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  • Ejabberd clustering problem with amazon EC2 server

    - by user353362
    Hello Guys! I have been trying to install ejabberd server on Amazons EC2 instance. I am kinds a stuck at this step right now. I am following this guide: http://tdewolf.blogspot.com/2009/07/clustering-ejabberd-nodes-using-mnes... From the guide I have sucessfully completed the Set up First Node (on ejabberd1) part. But am stuck in part 4 of Set up Second Node (on ejabberd2) So all in all, I created the main node and am able to run the server on that node and access its admin console from then internet. In the second node I have installed ejabberd. But I am stuck at point 4 of setting up the node instruction presented in this blog (http://tdewolf.blogspot.com/2009/07/clustering-ejabberd-nodes-using-mnes...). I execute this command " erl -sname ejabberd@domU-12-31-39-0F-7D-14 -mnesia dir '"/var/lib/ejabberd/"' -mnesia extra_db_nodes "['ejabberd@domU-12-31-39-02-C8-36']" -s mnesia " on the second server and get a crashing error: root@domU-12-31-39-0F-7D-14:/var/lib/ejabberd# erl -sname ejabberd@domU-12-31-39-0F-7D-14 -mnesia dir '"/var/lib/ejabberd/"' -mnesia extra_db_nodes "['ejabberd@domU-12-31-39-02-C8-36']" -s mnesia {error_logger,{{2010,5,28},{23,52,25}},"Protocol: ~p: register error: ~p~n",["inet_tcp",{{badmatch,{error,duplicate_name}},[{inet_tcp_dist,listen,1},{net_kernel,start_protos,4},{net_kernel,start_protos,3},{net_kernel,init_node,2},{net_kernel,init,1},{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}]} {error_logger,{{2010,5,28},{23,52,25}},crash_report,[[{pid,<0.21.0},{registered_name,net_kernel},{error_info,{exit,{error,badarg},[{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}},{initial_call,{net_kernel,init,['Argument__1']}},{ancestors,[net_sup,kernel_sup,<0.8.0]},{messages,[]},{links,[#Port<0.52,<0.18.0]},{dictionary,[{longnames,false}]},{trap_exit,true},{status,running},{heap_size,610},{stack_size,23},{reductions,518}],[]]} {error_logger,{{2010,5,28},{23,52,25}},supervisor_report,[{supervisor,{local,net_sup}},{errorContext,start_error},{reason,{'EXIT',nodistribution}},{offender,[{pid,undefined},{name,net_kernel},{mfa,{net_kernel,start_link,[['ejabberd@domU-12-31-39-0F-7D-14',shortnames]]}},{restart_type,permanent},{shutdown,2000},{child_type,worker}]}]} {error_logger,{{2010,5,28},{23,52,25}},supervisor_report,[{supervisor,{local,kernel_sup}},{errorContext,start_error},{reason,shutdown},{offender,[{pid,undefined},{name,net_sup},{mfa,{erl_distribution,start_link,[]}},{restart_type,permanent},{shutdown,infinity},{child_type,supervisor}]}]} {error_logger,{{2010,5,28},{23,52,25}},crash_report,[[{pid,<0.7.0},{registered_name,[]},{error_info,{exit,{shutdown,{kernel,start,[normal,[]]}},[{application_master,init,4},{proc_lib,init_p_do_apply,3}]}},{initial_call,{application_master,init,['Argument_1','Argument_2','Argument_3','Argument_4']}},{ancestors,[<0.6.0]},{messages,[{'EXIT',<0.8.0,normal}]},{links,[<0.6.0,<0.5.0]},{dictionary,[]},{trap_exit,true},{status,running},{heap_size,233},{stack_size,23},{reductions,123}],[]]} {error_logger,{{2010,5,28},{23,52,25}},std_info,[{application,kernel},{exited,{shutdown,{kernel,start,[normal,[]]}}},{type,permanent}]} {"Kernel pid terminated",application_controller,"{application_start_failure,kernel,{shutdown,{kernel,start,[normal,[]]}}}"} Crash dump was written to: erl_crash.dump Kernel pid terminated (application_controller) ({application_start_failure,kernel,{shutdown,{kernel,start,[normal,[]]}}}) root@domU-12-31-39-0F-7D-14:/var/lib/ejabberd# any idea what going on? I am not really sure how to solve this problem :S how to let ejabberd only access register from one special server? › Is that the right way of copying .erlang.cookie file? Submitted by privateson on Sat, 2010-05-29 00:11. before this I was getting this error (see below), I solved it by running this command: chmod 400 .erlang.cookie Also to copy the cookie I simply created a file using vi on the second server and copied the secret code from server one to the second server. Is that the right way of copying .erlang.cookie file? ERROR ~~~~~~~~~~ root@domU-12-31-39-0F-7D-14:/etc/ejabberd# erl -sname ejabberd@domU-12-31-39-0F-7D-14 -mnesia dir '"/var/lib/ejabberd/"' -mnesia extra_db_nodes "['ejabberd@domU-12-31-39-02-C8-36']" -s mnesia {error_logger,{{2010,5,28},{23,28,56}},"Cookie file /root/.erlang.cookie must be accessible by owner only",[]} {error_logger,{{2010,5,28},{23,28,56}},crash_report,[[{pid,<0.20.0},{registered_name,auth},{error_info,{exit,{"Cookie file /root/.erlang.cookie must be accessible by owner only",[{auth,init_cookie,0},{auth,init,1},{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]},[{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}},{initial_call,{auth,init,['Argument__1']}},{ancestors,[net_sup,kernel_sup,<0.8.0]},{messages,[]},{links,[<0.18.0]},{dictionary,[]},{trap_exit,true},{status,running},{heap_size,987},{stack_size,23},{reductions,439}],[]]} {error_logger,{{2010,5,28},{23,28,56}},supervisor_report,[{supervisor,{local,net_sup}},{errorContext,start_error},{reason,{"Cookie file /root/.erlang.cookie must be accessible by owner only",[{auth,init_cookie,0},{auth,init,1},{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}},{offender,[{pid,undefined},{name,auth},{mfa,{auth,start_link,[]}},{restart_type,permanent},{shutdown,2000},{child_type,worker}]}]} {error_logger,{{2010,5,28},{23,28,56}},supervisor_report,[{supervisor,{local,kernel_sup}},{errorContext,start_error},{reason,shutdown},{offender,[{pid,undefined},{name,net_sup},{mfa,{erl_distribution,start_link,[]}},{restart_type,permanent},{shutdown,infinity},{child_type,supervisor}]}]} {error_logger,{{2010,5,28},{23,28,56}},crash_report,[[{pid,<0.7.0},{registered_name,[]},{error_info,{exit,{shutdown,{kernel,start,[normal,[]]}},[{application_master,init,4},{proc_lib,init_p_do_apply,3}]}},{initial_call,{application_master,init,['Argument_1','Argument_2','Argument_3','Argument_4']}},{ancestors,[<0.6.0]},{messages,[{'EXIT',<0.8.0,normal}]},{links,[<0.6.0,<0.5.0]},{dictionary,[]},{trap_exit,true},{status,running},{heap_size,233},{stack_size,23},{reductions,123}],[]]} {error_logger,{{2010,5,28},{23,28,56}},std_info,[{application,kernel},{exited,{shutdown,{kernel,start,[normal,[]]}}},{type,permanent}]} {"Kernel pid terminated",application_controller,"{application_start_failure,kernel,{shutdown,{kernel,start,[normal,[]]}}}"} Crash dump was written to: erl_crash.dump Kernel pid terminated (application_controller) ({application_start_failure,kernel,{shutdown,{kernel,start,[normal,[]]}}}) root@domU-12-31-39-0F-7D-14:/var/lib/ejabberd# cat /var/log/ejabberd/ejabberd.log =INFO REPORT==== 2010-05-28 22:48:53 === I(<0.321.0:mod_pubsub:154) : pubsub init "localhost" [{access_createnode, pubsub_createnode}, {plugins, ["default","pep"]}] =INFO REPORT==== 2010-05-28 22:48:53 === I(<0.321.0:mod_pubsub:210) : ** tree plugin is nodetree_default =INFO REPORT==== 2010-05-28 22:48:53 === I(<0.321.0:mod_pubsub:214) : ** init default plugin =INFO REPORT==== 2010-05-28 22:48:53 === I(<0.321.0:mod_pubsub:214) : ** init pep plugin =ERROR REPORT==== 2010-05-28 23:40:08 === ** Connection attempt from disallowed node 'ejabberdctl1275090008486951000@domU-12-31-39-0F-7D-14' ** =ERROR REPORT==== 2010-05-28 23:41:10 === ** Connection attempt from disallowed node 'ejabberdctl1275090070163253000@domU-12-31-39-0F-7D-14' **

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  • JQuery Hover li Show div which sits outside li structure

    - by Dave_Stott
    Hi everyone I'm currently trying to create a "mega" dropout menu using JQuery but have encountered an issue I'm yet to be able to resolve. At the moment I have the following HTML structure: <div id="TopNav" class="grid_16"> <ul class="cmsListMenuUL level0" id="TopNavMenu"> <li class="cmsListMenuLIcmsListMenuLI highlightedLI" id="TopNavMenu_Home"><a href="/"> <span class="text">Home</span></a></li> <li class="cmsListMenuLIfirst" id="TopNavMenu_0_1"><a href="/Key-Sectors.aspx" class="cmsListMenuLink"> <span class="text">Key Sectors</span></a></li> <li class="cmsListMenuLI" id="TopNavMenu_0_2"><a href="/Global-Brands.aspx" class="cmsListMenuLink"> <span class="text">Global Brands</span></a></li> <li class="cmsListMenuLI" id="TopNavMenu_0_3"><a href="/News---Features.aspx" class="cmsListMenuLink"> <span class="text">News &amp; Features</span></a></li> <li class="cmsListMenuLI" id="TopNavMenu_0_4"><a href="/Videos.aspx" class="cmsListMenuLink"> <span class="text">Videos</span></a></li> <li class="cmsListMenuLI" id="TopNavMenu_0_5"><a href="/Events.aspx" class="cmsListMenuLink"> <span class="text">Events</span></a></li> <li class="cmsListMenuLI" id="TopNavMenu_0_6"><a href="/Key-Cities.aspx" class="cmsListMenuLink"> <span class="text">Key Cities</span></a></li> <li class="cmsListMenuLI" id="TopNavMenu_0_7"><a href="/Doing-Business-in-Yorkshire.aspx" class="cmsListMenuLink"><span class="text">Doing Business in Yorkshire</span></a></li> <li class="cmsListMenuLI" id="TopNavMenu_0_8"><a href="/How-We-Can-Help.aspx" class="cmsListMenuLink"> <span class="text">How We Can Help</span></a></li> <li class="cmsListMenuLI" id="TopNavMenu_0_9"><a href="/Contact-Us.aspx" class="cmsListMenuLink"> <span class="text">Contact Us</span></a></li> </ul> </div> <div class="sectorsDropped"> <div class="floatLeft leftColumn"> <div class="parentItem" style="border-color: #0064BE;"> <a href="/Key-Sectors/Advanced-Engineering---Materials.aspx" class="parentItemContent"> Advanced Engineering &amp; Materials</a><div class="childItem"> <a href="/Key-Sectors/Advanced-Engineering---Materials/Nuclear.aspx">- Nuclear</a></div> <div class="childItem"> <a href="/Key-Sectors/Advanced-Engineering---Materials/Logistics---Infrastructure.aspx"> - Logistics &amp; Infrastructure</a></div> </div> <div class="parentItem" style="border-color: #FFB611;"> <a href="/Key-Sectors/Chemicals.aspx" class="parentItemContent">Chemicals</a></div> <div class="parentItem" style="border-color: #B7CC0B;"> <a href="/Key-Sectors/Environmental-Technologies.aspx" class="parentItemContent">Environmental Technologies</a><div class="childItem"> <a href="/Key-Sectors/Environmental-Technologies/Offshore-Wind.aspx">- Offshore Wind</a></div> <div class="childItem"> <a href="/Key-Sectors/Environmental-Technologies/Carbon-Capture---Storage.aspx">- Carbon Capture &amp; Storage</a></div> <div class="childItem"> <a href="/Key-Sectors/Environmental-Technologies/Tidal-Power.aspx">- Tidal Power</a></div> <div class="childItem"> <a href="/Key-Sectors/Environmental-Technologies/Biomass.aspx">- Biomass</a></div> </div> </div> <div class="floatLeft rightColumn"> <div class="parentItem" style="border-color: #AC26AA;"> <a href="/Key-Sectors/Digital---New-Media.aspx" class="parentItemContent">Digital &amp; New Media</a></div> <div class="parentItem" style="border-color: #e1477e;"> <a href="/Key-Sectors/Food---Drink.aspx" class="parentItemContent">Food &amp; Drink</a></div> <div class="parentItem" style="border-color: #00c5b5;"> <a href="/Key-Sectors/Healthcare-Technologies.aspx" class="parentItemContent">Healthcare Technologies</a><div class="childItem"> <a href="/Key-Sectors/Healthcare-Technologies/Biotechnology.aspx">- Biotechnology</a></div> <div class="childItem"> <a href="/Key-Sectors/Healthcare-Technologies/Pharmaceuticals.aspx">- Pharmaceuticals</a></div> <div class="childItem"> <a href="/Key-Sectors/Healthcare-Technologies/Medical-Devices.aspx">- Medical Devices</a></div> </div> <div class="parentItem" style="border-color: #AC1A2F;"> <a href="/Key-Sectors/Financial---Professional.aspx" class="parentItemContent">Financial &amp; Professional</a></div> </div> </div> In normal circumstances the div containing the "mega" menu options would sit inside the li item that fires the show/hide but this is currently not possible as the ul list of navigation links is rendered using a 3rd party piece of software which does not provide an equivalent of an OnItemDataBound event for me to be able to inject the div into the item Does anyone know of a way, using JQuery, of showing the div but maintain the display of the div as the mouse focus leaves the li that originaly displayed the div and actually enters the div? I'm currently using the following JQuery which displays the div correctly but as the mouse focus enters the div the div then disappears as the mouse focus from the li has now moved: $(document).ready(function() { function addMega(){ $(".sectorsDropped").toggle("fast"); } function removeMega(){ $(".sectorsDropped").toggle("fast"); } var megaConfig = { interval: 500, sensitivity: 4, over: addMega, timeout: 500, out: removeMega }; $("#TopNavMenu_0_1").hoverIntent(megaConfig) }); Thanks Dave

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  • Intermittent Internet Explorer Error whilst using Javascript to traverse XML Nodes

    - by Sykth
    Hi there all, Basically I use a javascript SOAP plugin to send and receive XML from a web service. Recently I've been experiencing intermittment (1 in every 20-30 times) errors in IE when trying to access data in the XML file. Bear with me on this, I'm going to try and go into a fair amount of detail to help anyone who is willing to read this: I have a html file, with an external javascript file attached. In the javascript file I include 5 global variables: var soapRes; var questionXML; var xRoot; var assessnode; var edStage = 0; Once the html file is at a readystate I request the XML file from the web service like this: function initNextStage(strA) { // Set pl Parameters here var pl = new SOAPClientParameters(); // soap call var r = SOAPClient.invoke(url, "LoadAssessment", pl, true, initStage_callBack); } function initStage_callBack(r, soapResponse) { soapRes = soapResponse; initvalues(); function initvalues(){ xRoot = soapRes.documentElement; assessnode = xRoot.getElementsByTagName("ed")[0]; questionXML = assessnode.getElementsByTagName("question")[edStage]; } } Once this is completed the XML should be loaded into memory via the global variable soapRes. I then save values to the XML before moving one node down the XML tree, and pulling the next set of values out of it. function submitAns1() { var objAns; var corElem; var corElemTxt; questionXML = assessnode.getElementsByTagName("question")[edStage]; objAns = questionXML.getElementsByTagName("item")[0].getAttribute("answer"); corElem = soapRes.createElement("correct"); corElemTxt = soapRes.createTextNode("value"); questionXML.appendChild(corElem); corElem.appendChild(corElemTxt); if(objAns == "t") { corElemTxt.nodeValue = "true"; } else { corElemTxt.nodeValue = "false"; } edStage++; questionXML = assessnode.getElementsByTagName("question")[edStage]; var inc1 = questionXML.getElementsByTagName("sentence")[0]; var inc2 = questionXML.getElementsByTagName("sentence")[1]; var edopt1 = questionXML.getElementsByTagName("item")[0]; var edopt2 = questionXML.getElementsByTagName("item")[1]; var edopt3 = questionXML.getElementsByTagName("item")[2]; var edopt4 = questionXML.getElementsByTagName("item")[3]; var edopt5 = questionXML.getElementsByTagName("item")[4]; var temp1 = edopt1.childNodes[0].nodeValue; var temp2 = edopt2.childNodes[0].nodeValue; var temp3 = edopt3.childNodes[0].nodeValue; var temp4 = edopt4.childNodes[0].nodeValue; var temp5 = edopt5.childNodes[0].nodeValue; } This is an example of our XML: <ed> <appid>Administrator</appid> <formid>ED009</formid> <question id="1"> <sentence id="1">[email protected]</sentence> <sentence id="2">[email protected]</sentence> <item id="0" answer="f" value="0">0</item> <item id="1" answer="f" value="1">1</item> <item id="2" answer="f" value="2">2</item> <item id="3" answer="t" value="3">3</item> <item id="4" answer="f" value="4">4</item> </question> <question id="2"> <sentence id="1">Beausdene 13</sentence> <sentence id="2">Beauscene 83</sentence> <item id="0" answer="f" value="0">0</item> <item id="1" answer="f" value="1">1</item> <item id="2" answer="t" value="2">2</item> <item id="3" answer="f" value="3">3</item> <item id="4" answer="f" value="4">4</item> </question> </ed> The error I receive intermittently is that "questionXML" is null or not an object. Specifically this line when I call on the submitAns1() method: questionXML = assessnode.getElementsByTagName("question")[edStage]; This solution works on FF, Opera, Chrome & Safari without any issues as far as I am aware. Am I accessing the XML nodes incorrectly? I've been toying with fixes for this bug for weeks now, I'd really appreciate any insight into what I'm doing wrong. On a side note, this is a personal project of mine - it's not university related - I'm much too old for that! Any help greatly appreciated. Regards, Sykth.

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  • UITableview has problem reloading

    - by seelani
    Hi guys, I've kinda finished my application for a school project but have run into a major "bug". It's a account management application. I'm unable to insert a picture here so here's a link: http://i232.photobucket.com/albums/ee112/seelani/Screenshot2010-12-22atPM075512.png Here's the problem when i click on the plus sign, i push a nav controller to load another view to handle the adding and deleting of categories. When i add and return back to the view above, it doesn't update. It only updates after i hit the button on the right which is another view used to change some settings, and return back to the page. I did some research on viewWillAppear and such but I'm still confused to why it doesn't work properly. This problem is also affecting my program when i delete a category, and return back to this view it crashes cos the view has not reloaded successfully. I will get this error when deleting and returning to the view. "* Terminating app due to uncaught exception 'NSRangeException', reason: '* -[NSMutableArray objectAtIndex:]: index 4 beyond bounds [0 .. 3]'". [EDIT] Table View Code: @class LoginViewController; @implementation CategoryTableViewController @synthesize categoryTableViewController; @synthesize categoryArray; @synthesize accountsTableViewController; @synthesize editAccountTable; @synthesize window; CategoryMgmtTableController *categoryMgmtTableController; ChangePasswordView *changePasswordView; - (void) save_Clicked:(id)sender { /* UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Category Management" message:@"Load category management table view" delegate:self cancelButtonTitle: @"OK" otherButtonTitles:nil]; [alert show]; [alert release]; */ KeyCryptAppAppDelegate *appDelegate = (KeyCryptAppAppDelegate *)[[UIApplication sharedApplication] delegate]; categoryMgmtTableController = [[CategoryMgmtTableController alloc]initWithNibName:@"CategoryMgmtTable" bundle:nil]; [appDelegate.categoryNavController pushViewController:categoryMgmtTableController animated:YES]; } - (void) change_Clicked:(id)sender { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Change Password" message:@"Change password View" delegate:self cancelButtonTitle: @"OK" otherButtonTitles:nil]; [alert show]; [alert release]; KeyCryptAppAppDelegate *appDelegate = (KeyCryptAppAppDelegate *)[[UIApplication sharedApplication] delegate]; changePasswordView = [[ChangePasswordView alloc]initWithNibName:@"ChangePasswordView" bundle:nil]; [appDelegate.categoryNavController pushViewController:changePasswordView animated:YES]; /* KeyCryptAppAppDelegate *appDelegate = (KeyCryptAppAppDelegate *)[[UIApplication sharedApplication] delegate]; categoryMgmtTableController = [[CategoryMgmtTableController alloc]initWithNibName:@"CategoryMgmtTable" bundle:nil]; [appDelegate.categoryNavController pushViewController:categoryMgmtTableController animated:YES]; */ } #pragma mark - #pragma mark Initialization /* - (id)initWithStyle:(UITableViewStyle)style { // Override initWithStyle: if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad. if ((self = [super initWithStyle:style])) { } return self; } */ -(void) initializeCategoryArray { sqlite3 *db= [KeyCryptAppAppDelegate getNewDBConnection]; KeyCryptAppAppDelegate *appDelegate = (KeyCryptAppAppDelegate *)[[UIApplication sharedApplication] delegate]; const char *sql = [[NSString stringWithFormat:(@"Select Category from Categories;")]cString]; const char *cmd = [[NSString stringWithFormat:@"pragma key = '%@' ", appDelegate.pragmaKey]cString]; sqlite3_stmt *compiledStatement; sqlite3_exec(db, cmd, NULL, NULL, NULL); if (sqlite3_prepare_v2(db, sql, -1, &compiledStatement, NULL)==SQLITE_OK) { while(sqlite3_step(compiledStatement) == SQLITE_ROW) [categoryArray addObject:[NSString stringWithUTF8String:(char*) sqlite3_column_text(compiledStatement, 0)]]; } else { NSAssert1(0,@"Error preparing statement", sqlite3_errmsg(db)); } sqlite3_finalize(compiledStatement); } #pragma mark - #pragma mark View lifecycle - (void)viewDidLoad { // Uncomment the following line to display an Edit button in the navigation bar for this view controller. // self.navigationItem.rightBarButtonItem = self.editButtonItem; [super viewDidLoad]; } - (void)viewWillAppear:(BOOL)animated { self.title = NSLocalizedString(@"Categories",@"Types of Categories"); categoryArray = [[NSMutableArray alloc]init]; [self initializeCategoryArray]; self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(save_Clicked:)] autorelease]; self.navigationItem.leftBarButtonItem = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(change_Clicked:)] autorelease]; [super viewWillAppear:animated]; } - (void)viewDidAppear:(BOOL)animated { NSLog (@"view did appear"); [super viewDidAppear:animated]; } - (void)viewWillDisappear:(BOOL)animated { NSLog (@"view will disappear"); [super viewWillDisappear:animated]; } - (void)viewDidDisappear:(BOOL)animated { [categoryTableView reloadData]; NSLog (@"view did disappear"); [super viewDidDisappear:animated]; } /* // Override to allow orientations other than the default portrait orientation. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation == UIInterfaceOrientationPortrait); } */ #pragma mark - #pragma mark Table view data source - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { // Return the number of sections. return 1; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { // Return the number of rows in the section. return [self.categoryArray count]; } // Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } // Configure the cell... NSUInteger row = [indexPath row]; cell.text = [categoryArray objectAtIndex:row]; cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; return cell; } /* // Override to support conditional editing of the table view. - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath { // Return NO if you do not want the specified item to be editable. return YES; } */ /* // Override to support editing the table view. - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if (editingStyle == UITableViewCellEditingStyleDelete) { // Delete the row from the data source [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES]; } else if (editingStyle == UITableViewCellEditingStyleInsert) { // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view } } */ /* // Override to support rearranging the table view. - (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath { } */ /* // Override to support conditional rearranging of the table view. - (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath { // Return NO if you do not want the item to be re-orderable. return YES; } */ #pragma mark - #pragma mark Table view delegate - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { NSString *selectedCategory = [categoryArray objectAtIndex:[indexPath row]]; NSLog (@"AccountsTableView.xib is called."); if ([categoryArray containsObject: selectedCategory]) { if (self.accountsTableViewController == nil) { AccountsTableViewController *aAccountsView = [[AccountsTableViewController alloc]initWithNibName:@"AccountsTableView"bundle:nil]; self.accountsTableViewController =aAccountsView; [aAccountsView release]; } NSInteger row =[indexPath row]; accountsTableViewController.title = [NSString stringWithFormat:@"%@", [categoryArray objectAtIndex:row]]; // This portion pushes the categoryNavController. KeyCryptAppAppDelegate *delegate = [[UIApplication sharedApplication] delegate]; [self.accountsTableViewController initWithTextSelected:selectedCategory]; KeyCryptAppAppDelegate *appDelegate = (KeyCryptAppAppDelegate *)[[UIApplication sharedApplication] delegate]; appDelegate.pickedCategory = selectedCategory; [delegate.categoryNavController pushViewController:accountsTableViewController animated:YES]; } } #pragma mark - #pragma mark Memory management - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Relinquish ownership any cached data, images, etc that aren't in use. } - (void)viewDidUnload { // Relinquish ownership of anything that can be recreated in viewDidLoad or on demand. // For example: self.myOutlet = nil; } - (void)dealloc { [accountsTableViewController release]; [super dealloc]; } @end And the code that i used to delete rows(this is in a totally different tableview): - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if (editingStyle == UITableViewCellEditingStyleDelete) { // Delete the row from the data source NSString *selectedCategory = [categoryArray objectAtIndex:indexPath.row]; [categoryArray removeObjectAtIndex:indexPath.row]; [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES]; [deleteCategoryTable reloadData]; //NSString *selectedCategory = [categoryArray objectAtIndex:indexPath.row]; sqlite3 *db= [KeyCryptAppAppDelegate getNewDBConnection]; KeyCryptAppAppDelegate *appDelegate = (KeyCryptAppAppDelegate *)[[UIApplication sharedApplication] delegate]; const char *sql = [[NSString stringWithFormat:@"Delete from Categories where Category = '%@';", selectedCategory]cString]; const char *cmd = [[NSString stringWithFormat:@"pragma key = '%@' ", appDelegate.pragmaKey]cString]; sqlite3_stmt *compiledStatement; sqlite3_exec(db, cmd, NULL, NULL, NULL); if (sqlite3_prepare_v2(db, sql, -1, &compiledStatement, NULL)==SQLITE_OK) { sqlite3_exec(db,sql,NULL,NULL,NULL); } else { NSAssert1(0,@"Error preparing statement", sqlite3_errmsg(db)); } sqlite3_finalize(compiledStatement); } else if (editingStyle == UITableViewCellEditingStyleInsert) { // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view } }

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  • C#: Inheritance, Overriding, and Hiding

    - by Rosarch
    I'm having difficulty with an architectural decision for my C# XNA game. The basic entity in the world, such as a tree, zombie, or the player, is represented as a GameObject. Each GameObject is composed of at least a GameObjectController, GameObjectModel, and GameObjectView. These three are enough for simple entities, like inanimate trees or rocks. However, as I try to keep the functionality as factored out as possible, the inheritance begins to feel unwieldy. Syntactically, I'm not even sure how best to accomplish my goals. Here is the GameObjectController: public class GameObjectController { protected GameObjectModel model; protected GameObjectView view; public GameObjectController(GameObjectManager gameObjectManager) { this.gameObjectManager = gameObjectManager; model = new GameObjectModel(this); view = new GameObjectView(this); } public GameObjectManager GameObjectManager { get { return gameObjectManager; } } public virtual GameObjectView View { get { return view; } } public virtual GameObjectModel Model { get { return model; } } public virtual void Update(long tick) { } } I want to specify that each subclass of GameObjectController will have accessible at least a GameObjectView and GameObjectModel. If subclasses are fine using those classes, but perhaps are overriding for a more sophisticated Update() method, I don't want them to have to duplicate the code to produce those dependencies. So, the GameObjectController constructor sets those objects up. However, some objects do want to override the model and view. This is where the trouble comes in. Some objects need to fight, so they are CombatantGameObjects: public class CombatantGameObject : GameObjectController { protected new readonly CombatantGameModel model; public new virtual CombatantGameModel Model { get { return model; } } protected readonly CombatEngine combatEngine; public CombatantGameObject(GameObjectManager gameObjectManager, CombatEngine combatEngine) : base(gameObjectManager) { model = new CombatantGameModel(this); this.combatEngine = combatEngine; } public override void Update(long tick) { if (model.Health <= 0) { gameObjectManager.RemoveFromWorld(this); } base.Update(tick); } } Still pretty simple. Is my use of new to hide instance variables correct? Note that I'm assigning CombatantObjectController.model here, even though GameObjectController.Model was already set. And, combatants don't need any special view functionality, so they leave GameObjectController.View alone. Then I get down to the PlayerController, at which a bug is found. public class PlayerController : CombatantGameObject { private readonly IInputReader inputReader; private new readonly PlayerModel model; public new PlayerModel Model { get { return model; } } private float lastInventoryIndexAt; private float lastThrowAt; public PlayerController(GameObjectManager gameObjectManager, IInputReader inputReader, CombatEngine combatEngine) : base(gameObjectManager, combatEngine) { this.inputReader = inputReader; model = new PlayerModel(this); Model.Health = Constants.PLAYER_HEALTH; } public override void Update(long tick) { if (Model.Health <= 0) { gameObjectManager.RemoveFromWorld(this); for (int i = 0; i < 10; i++) { Debug.WriteLine("YOU DEAD SON!!!"); } return; } UpdateFromInput(tick); // .... } } The first time that this line is executed, I get a null reference exception: model.Body.ApplyImpulse(movementImpulse, model.Position); model.Position looks at model.Body, which is null. This is a function that initializes GameObjects before they are deployed into the world: public void Initialize(GameObjectController controller, IDictionary<string, string> data, WorldState worldState) { controller.View.read(data); controller.View.createSpriteAnimations(data, _assets); controller.Model.read(data); SetUpPhysics(controller, worldState, controller.Model.BoundingCircleRadius, Single.Parse(data["x"]), Single.Parse(data["y"]), bool.Parse(data["isBullet"])); } Every object is passed as a GameObjectController. Does that mean that if the object is really a PlayerController, controller.Model will refer to the base's GameObjectModel and not the PlayerController's overriden PlayerObjectModel? In response to rh: This means that now for a PlayerModel p, p.Model is not equivalent to ((CombatantGameObject)p).Model, and also not equivalent to ((GameObjectController)p).Model. That is exactly what I do not want. I want: PlayerController p; p.Model == ((CombatantGameObject)p).Model p.Model == ((GameObjectController)p).Model How can I do this? override?

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  • Very simple, terse and easy GUI programming “frameworks”

    - by jetxee
    Please list GUI programming libraries, toolkits, frameworks which allow to write GUI apps quickly. I mean in such a way, that GUI is described entirely in a human-readable (and human-writable) plain text file (code) code is terse (1 or 2 lines of code per widget/event pair), suitable for scripting structure and operation of the GUI is evident from the code (nesting of widgets and flow of events) details about how to build the GUI are hidden (things like mainloop, attaching event listeners, etc.) auto-layouts are supported (vboxes, hboxes, etc.) As answers suggest, this may be defined as declarative GUI programming, but it is not necessarily such. Any approach is OK if it works, is easy to use and terse. There are some GUI libraries/toolkits like this. They are listed below. Please extend the list if you see a qualifying toolkit missing. Indicate if the project is crossplatform, mature, active, and give an example if possible. Please use this wiki to discuss only Open Source projects. This is the list so far (in alphabetical order): Fudgets Fudgets is a Haskell library. Platform: Unix. Status: Experimental, but still maintained. An example: import Fudgets main = fudlogue (shellF "Hello" (labelF "Hello, world!" >+< quitButtonF)) GNUstep Renaissance Renaissance allows to describe GUI in simple XML. Platforms: OSX/GNUstep. Status: part of GNUstep. An example below: <window title="Example"> <vbox> <label font="big"> Click the button below to quit the application </label> <button title="Quit" action="terminate:"/> </vbox> </window> HTML HTML-based GUI (HTML + JS). Crossplatform, mature. Can be used entirely on the client side. Looking for a nice “helloworld” example. JavaFX JavaFX is usable for standalone (desktop) apps as well as for web applications. Not completely crossplatform, not yet completely open source. Status: 1.0 release. An example: Frame { content: Button { text: "Press Me" action: operation() { System.out.println("You pressed me"); } } visible: true } Screenshot is needed. Phooey Phooey is another Haskell library. Crossplatform (wxWidgets), HTML+JS backend planned. Mature and active. An example (a little more than a helloworld): ui1 :: UI () ui1 = title "Shopping List" $ do a <- title "apples" $ islider (0,10) 3 b <- title "bananas" $ islider (0,10) 7 title "total" $ showDisplay (liftA2 (+) a b) PythonCard PythonCard describes GUI in a Python dictionary. Crossplatform (wxWidgets). Some apps use it, but the project seems stalled. There is an active fork. I skip PythonCard example because it is too verbose for the contest. Shoes Shoes for Ruby. Platforms: Win/OSX/GTK+. Status: Young but active. A minimal app looks like this: Shoes.app { @push = button "Push me" @note = para "Nothing pushed so far" @push.click { @note.replace "Aha! Click!" } } Tcl/Tk Tcl/Tk. Crossplatform (its own widget set). Mature (probably even dated) and active. An example: #!/usr/bin/env wish button .hello -text "Hello, World!" -command { exit } pack .hello tkwait window . tekUI tekUI for Lua (and C). Platforms: X11, DirectFB. Status: Alpha (usable, but API still evolves). An example: #/usr/bin/env lua ui = require "tek.ui" ui.Application:new { Children = { ui.Window:new { Title = "Hello", Children = { ui.Text:new { Text = "_Hello, World!", Style = "button", Mode = "button", }, }, }, }, }:run() Treethon Treethon for Python. It describes GUI in a YAML file (Python in a YAML tree). Platform: GTK+. Status: work in proress. A simple app looks like this: _import: gtk view: gtk.Window() add: - view: gtk.Button('Hello World') on clicked: print view.get_label() Yet unnamed Python library by Richard Jones: This one is not released yet. The idea is to use Python context managers (with keyword) to structure GUI code. See Richard Jones' blog for details. with gui.vertical: text = gui.label('hello!') items = gui.selection(['one', 'two', 'three']) with gui.button('click me!'): def on_click(): text.value = items.value text.foreground = red XUL XUL + Javascript may be used to create stand-alone desktop apps with XULRunner as well as Mozilla extensions. Mature, open source, crossplatform. <?xml version="1.0"?> <?xml-stylesheet href="chrome://global/skin/" type="text/css"?> <window id="main" title="My App" width="300" height="300" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> <caption label="Hello World"/> </window> Thank your for contributions!

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  • Setting an XAML Window always on top (but no TopMost property)

    - by Brian Scherady
    I am developing an application based on OptiTrack SDK (from NaturalPoint). I need to run the application window as "Always on Top". The window is designed in XAML and is controled in the class "CameraView" but it does not seem to include a "TopMost" property or equivalent. Attached are the code of "CameraView.xaml.cs" and the code of "CameraView.xaml" that are part of OptiTrack SDK (NaturalPoint) called "Single_Camera_CSharp_.NET_3.0". One could expect the class CameraView to contain properties or members to set the position of the window on the screen or to set it to TopMost but as far as searched I found nothing. I wonder what I should do. Thank you, Brian ================ "CameraView.xaml.cs" using System; using System.IO; using System.Net; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Navigation; using System.Drawing.Imaging; using System.Drawing.Drawing2D; using System.Windows.Threading; namespace TestProject { public partial class CameraView { private const int NP_OPTION_OBJECT_COLOR_OPTION = 3; private const int NP_OPTION_VIDEO_TYPE = 48; private const int NP_OPTION_NUMERIC_DISPLAY_ON = 71; private const int NP_OPTION_NUMERIC_DISPLAY_OFF = 72; private const int NP_OPTION_FETCH_RLE = 73; private const int NP_OPTION_FETCH_GRAYSCALE = 74; private const int NP_OPTION_FRAME_DECIMATION = 52; private const int NP_OPTION_INTENSITY = 50; private const int NP_OPTION_SEND_EMPTY_FRAMES = 41; private const int NP_OPTION_THRESHOLD = 5; private const int NP_OPTION_EXPOSURE = 46; private const int NP_OPTION_SEND_FRAME_MASK = 73; private const int NP_OPTION_TEXT_OVERLAY_OPTION = 74; // public delegate void OnCameraViewCreate(CameraView camera); // public static OnCameraViewCreate onCameraViewCreate; private System.Drawing.Bitmap raw = new System.Drawing.Bitmap(353, 288, System.Drawing.Imaging.PixelFormat.Format32bppArgb); private int mFrameCounter; private int mDisplayCounter; private DispatcherTimer timer1 = new DispatcherTimer(); private bool mVideoFrameAvailable = false; private int mNumeric = -1; private bool mGreyscale = false; private bool mOverlay = true; public CameraView() { this.InitializeComponent(); timer1.Interval = new TimeSpan(0, 0, 0, 0, 10); timer1.Tick += new EventHandler(timer1_Tick); } public int Numeric { get { return mNumeric; } set { mNumeric = value % 100; if (mNumeric = 0) { if (Camera != null) Camera.SetOption(NP_OPTION_NUMERIC_DISPLAY_ON, value % 100); } } } private bool CameraRunning = false; private OptiTrack.NPCamera mCamera; public OptiTrack.NPCamera Camera { get { return mCamera; } set { if (mCamera == value) return; //== Don't do anything if you're assigning the same camera == if (mCamera != null) { //== Shut the selected camera down ==<< if (CameraRunning) { CameraRunning = false; mCamera.Stop(); mCamera.FrameAvailable -= FrameAvailable; } } mCamera = value; if (mCamera == null) { mNumeric = -1; } else { serialLabel.Content = "Camera "+mCamera.SerialNumber.ToString(); //mNumeric.ToString(); } } } private void FrameAvailable(OptiTrack.NPCamera Camera) { mFrameCounter++; try { OptiTrack.NPCameraFrame frame = Camera.GetFrame(0); int id = frame.Id; if (CameraRunning) { GetFrameData(Camera, frame); } frame.Free(); } catch (Exception) { int r = 0; r++; } } private void GetFrameData(OptiTrack.NPCamera camera, OptiTrack.NPCameraFrame frame) { BitmapData bmData = raw.LockBits(new System.Drawing.Rectangle(0, 0, raw.Width, raw.Height), ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format32bppArgb); int stride = bmData.Stride; System.IntPtr bufferPtr = bmData.Scan0; unsafe { byte* buffer = (byte*)(void*)bufferPtr; camera.GetFrameImage(frame, bmData.Width, bmData.Height, bmData.Stride, 32, ref buffer[0]); } raw.UnlockBits(bmData); mVideoFrameAvailable = true; } private void timer1_Tick(object sender, EventArgs e) { if (CameraRunning && mVideoFrameAvailable) { mVideoFrameAvailable = false; cameraImage.Source = Img(raw); mDisplayCounter++; } } private System.Windows.Media.ImageSource Img(System.Drawing.Bitmap img) { System.Drawing.Imaging.BitmapData bmData = img.LockBits(new System.Drawing.Rectangle(0, 0, img.Width, img.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format32bppPArgb); System.Windows.Media.Imaging.BitmapSource bitmap = System.Windows.Media.Imaging.BitmapSource.Create( img.Width, img.Height, 96, 96, PixelFormats.Bgra32, System.Windows.Media.Imaging.BitmapPalettes.WebPalette, bmData.Scan0, bmData.Stride * bmData.Height, bmData.Stride); img.UnlockBits(bmData); return bitmap; } private void startStopButton_Click(object sender, RoutedEventArgs e) { if (CameraRunning) StopCamera(); else StartCamera(); } public void StartCamera() { if (Camera != null) { mFrameCounter = 0; mDisplayCounter = 0; Camera.FrameAvailable += FrameAvailable; Camera.SetOption(NP_OPTION_VIDEO_TYPE, 0); Camera.SetOption(NP_OPTION_FRAME_DECIMATION, 1); Camera.SetOption(NP_OPTION_INTENSITY, 0); Camera.SetOption(NP_OPTION_EXPOSURE, 10); Camera.SetOption(NP_OPTION_THRESHOLD, 50); Camera.SetOption(NP_OPTION_OBJECT_COLOR_OPTION, 0); SetOverlayOption(); SetGreyscaleOption(); timer1.Start(); Camera.Start(); CameraRunning = true; this.Numeric = mNumeric; startStopButton.Content = "Stop Camera"; } } private void SetGreyscaleOption() { if(mGreyscale) Camera.SetOption(NP_OPTION_VIDEO_TYPE, 1); else Camera.SetOption(NP_OPTION_VIDEO_TYPE, 0); } private void SetOverlayOption() { if(mOverlay) Camera.SetOption(NP_OPTION_TEXT_OVERLAY_OPTION, 255); else Camera.SetOption(NP_OPTION_TEXT_OVERLAY_OPTION, 0); } public void StopCamera() { if (Camera != null) { Camera.Stop(); timer1.Stop(); CameraRunning = false; Camera.FrameAvailable -= FrameAvailable; Camera.SetOption(NP_OPTION_NUMERIC_DISPLAY_OFF, 0); startStopButton.Content = "Start Camera"; } } private void greyscaleButton_Click(object sender, RoutedEventArgs e) { if(mGreyscale) mGreyscale = false; else mGreyscale = true; SetGreyscaleOption(); } private void OverlayButton_Click(object sender, RoutedEventArgs e) { if(mOverlay) mOverlay = false; else mOverlay = true; SetOverlayOption(); } private void exposureSlider_ValueChanged(object sender, RoutedEventArgs e) { if (mCamera!=null) { mCamera.SetOption(NP_OPTION_EXPOSURE, (int) this.exposureSlider.Value); } } private void thresholdSlider_ValueChanged(object sender, RoutedEventArgs e) { if (mCamera != null) { mCamera.SetOption(NP_OPTION_THRESHOLD, (int)this.thresholdSlider.Value); } } private void optionsButton_Click(object sender, RoutedEventArgs e) { if (!propertyPanel.IsVisible) propertyPanel.Visibility = Visibility.Visible; else propertyPanel.Visibility = Visibility.Collapsed; } } } ================ "CameraView.xaml"

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  • Getting a NullPointerException at seemingly random intervals, not sure why

    - by Miles
    I'm running an example from a Kinect library for Processing (http://www.shiffman.net/2010/11/14/kinect-and-processing/) and sometimes get a NullPointerException pointing to this line: int rawDepth = depth[offset]; The depth array is created in this line: int[] depth = kinect.getRawDepth(); I'm not exactly sure what a NullPointerException is, and much googling hasn't really helped. It seems odd to me that the code compiles 70% of the time and returns the error unpredictably. Could the hardware itself be affecting it? Here's the whole example if it helps: // Daniel Shiffman // Kinect Point Cloud example // http://www.shiffman.net // https://github.com/shiffman/libfreenect/tree/master/wrappers/java/processing import org.openkinect.*; import org.openkinect.processing.*; // Kinect Library object Kinect kinect; float a = 0; // Size of kinect image int w = 640; int h = 480; // We'll use a lookup table so that we don't have to repeat the math over and over float[] depthLookUp = new float[2048]; void setup() { size(800,600,P3D); kinect = new Kinect(this); kinect.start(); kinect.enableDepth(true); // We don't need the grayscale image in this example // so this makes it more efficient kinect.processDepthImage(false); // Lookup table for all possible depth values (0 - 2047) for (int i = 0; i < depthLookUp.length; i++) { depthLookUp[i] = rawDepthToMeters(i); } } void draw() { background(0); fill(255); textMode(SCREEN); text("Kinect FR: " + (int)kinect.getDepthFPS() + "\nProcessing FR: " + (int)frameRate,10,16); // Get the raw depth as array of integers int[] depth = kinect.getRawDepth(); // We're just going to calculate and draw every 4th pixel (equivalent of 160x120) int skip = 4; // Translate and rotate translate(width/2,height/2,-50); rotateY(a); for(int x=0; x<w; x+=skip) { for(int y=0; y<h; y+=skip) { int offset = x+y*w; // Convert kinect data to world xyz coordinate int rawDepth = depth[offset]; PVector v = depthToWorld(x,y,rawDepth); stroke(255); pushMatrix(); // Scale up by 200 float factor = 200; translate(v.x*factor,v.y*factor,factor-v.z*factor); // Draw a point point(0,0); popMatrix(); } } // Rotate a += 0.015f; } // These functions come from: http://graphics.stanford.edu/~mdfisher/Kinect.html float rawDepthToMeters(int depthValue) { if (depthValue < 2047) { return (float)(1.0 / ((double)(depthValue) * -0.0030711016 + 3.3309495161)); } return 0.0f; } PVector depthToWorld(int x, int y, int depthValue) { final double fx_d = 1.0 / 5.9421434211923247e+02; final double fy_d = 1.0 / 5.9104053696870778e+02; final double cx_d = 3.3930780975300314e+02; final double cy_d = 2.4273913761751615e+02; PVector result = new PVector(); double depth = depthLookUp[depthValue];//rawDepthToMeters(depthValue); result.x = (float)((x - cx_d) * depth * fx_d); result.y = (float)((y - cy_d) * depth * fy_d); result.z = (float)(depth); return result; } void stop() { kinect.quit(); super.stop(); } And here are the errors: processing.app.debug.RunnerException: NullPointerException at processing.app.Sketch.placeException(Sketch.java:1543) at processing.app.debug.Runner.findException(Runner.java:583) at processing.app.debug.Runner.reportException(Runner.java:558) at processing.app.debug.Runner.exception(Runner.java:498) at processing.app.debug.EventThread.exceptionEvent(EventThread.java:367) at processing.app.debug.EventThread.handleEvent(EventThread.java:255) at processing.app.debug.EventThread.run(EventThread.java:89) Exception in thread "Animation Thread" java.lang.NullPointerException at org.openkinect.processing.Kinect.enableDepth(Kinect.java:70) at PointCloud.setup(PointCloud.java:48) at processing.core.PApplet.handleDraw(PApplet.java:1583) at processing.core.PApplet.run(PApplet.java:1503) at java.lang.Thread.run(Thread.java:637)

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  • Adapting a HTML/CSS dropdown menu to multi-level

    - by Adam Nygate
    Ive been trying to make the original dropdown into multi level for a site im working on. All of my attempts have failed (. For some reason i can only do "margin-right" to align the elements, and this causes some problems. I think it has something to do with the position attribute. Here is my HTML: <ol id="nav"> <li><a href="index.php">Home</a></li> <li class="dropdown_alignedLeft"> <a href="">Products</a> <ul><li class="dropdown_alignedRight"> <a href="">iPoP</a> <ul style="margin-right:-400px; top:0px;-webkit-border-top-right-radius: 5px;border-top-right-radius: 5px;-moz-border-radius-topright: 5px;"><li><a href="customers.php?category=ipop">iPoP - Network Solutions for Vessels</a></li></ul><li class="dropdown_alignedRight"> <a href="">Cameras</a> <ul style="margin-right:-400px; top:0px;-webkit-border-top-right-radius: 5px;border-top-right-radius: 5px;-moz-border-radius-topright: 5px;"><li><a href="customers.php?category=icam">iCam 501 Ultra - Intrinsically Safe Digital Camera with Flash</a></li></ul><li class="dropdown_alignedRight"> <a href="">BNWAS</a> <ul style="margin-right:-400px; top:0px;-webkit-border-top-right-radius: 5px;border-top-right-radius: 5px;-moz-border-radius-topright: 5px;"><li><a href="customers.php?category=bnwas">BNWAS - Bridge Navigation Watch Alarm System</a></li></ul><li class="dropdown_alignedRight"> <a href="">Lighting</a> <ul style="margin-right:-400px; top:0px;-webkit-border-top-right-radius: 5px;border-top-right-radius: 5px;-moz-border-radius-topright: 5px;"><li><a href="customers.php?category=peli">Peli 2690 - Intrinsically Safe LED Head Lamp</a></li></ul><li class="dropdown_alignedRight"> <a href="">Communication</a> <ul style="margin-right:-400px; top:0px;-webkit-border-top-right-radius: 5px;border-top-right-radius: 5px;-moz-border-radius-topright: 5px;"><li><a href="customers.php?category=handy">Ex-Handy 06 - Intrinsically Safe Cell Phone</a></li></ul> </ul> <li class="dropdown_alignedLeft"> <a href="">Customers</a> <ul> <li><a href="customers.php?category=maritime">Maritime</a></li> <li><a href="customers.php?category=non">Non-Maritime</a></li> <li class="dropdown_lastItem"><a href="customers.php?category=organizations">Regulatory Organizations</a></li> </ul> <li><a href="order.php">Product Enquiry</a></li> <li><a href="contact.php">Contact Us</a></li> <li class="dropdown_alignedLeft"> <a href="">Company</a> <ul> <!-- <li><a href="">About Us</a></li> --> <li><a href="newsandpr.php?category=News">News</a></li> <li class="dropdown_lastItem"><a href="newsandpr.php?category=Press Release">Press Releases</a></li> </ul> </ol> And my CSS: #nav { float:right; margin:15px 0 0; } #nav li { float:left; } #nav li a { display:block; font-family:"PT Sans","Helvetica Neue",Arial,sans-serif; font-size:16px; text-decoration:none; color:#2B95C8; padding:10px 20px 20px; } .dropdown_alignedLeft,.dropdown_alignedRight { position:relative; } #nav .dropdown_alignedLeft>a,#nav .dropdown_alignedRight>a { background:url(../images/dropdown_arrow_blue.png) no-repeat top right; padding:10px 30px 20px 20px; } #nav .dropdown_alignedLeft:hover>a,#nav .dropdown_alignedRight:hover>a { -moz-border-radius-topleft:5px; -moz-border-radius-topright:5px; -moz-border-radius-bottomright:0; -moz-border-radius-bottomleft:0; -webkit-border-top-left-radius:5px; -webkit-border-top-right-radius:5px; -webkit-border-bottom-right-radius:0; -webkit-border-bottom-left-radius:0; border-top-left-radius:5px; border-top-right-radius:5px; border-bottom-right-radius:0; border-bottom-left-radius:0; color:#FFF; background:#2378A1 url(../images/dropdown_arrow_blue.png) no-repeat bottom right; } .dropdown_alignedLeft ul,.dropdown_alignedRight ul { display:none; } #nav .dropdown_alignedLeft:hover>ul,#nav .dropdown_alignedRight:hover>ul { display:block; z-index:100; position:absolute; top:50px; -moz-border-radius-topleft:0; -moz-border-radius-topright:0; -moz-border-radius-bottomright:5px; -moz-border-radius-bottomleft:5px; -webkit-border-top-left-radius:0; -webkit-border-top-right-radius:0; -webkit-border-bottom-right-radius:5px; -webkit-border-bottom-left-radius:5px; border-top-left-radius:0; border-top-right-radius:0; border-bottom-right-radius:5px; border-bottom-left-radius:5px; background:#2378A1; padding:0 0 6px; } #nav .dropdown_alignedRight:hover>ul { top:50px; right:0; text-align:right; } #nav li ul li { float:none; border-bottom:1px dashed #2B95C8; margin:0 20px; } #nav li ul li.dropdown_innerTitle { border:none; font-family:"Helvetica Neue",Arial,sans-serif; font-size:15px; white-space:nowrap; color:#C8DDE7; margin:10px 20px 0; padding:10px 0; } #nav li ul li.dropdown_lastItem { border:none; } #nav li ul li a { font-family:"Helvetica Neue",Arial,sans-serif; font-size:13px; color:#FFF; white-space:nowrap; padding:10px 0 9px; } #nav>li:hover>a,#nav li .current_page { color:#2378A1; background:url(../images/current_page_arrow_blue.png) no-repeat center bottom; } #nav li ul li a:hover { color: #C8DDE7; } For a live version of the menu, please go here: JSFiddle - Live Menu

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  • Js/Jquery bind Datatable or Datalist

    - by Robin Rieger
    Scenario I have a input box for post codes. When you put in a postcode it makes a call to a web service and gets all the suburb names back and binds them to a list, like an input dropdown list. This works when I return a List<string> from the web service for just the names. No problem. The problem arises when I go to save the values to the db. When it gets saved I cannot save the name of the suburb in the suburb column in the db. I have to save the id of that suburb for the foreign key constraint. So then I changed the List<> thing slighty and cheated and returned the following. <ArrayOfString> <string>8213</string> <string>BROOKFIELD</string> <string>8214</string> <string>CHAPEL HILL</string> <string>8215</string> <string>FIG TREE POCKET</string> etc.... The reason for this is so I can have the value of the item in the drop down as the id and hence can save that in the code behind on save. To do this, I did the following: $(result).each(function (index, value) { var suburbname; var pattern = new RegExp('[0-9*]'); var m = pattern.exec(value); if (m == null) { suburbname = value var o = new Option(suburbname, suburbid); /// jquerify the DOM object 'o' so we can use the html method $(o).html(suburbname); $(document.getElementById('<%= suburb.ClientID %>')).append($("<option></option>") .attr("value", suburbid) .text(suburbname)); } else { suburbid = value } That works as well... the drop down only has name and the value for those is the number The problem....? I am making assumptions above which I don't like... I.e. that the name never has a number it, that the web service will always return the id first to set the id before running the add to the dropdown for the first time. It just feels wrong.... :S (thoughts?) So, if I change the web service to return a datatable, to out the following (which is what the whole query returns): <Suburbs diffgr:id="Suburbs1" msdata:rowOrder="0"> <SuburbID>8213</SuburbID> <SuburbName>BROOKFIELD</SuburbName> <StateID>4</StateID> <StateCode>07</StateCode> <CountryCode>61</CountryCode> <TimeZones>10.00</TimeZones> <Postcode>4069</Postcode> </Suburbs> Is there a way of acheiving the same as above in js/jquery. So when the user inputs the postcode the webservice returns the datatable and then binds it to the select with the SuburbID going into the value and the name going into the text??? Any other ways I could return the data from the web service to solve this? Note: essentially I need the option to look like this: <option value="8213">BROOKFIELD</option> I also thought I could make a second call to get just the id on the bind of the text... but I kind of want to only make one call.... Thanks in adance, Cheers Robin .net, C#, js, jquery, web service..... Solution with guidance from Billy The adding to the select using the other method below did not work, but my original way did once I had the correct variables so just used that.... The service returns: <ArrayOfMyClass> <MyClass> <ID>8213</ID> <Name>BROOKFIELD</Name> </MyClass> ... etc The js is: (note: it is onchange of the postcode input box. it runs a web service and then on success runs the following) function OnCompleted(result) { var _suburbs = result; var i = 0; $(_suburbs).each(function () { var SuburbName = _suburbs[i].Name; var SuburbID = _suburbs[i].ID; $(document.getElementById('<%= suburb.ClientID %>')).append($("<option></option>") .attr("value", SuburbID) .text(SuburbName)); i = i + 1; });

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  • C++ destructor seems to be called 'early'

    - by suicideducky
    Please see the "edit" section for the updated information. Sorry for yet another C++ dtor question... However I can't seem to find one exactly like mine as all the others are assigning to STL containers (that will delete objects itself) whereas mine is to an array of pointers. So I have the following code fragment #include<iostream> class Block{ public: int x, y, z; int type; Block(){ x=1; y=2; z=3; type=-1; } }; template <class T> class Octree{ T* children[8]; public: ~Octree(){ for( int i=0; i<8; i++){ std::cout << "del:" << i << std::endl; delete children[i]; } } Octree(){ for( int i=0; i<8; i++ ) children[i] = new T; } // place newchild in array at [i] void set_child(int i, T* newchild){ children[i] = newchild; } // return child at [i] T* get_child(int i){ return children[i]; } // place newchild at [i] and return the old [i] T* swap_child(int i, T* newchild){ T* p = children[i]; children[i] = newchild; return p; } }; int main(){ Octree< Octree<Block> > here; std::cout << "nothing seems to have broken" << std::endl; } Looking through the output I notice that the destructor is being called many times before I think it should (as Octree is still in scope), the end of the output also shows: del:0 del:0 del:1 del:2 del:3 Process returned -1073741819 (0xC0000005) execution time : 1.685 s Press any key to continue. For some reason the destructor is going through the same point in the loop twice (0) and then dying. All of this occures before the "nothing seems to have gone wrong" line which I expected before any dtor was called. Thanks in advance :) EDIT The code I posted has some things removed that I thought were unnecessary but after copying and compiling the code I pasted I no longer get the error. What I removed was other integer attributes of the code. Here is the origional: #include<iostream> class Block{ public: int x, y, z; int type; Block(){ x=1; y=2; z=3; type=-1; } Block(int xx, int yy, int zz, int ty){ x=xx; y=yy; z=zz; type=ty; } Block(int xx, int yy, int zz){ x=xx; y=yy; z=zz; type=0; } }; template <class T> class Octree{ int x, y, z; int size; T* children[8]; public: ~Octree(){ for( int i=0; i<8; i++){ std::cout << "del:" << i << std::endl; delete children[i]; } } Octree(int xx, int yy, int zz, int size){ x=xx; y=yy; z=zz; size=size; for( int i=0; i<8; i++ ) children[i] = new T; } Octree(){ Octree(0, 0, 0, 10); } // place newchild in array at [i] void set_child(int i, T* newchild){ children[i] = newchild; } // return child at [i] T* get_child(int i){ return children[i]; } // place newchild at [i] and return the old [i] T* swap_child(int i, T* newchild){ T* p = children[i]; children[i] = newchild; return p; } }; int main(){ Octree< Octree<Block> > here; std::cout << "nothing seems to have broken" << std::endl; } Also, as for the problems with set_child, get_child and swap_child leading to possible memory leaks this will be solved as a wrapper class will either use get before set or use swap to get the old child and write this out to disk before freeing the memory itself. I am glad that it is not my memory management failing but rather another error. I have not made a copy and/or assignment operator yet as I was just testing the block tree out, I will almost certainly make them all private very soon. This version spits out -1073741819. Thank you all for your suggestions and I apologise for highjacking my own thread :$

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  • facescontext.getcurrentinstance returns nullpointerexception

    - by mvg
    I am creating a Spring based JSF application, where I am getting FacesContext.getCurrentInstance which returns null. Here is my Java code public static ServletContext getServletContext() { return (ServletContext) FacesContext.getCurrentInstance() .getExternalContext().getContext(); } This is the stack trace of my error SEVERE: Exception sending context initialized event to listener instance of class org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dbSettingsServiceTarget' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.baytalkitec.smartcall.service.impl.DbSettingsServiceImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:883) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:839) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:440) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409) at java.security.AccessController.doPrivileged(Native Method) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardHost.start(StandardHost.java:785) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:519) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:581) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.baytalkitec.smartcall.service.impl.DbSettingsServiceImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:115) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:61) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:877) ... 31 more Caused by: java.lang.NullPointerException at com.smartcall.util.FacesUtil.getServletContext(FacesUtil.java:21) at com.smartcall.util.SpringApplicationContextUtil.init(SpringApplicationContextUtil.java:21) at com.smartcall.util.SpringApplicationContextUtil.<init>(SpringApplicationContextUtil.java:16) at com.smartcall.service.impl.DbSettingsServiceImpl.init(DbSettingsServiceImpl.java:17) at com.smartcall.service.impl.DbSettingsServiceImpl.<init>(DbSettingsServiceImpl.java:12) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100) ... 33 more and hence due to this error Server console in Eclipse reports that application failed to startup due to previous errors My web.xml file <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>smartcall2.0</display-name> <context-param> <param-name>javax.faces.STATE_SAVING_METHOD</param-name> <param-value>server</param-value> </context-param> <context-param> <param-name>javax.faces.CONFIG_FILES</param-name> <param-value> /WEB-INF/faces-config.xml,/WEB-INF/faces-managed-bean.xml,/WEB-INF/faces-navigation.xml </param-value> </context-param> <listener> <listener-class> com.sun.faces.config.ConfigureListener </listener-class> </listener> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> <filter> <display-name>RichFaces Filter</display-name> <filter-name>richfaces</filter-name> <filter-class>org.ajax4jsf.Filter</filter-class> </filter> <filter-mapping> <filter-name>richfaces</filter-name> <servlet-name>Faces Servlet</servlet-name> <dispatcher>REQUEST</dispatcher> <dispatcher>FORWARD</dispatcher> <dispatcher>INCLUDE</dispatcher> </filter-mapping> <servlet> <servlet-name>Faces Servlet</servlet-name> <servlet-class>javax.faces.webapp.FacesServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <context-param> <param-name>javax.faces.DEFAULT_SUFFIX</param-name> <param-value>.xhtml</param-value> </context-param> <servlet-mapping> <servlet-name>Faces Servlet</servlet-name> <url-pattern>*.jsf</url-pattern> </servlet-mapping> <session-config> <session-timeout>180</session-timeout> </session-config> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> I am not clear whether this error belongs to Spring or JSF or Eclipse. I am using Eclipse Galileo, JSF 1.2,Spring 3 Please help Thanks in advance

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  • JSF : How to refresh required field in ajax request

    - by Tama
    Ok, here you are the core problem. The page. I have two required "input text". A command button that changes the bean value and reRenderes the "job" object. <a4j:form id="pervForm"> SURNAME:<h:inputText id="surname" label="Surname" value="#{prevManager.surname}" required="true" /> <br/> JOB:<h:inputText value="#{prevManager.job}" id="job" maxlength="10" size="10" label="#{msg.common_label_job}" required="true" /> <br/> <a4j:commandButton value="Set job to Programmer" ajaxSingle="true" reRender="job"> <a4j:actionparam name="jVal" value="Programmer" assignTo="#{prevManager.job}"/> </a4j:commandButton> <h:commandButton id="save" value="save" action="save" class="HATSBUTTON"/> </a4j:form> Here the simple manager: public class PrevManager { private String surname; private String job; public String getSurname() { return surname; } public void setSurname(String surname) { this.surname = surname; } public String getJob() { return job; } public void setJob(String job) { this.job = job; } public String save() { //do something } } Let's do this: Write something on the Job input text (such as "teacher"). Leave empty the surname. Save. Validation error appears (surname is mandatory). Press "Set job to Programmer": nothing happens. Checking the bean value, I discovered that it is correctly updated, indeed the component on the page is not updated! Well, according to the JBoss Docs I found: Ajax region is a key ajax component. It limits the part of the component tree to be processed on the server side when ajax request comes. Processing means invocation during Decode, Validation and Model Update phase. Most common reasons to use a region are: -avoiding the aborting of the JSF lifecycle processing during the validation of other form input unnecessary for given ajax request; -defining the different strategies when events will be delivered (immediate="true/false") -showing an individual indicator of an ajax status -increasing the performance of the rendering processing (selfRendered="true/false", renderRegionOnly="true/false") The following two examples show the situation when a validation error does not allow to process an ajax input. Type the name. The outputText component should reappear after you. However, in the first case, this activity will be aborted because of the other field with required="true". You will see only the error message while the "Job" field is empty. Here you are the example: <ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core" xmlns:a4j="http://richfaces.org/a4j" xmlns:rich="http://richfaces.org/rich"> <style> .outergridvalidationcolumn { padding: 0px 30px 10px 0px; } </style> <a4j:outputPanel ajaxRendered="true"> <h:messages style="color:red" /> </a4j:outputPanel> <h:panelGrid columns="2" columnClasses="outergridvalidationcolumn"> <h:form id="form1"> <h:panelGrid columns="2"> <h:outputText value="Name" /> <h:inputText value="#{userBean.name}"> <a4j:support event="onkeyup" reRender="outname" /> </h:inputText> <h:outputText value="Job" /> <h:inputText required="true" id="job2" value="#{userBean.job}" /> </h:panelGrid> </h:form> <h:form id="form2"> <h:panelGrid columns="2"> <h:outputText value="Name" /> <a4j:region> <h:inputText value="#{userBean.name}"> <a4j:support event="onkeyup" reRender="outname" /> </h:inputText> </a4j:region> <h:outputText value="Job" /> <h:inputText required="true" id="job1" value="#{userBean.job}" /> </h:panelGrid> </h:form> </h:panelGrid> <h:outputText id="outname" style="font-weight:bold" value="Typed Name: #{userBean.name}" /> <br /> </ui:composition> Form1: the behaviour is incorrect. I need to fill the job and then the name. Form2: the behaviour is correct. I do not need to fill the job to see the correct value. Unfortunately using Ajax region does not help (indeed I used it in a bad way ...) because my fields are both REQUIRED. That's the main different. Any idea? Many thanks.

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  • C# Persistent WebClient

    - by Nullstr1ng
    I have a class written in C# (Windows Forms) It's a WebClient class which I intent to use in some website and for Logging In and navigation. Here's the complete class pastebin.com (the class has 197 lines so I just use pastebin. Sorry if I made a little bit harder for you to read the class, also below this post) The problem is, am not sure why it's not persistent .. I was able to log in, but when I navigate to other page (without leaving the domain), I was thrown back to log in page. Can you help me solving this problem? one issue though is, the site I was trying to connect is "HTTPS" protocol. I have not yet tested this on just a regular HTTP. Thank you in advance. /* * Web Client v1.2 * --------------- * Date: 12/17/2010 * author: Jayson Ragasa */ using System; using System.Collections; using System.Collections.Specialized; using System.Collections.Generic; using System.Text; using System.IO; using System.Net; using System.Web; namespace Nullstring.Modules.WebClient { public class WebClientLibrary { #region vars string _method = string.Empty; ArrayList _params; CookieContainer cookieko; HttpWebRequest req = null; HttpWebResponse resp = null; Uri uri = null; #endregion #region properties public string Method { set { _method = value; } } #endregion #region constructor public WebClientLibrary() { _method = "GET"; _params = new ArrayList(); cookieko = new CookieContainer(); } #endregion #region methods public void ClearParameter() { _params.Clear(); } public void AddParameter(string key, string value) { _params.Add(string.Format("{0}={1}", WebTools.URLEncodeString(key), WebTools.URLEncodeString(value))); } public string GetResponse(string URL) { StringBuilder response = new StringBuilder(); #region create web request { uri = new Uri(URL); req = (HttpWebRequest)WebRequest.Create(URL); req.Method = "GET"; req.GetLifetimeService(); } #endregion #region get web response { resp = (HttpWebResponse)req.GetResponse(); Stream resStream = resp.GetResponseStream(); int bytesReceived = 0; string tempString = null; int count = 0; byte[] buf = new byte[8192]; do { count = resStream.Read(buf, 0, buf.Length); if (count != 0) { bytesReceived += count; tempString = Encoding.UTF8.GetString(buf, 0, count); response.Append(tempString); } } while (count > 0); } #endregion return response.ToString(); } public string GetResponse(string URL, bool HasParams) { StringBuilder response = new StringBuilder(); #region create web request { uri = new Uri(URL); req = (HttpWebRequest)WebRequest.Create(URL); req.MaximumAutomaticRedirections = 20; req.AllowAutoRedirect = true; req.Method = this._method; req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; req.KeepAlive = true; req.CookieContainer = this.cookieko; req.UserAgent = "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_8; en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.224 Safari/534.10"; } #endregion #region build post data { if (HasParams) { if (this._method.ToUpper() == "POST") { string Parameters = String.Join("&", (String[])this._params.ToArray(typeof(string))); UTF8Encoding encoding = new UTF8Encoding(); byte[] loginDataBytes = encoding.GetBytes(Parameters); req.ContentType = "application/x-www-form-urlencoded"; req.ContentLength = loginDataBytes.Length; Stream stream = req.GetRequestStream(); stream.Write(loginDataBytes, 0, loginDataBytes.Length); stream.Close(); } } } #endregion #region get web response { resp = (HttpWebResponse)req.GetResponse(); Stream resStream = resp.GetResponseStream(); int bytesReceived = 0; string tempString = null; int count = 0; byte[] buf = new byte[8192]; do { count = resStream.Read(buf, 0, buf.Length); if (count != 0) { bytesReceived += count; tempString = Encoding.UTF8.GetString(buf, 0, count); response.Append(tempString); } } while (count > 0); } #endregion return response.ToString(); } #endregion } public class WebTools { public static string EncodeString(string str) { return HttpUtility.HtmlEncode(str); } public static string DecodeString(string str) { return HttpUtility.HtmlDecode(str); } public static string URLEncodeString(string str) { return HttpUtility.UrlEncode(str); } public static string URLDecodeString(string str) { return HttpUtility.UrlDecode(str); } } } UPDATE Dec 22GetResponse overload public string GetResponse(string URL) { StringBuilder response = new StringBuilder(); #region create web request { //uri = new Uri(URL); req = (HttpWebRequest)WebRequest.Create(URL); req.Method = "GET"; req.CookieContainer = this.cookieko; } #endregion #region get web response { resp = (HttpWebResponse)req.GetResponse(); Stream resStream = resp.GetResponseStream(); int bytesReceived = 0; string tempString = null; int count = 0; byte[] buf = new byte[8192]; do { count = resStream.Read(buf, 0, buf.Length); if (count != 0) { bytesReceived += count; tempString = Encoding.UTF8.GetString(buf, 0, count); response.Append(tempString); } } while (count 0); } #endregion return response.ToString(); } But still I got thrown back to login page. UPDATE: Dec 23 I tried listing the cookie and here's what I get at first, I have to login to a webform and this I have this Cookie JSESSIONID=368C0AC47305282CBCE7A566567D2942 then I navigated to another page (but on the same domain) I got a different Cooke? JSESSIONID=9FA2D64DA7669155B9120790B40A592C What went wrong? I use the code updated last Dec 22

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  • System.Timers.Timer leaking due to "direct delegate roots"

    - by alimbada
    Apologies for the rather verbose and long-winded post, but this problem's been perplexing me for a few weeks now so I'm posting as much information as I can in order to get this resolved quickly. We have a WPF UserControl which is being loaded by a 3rd party app. The 3rd party app is a presentation application which loads and unloads controls on a schedule defined by an XML file which is downloaded from a server. Our control, when it is loaded into the application makes a web request to a web service and uses the data from the response to display some information. We're using an MVVM architecture for the control. The entry point of the control is a method that is implementing an interface exposed by the main app and this is where the control's configuration is set up. This is also where I set the DataContext of our control to our MainViewModel. The MainViewModel has two other view models as properties and the main UserControl has two child controls. Depending on the data received from the web service, the main UserControl decides which child control to display, e.g. if there is a HTTP error or the data received is not valid, then display child control A, otherwise display child control B. As you'd expect, these two child controls bind two separate view models each of which is a property of MainViewModel. Now child control B (which is displayed when the data is valid) has a RefreshService property/field. RefreshService is an object that is responsible for updating the model in a number of ways and contains 4 System.Timers.Timers; a _modelRefreshTimer a _viewRefreshTimer a _pageSwitchTimer a _retryFeedRetrievalOnErrorTimer (this is only enabled when something goes wrong with retrieving data). I should mention at this point that there are two types of data; the first changes every minute, the second changes every few hours. The controls' configuration decides which type we are using/displaying. If data is of the first type then we update the model quite frequently (every 30 seconds) using the _modelRefreshTimer's events. If the data is of the second type then we update the model after a longer interval. However, the view still needs to be refreshed every 30 seconds as stale data needs to be removed from the view (hence the _viewRefreshTimer). The control also paginates the data so we can see more than we can fit on the display area. This works by breaking the data up into Lists and switching the CurrentPage (which is a List) property of the view model to the right List. This is done by handling the _pageSwitchTimer's Elapsed event. Now the problem My problem is that the control, when removed from the visual tree doesn't dispose of it's timers. This was first noticed when we started getting an unusually high number of requests on the web server end very soon after deploying this control and found that requests were being made at least once a second! We found that the timers were living on and not stopping hours after the control had been removed from view and that the more timers there were the more requests piled up at the web server. My first solution was to implement IDisposable for the RefreshService and do some clean up when the control's UnLoaded event was fired. Within the RefreshServices Dispose method I've set Enabled to false for all the timers, then used the Stop() method on all of them. I've then called Dispose() too and set them to null. None of this worked. After some reading around I found that event handlers may hold references to Timers and prevent them from being disposed and collected. After some more reading and researching I found that the best way around this was to use the Weak Event Pattern. Using this blog and this blog I've managed to work around the shortcomings in the Weak Event pattern. However, none of this solves the problem. Timers are still not being disabled or stopped (let alone disposed) and web requests are continuing to build up. Mem Profiler tells me that "This type has N instances that are directly rooted by a delegate. This can indicate the delegate has not been properly removed" (where N is the number of instances). As far as I can tell though, all listeners of the Elapsed event for the timers are being removed during the cleanup so I can't understand why the timers continue to run. Thanks for reading. Eagerly awaiting your suggestions/comments/solutions (if you got this far :-p)

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  • Android Multiple objects in SimpleAdapter

    - by Adam Sherratt
    I have a need (unless you can think of a better way) of passing multiple objects to a custom list adapter. I know that I'm barking up the wrong tree here, and would appreciate someone setting me on the right course! Thanks playlistadapter = new MyPlaylistAdapter(MyApplication.getAppContext(), songsList, retained_songsList, folderMode, R.layout.file_view, new String[] { "songTitle","songAlbum", "songPath" }, new int[] { R.id.checkTextView, R.id.text2, R.id.text3 }); And my adapter class: public class MyPlaylistAdapter extends SimpleAdapter{ private ArrayList <Song> songsList = new ArrayList<Song>(); private ArrayList <Song> retained_songsList = new ArrayList<Song>(); private ArrayList<Song> playlistcheck = new ArrayList<Song>(); private String folderMode; private String TAG = "AndroidMediaCenter"; public MyPlaylistAdapter(Context context,List<Song> SongsList, List<Song> Retained_songsList, String FolderMode,int resource, String[] from, int[] to) { super(context, null, resource, from, to); songsList.clear(); songsList.addAll(SongsList); Log.i(TAG, "MyPlayListAdapter Songslist = " + songsList.size()); retained_songsList.clear(); retained_songsList.addAll(Retained_songsList); folderMode = FolderMode; } public View getView(int position, View convertView, ViewGroup parent) { //PlayListViewHolder holder; CheckedTextView checkTextView; TextView text2; TextView text3; if (convertView == null) { LayoutInflater inflater = (LayoutInflater) MyApplication.getAppContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); //LayoutInflater inflater=getLayoutInflater(); convertView=inflater.inflate(R.layout.file_view, parent, false); //convertView.setBackgroundColor(0xFF00FF00 ); //holder = new PlayListViewHolder(); checkTextView = (CheckedTextView) convertView.findViewById(R.id.checkTextView); text2 = (TextView) convertView.findViewById(R.id.text2); text3 = (TextView) convertView.findViewById(R.id.text3); //convertView.setTag(holder); } else { //holder = (PlayListViewHolder) convertView.getTag(); } //put something into textviews String tracks = null; String tracks_Details = null; String trackspath = null; tracks = songsList.get(position).getSongTitle(); tracks_Details = songsList.get(position).getAlbum() + " (" + songsList.get(position).getArtist() + ")"; trackspath = songsList.get(position).getSongPath(); checkTextView = (CheckedTextView) convertView.findViewById(R.id.checkTextView); text2 = (TextView) convertView.findViewById(R.id.text2); text3 = (TextView) convertView.findViewById(R.id.text3); checkTextView.setText(tracks); if(folderMode.equals("Playlists")){ checkTextView.setBackgroundColor(Color.GREEN); checkTextView.setChecked(false); try { int listsize_rs = retained_songsList.size(); for (int j = 0; j<listsize_rs;j++){ if((retained_songsList.get(j).getSongPath()).equals(songsList.get(position).getSongPath())){ checkTextView.setBackgroundColor(Color.TRANSPARENT); //Need to check here whether the checkedtextview is ticked or not checkTextView.setChecked(true); playlistcheck.add(songsList.get(position)); break; } } } catch (Exception e) { e.printStackTrace(); } }else { //Need to check here whether the checkedtextview is ticked or not try { if (songsList.get(position).getSongCheckedStatus()==true){ checkTextView.setChecked(true); }else{ checkTextView.setChecked(false); } } catch (Exception e) { e.printStackTrace(); } } text2.setText(tracks_Details); text3.setText(trackspath); Log.i(TAG, "MyPlayListAdapter Songslist = " + songsList.size()); return convertView; } } However, this doesn't inflate, throwing the following errors: 10-26 23:11:09.464: E/AndroidRuntime(2826): FATAL EXCEPTION: main 10-26 23:11:09.464: E/AndroidRuntime(2826): java.lang.RuntimeException: Error receiving broadcast Intent { act=android.intent.action.GetMusicComplete flg=0x10 } in com.Nmidia.AMC.MusicActivity$18@414c5770 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:765) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.os.Handler.handleCallback(Handler.java:615) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.os.Handler.dispatchMessage(Handler.java:92) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.os.Looper.loop(Looper.java:137) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.app.ActivityThread.main(ActivityThread.java:4745) 10-26 23:11:09.464: E/AndroidRuntime(2826): at java.lang.reflect.Method.invokeNative(Native Method) 10-26 23:11:09.464: E/AndroidRuntime(2826): at java.lang.reflect.Method.invoke(Method.java:511) 10-26 23:11:09.464: E/AndroidRuntime(2826): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 10-26 23:11:09.464: E/AndroidRuntime(2826): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 10-26 23:11:09.464: E/AndroidRuntime(2826): at dalvik.system.NativeStart.main(Native Method) 10-26 23:11:09.464: E/AndroidRuntime(2826): Caused by: java.lang.NullPointerException 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.widget.SimpleAdapter.getCount(SimpleAdapter.java:93) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.widget.ListView.setAdapter(ListView.java:460) 10-26 23:11:09.464: E/AndroidRuntime(2826): at com.Nmidia.AMC.MusicActivity.setFilterMusic(MusicActivity.java:1230) 10-26 23:11:09.464: E/AndroidRuntime(2826): at com.Nmidia.AMC.MusicActivity$18.onReceive(MusicActivity.java:996) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:755) 10-26 23:11:09.464: E/AndroidRuntime(2826): ... 9 more

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  • Unable to output XML data in a manageable way

    - by Rob
    I've been given data from a previous version of a website (it was a custom CMS) and am looking to get it into a state that I can import it into my Wordpress site. This is what I'm working on - http://www.teamworksdesign.com/clients/ciw/datatest/index.php. If you scroll down to row 187 the data starts to fail (there should be a red message) with the following error message: Fatal error: Uncaught exception 'Exception' with message 'String could not be parsed as XML' in /home/teamwork/public_html/clients/ciw/datatest/index.php:132 Stack trace: #0 /home/teamwork/public_html/clients/ciw/datatest/index.php(132): SimpleXMLElement-__construct(' Can anyone see what the problem is and how to fix it? This is how I'm outputting the date: <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body> <?php ini_set('memory_limit','1024M'); ini_set('max_execution_time', 500); //300 seconds = 5 minutes echo "<br />memory_limit: " . ini_get('memory_limit') . "<br /><br />"; echo "<br />max_execution_time: " . ini_get('max_execution_time') . "<br /><br />"; libxml_use_internal_errors(true); $z = new XMLReader; $z->open('dbo_Content.xml'); $doc = new DOMDocument; $doc->preserveWhiteSpace = false; // move to the first <product /> node while ($z->read() && $z->name !== 'dbo_Content'); $c = 0; // now that we're at the right depth, hop to the next <product/> until the end of the tree while ($z->name === 'dbo_Content') { if($c < 201) { // either one should work $node = simplexml_import_dom($doc->importNode($z->expand(), true)); if($node->ClassId == 'policydocument') { $c++; echo "<h1>Row: $c</h1>"; echo "<pre>"; echo htmlentities($node->XML) . "<br /><br /><br /><b>*******</b><br /><br /><br />"; echo "</pre>"; try{ $xmlObject = new SimpleXMLElement($node->XML); foreach ($xmlObject->fields[0]->field as $field) { switch((string) $field['name']) { case 'parentId': echo "<b>PARENT ID: </b> " . $field->value . "<br />"; break; case 'title': echo "<b>TITLE: </b> " . $field->value . "<br />"; break; case 'summary': echo "<b>SUMMARY: </b> " . $field->value . "<br />"; break; case 'body': echo "<b>BODY:</b> " . $field->value . "<br />"; break; case 'published': echo "<b>PUBLISHED:</b> " . $field->value . "<br />"; break; } } echo '<br /><h2 style="color:green;">Success on node: '.$node->ContentId.'</h2><hr /><br />'; } catch (Exception $e){ echo '<h2 style="color:red;">Failed on node: '.$node->ContentId.'</h2>'; } } // go to next <product /> $z->next('dbo_Content'); } } ?> </body> </html>

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  • Need help with writing from XML to a SQL Server database (detailed)

    - by fogedi
    I'm a bit of a newbie with XML and WebServices and stuff like that. I'm working on a project using GlassFish OpenESB to schedule a process to get some information from a webservice and then store in a database. The criteria is basically that i have to use GlassFish OpenESB or EJB modules where i can expose webservices or something along those lines, AND i have to use SQL Server 2005. So far I've been able to talk to the webservice: and receive something along those lines <?xml version="1.0" encoding="UTF-8" standalone="no"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://schemas.xmlsoap.org/soap/envelope/ http://schemas.xmlsoap.org/soap/envelope/"> <SOAP-ENV:Body> <m:entrypoint_getSettlementsOperationResponse xmlns:m="http://j2ee.netbeans.org/wsdl/BorgunTestBPEL/entrypoint_getSettlements"> <part1> <GetSettlementsByMerchantResponse xmlns="http://Borgun.Services.Gateway/2010/04/Settlement"> <GetSettlementsByMerchantResult xmlns:a="http://schemas.datacontract.org/2004/07/Borgun.Library.Common" xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns:msgns="http://Borgun.Services.Gateway/2010/04/Settlement" xmlns:ns0="http://j2ee.netbeans.org/wsdl/BorgunTestBPEL/entrypoint_getSettlements"> <a:CreditCardSettlement> <a:amexAmount>XXX</a:amexAmount> <a:amount>XXXX</a:amount> <a:batches> <a:CreditCardBatch> <a:batchdate>xxx</a:batchdate> <a:batchnumber>XXXX</a:batchnumber> <a:currencyCode>xxxx</a:currencyCode> <a:merchantnumber>xxxx</a:merchantnumber> <a:settlementRunNumber>xx4</a:settlementRunNumber> <a:settlementdate>2010-04-06T00:00:00</a:settlementdate> <a:slips>2</a:slips> <a:sum>xxxx</a:sum> </a:CreditCardBatch> <a:CreditCardBatch> <a:batchdate>xxx</a:batchdate> <a:batchnumber>xxxxx</a:batchnumber> <a:currencyCode>xxxx</a:currencyCode> <a:merchantnumber>xxxx</a:merchantnumber> <a:settlementRunNumber>xxxx</a:settlementRunNumber> <a:settlementdate>xxxx</a:settlementdate> <a:slips>x</a:slips> <a:sum>xxx</a:sum> </a:CreditCardBatch> </a:batches> <a:commission>xx</a:commission> <a:currencyCode>xxx</a:currencyCode> <a:deduction>-xxx</a:deduction> <a:deductionItems> <a:CrediCardSettlementDeduction> <a:amount>-xxx</a:amount> <a:code>VIÐSKF</a:code> <a:currencyCode>ISK</a:currencyCode> <a:merchantnumber>xxx</a:merchantnumber> <a:settlementrunnumber>xxx</a:settlementrunnumber> <a:text>Afsláttur v/ekorta</a:text> </a:CrediCardSettlementDeduction> <a:CrediCardSettlementDeduction> <a:amount>-335.00</a:amount> <a:code>ÁLAGKREK</a:code> <a:currencyCode>ISK</a:currencyCode> <a:merchantnumber>xxx</a:merchantnumber> <a:settlementrunnumber>xxx</a:settlementrunnumber> <a:text>xxx</a:text> </a:CrediCardSettlementDeduction> </a:deductionItems> </a:CreditCardSettlement> </GetSettlementsByMerchantResult> </GetSettlementsByMerchantResponse> </part1> </m:entrypoint_getSettlementsOperationResponse> </SOAP-ENV:Body> </SOAP-ENV:Envelope> I have access to the SQL Server 2005 server which is remote and i know i can insert into it but given that now i have a one-to-many relationship i want to be able to rollback if something fails. So in short how can I insert from this XML into the DB preferably without manually walking through the XML tree? I'm pretty sure I'm supposed to be able to use Entity and Session Beans or maybe JAXB bindings but I'm simply not being successful. One of the reasons might have something to do with the fact that the soap response contains an array of CreditCardSettlements and each of which contains an array of Batches and DeductionItems It would be best if someone can help me do this via a BPEL in GlassFish OpenESB but any hint at a java solution is much appreciated.

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  • Unknown Space between 2 Container Divs

    - by Paul
    Im trying to determine why there would be space between 2 Containing Divs as shown, and I would appreciate any insight as to why this is occurring: The unknown space occurs between the mid-feature div (olive) and bottom-wrap div (orange) I have no heights set anywhere. I would like to see the orange div up against the olive div just above it. I can post all of the CSS, or you can FireBug this: www.davincispainting.com Here is all of the CSS: *{ margin:0; padding:0 } body { /*background: url("/images/blueback5.jpg") repeat-x scroll 0 0 transparent;*/ background-color: #9EB0C8; font-family: Arial,Helvetica,sans-serif; font-size: 62.5%; } #top-wrap { height: 126px; width: 940px; /*background-color: Yellow;*/ margin: 5px 0 0 0; } #head-logo { background: url("/images/logo3.png") no-repeat scroll 0 0 transparent; /*background-color: Green;*/ height: 126px; width: 214px; margin: 0px 0 0 58px; position: absolute; z-index: 100; } #submenu1 { border: 0 solid #000000; color: #FFFFFF; /*background-color:Green;*/ font-family: Arial,Impact,Impact5,Charcoal6,sans-serif; font-size: 1.6em; height: 35px; width: 155px; /*padding: 10px 0 0;*/ margin: 7px 0 0 774px; position: absolute; } #submenu2 { /*border: 0 solid #000000;*/ color: #FFFFFF; /*background-color:Blue;*/ font-family: Arial,Impact,Impact5,Charcoal6,sans-serif; font-size: 1.8em; text-align: right; height: 20px; width: 114px; margin: 30px 0 0 818px; /*padding: 5px 0 0;*/ } a.contact { background-image: url("/images/RapidButton2.png"); /*border: 1px solid #CCCCCC;*/ /*clear: both;*/ /*color: #FFFFFF;*/ display: block; font-size: 11px; /*margin-bottom: 1px;*/ /*padding: 3px 5px;*/ text-align: center; width: 165px; height: 27px; } a.contact:hover { background-image: url("/images/RapidButtonHov2.png"); } #navigation-primary { margin: 12px 0 0 276px; position: absolute; } #global-wrap { margin: 0 auto; text-align: left; width: 880px; overflow: hidden; } #global-inner { background: url("/images/main_bg.gif") repeat-y scroll 0 0 #E4EAEF; font-family: Arial; font-size: 1.2em; margin: 15px 0 55px 0; overflow: hidden; text-align: left; width: 880px; } #global-inner .topleft { background: url("/images/main_left_top_corner2.jpg") no-repeat scroll left top transparent; float: left; height: 9px; width: 9px; } #global-inner .topright { background: url("/images/main_right_top_corner2.jpg") no-repeat scroll right top transparent; float: right; height: 9px; width: 9px; } #global-inner .bottomleft { background: url("/images/main_left_bottom_corner.jpg") no-repeat scroll left bottom transparent; float: left; height: 9px; margin-top: -8px; /*margin: 776px 0 0 0;*/ width: 9px; } #global-inner .bottomright { background: url("/images/main_right_bottom_corner.jpg") no-repeat scroll right bottom transparent; float: right; height: 9px; margin-top: -8px; /*margin: 776px 0 0 0;*/ width: 9px; } #top-feature { height:330px; width: 848px; margin: 12px 0 0 16px; background: #E4EAEF; /*background: orange;*/ /*padding: 10px 0 0 10px;*/ position: absolute; text-align: left; } .slideshow { height: 330px; width: 848px; margin: 0 0 0 0; /*background: blue;*/ position: absolute; } #mid-feature { margin:350px 0 0 16px; width:848px; height:318px; background-color:Olive; position:relative; overflow:hidden; } #mid-featureleft { height:318px; width:552px; /*background-color:Purple;*/ float:left; position:relative; } #mid-featureright { height:318px; width:296px; background-color:#B9C1CC; /*background-color: red;*/ float:left; position: relative; } #mid-featureleft h1 { color: #FF0000; font-family: Arial,Helvetica,sans-serif; font-size: 2.1em; } #mid-featureleft .contentbox { padding:7px 7px 7px 7px; } #mid-featureleft p { color: #0C2A55; margin:0px 0 11px 0px; /*font-style:normal;*/ /*width: 97%;*/ /*font-size: .5em;*/ font-size: 12px; } #bottom-wrap { height:60px; width: 868px; margin: auto 0 0 6px; background:orange; position: relative; } #copyright { float: left; /*background-color:Teal;*/ width: 260px; height: 60px; text-align: left; position: absolute; margin:0 0 0 6px; } #bottom-logos { height:60px; width:596px; margin:0 0 0 267px; background: url("/images/logos2.png") no-repeat scroll 0 0 transparent; /*background-color:red;*/ position:absolute; }

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  • Compat Wireless Drivers Centrino N-2230

    - by user2699451
    So I am using linux and am having trouble installing the Compat Wireless drivers Hardware: Intel Centrino N-2230 OS: Linux Mint 64bit (kernel 13.08-generic) I followed this link http://www.mathyvanhoef.com/2012/09/compat-wireless-injection-patch-for.html Output: apt-get install linux-headers-$(uname -r) Reading package lists... Done Building dependency tree Reading state information... Done linux-headers-3.8.0-19-generic is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 19 not upgraded. charles-W55xEU compat-wireless-2010-10-16 # cd ~ charles-W55xEU ~ # dir adt-bundle-linux-x86_64-20130917.zip Desktop known_hosts_backup charles-W55xEU ~ # wget http://www.orbit-lab.org/kernel/compat-wireless-3-stable/v3.6/compat-wireless-3.6.2-1-snp.tar.bz2 --2013-10-29 10:28:23-- http://www.orbit-lab.org/kernel/compat-wireless-3-stable/v3.6/compat-wireless-3.6.2-1-snp.tar.bz2 Resolving www.orbit-lab.org (www.orbit-lab.org)... 128.6.192.131 Connecting to www.orbit-lab.org (www.orbit-lab.org)|128.6.192.131|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 4443700 (4,2M) [application/x-bzip2] Saving to: ‘compat-wireless-3.6.2-1-snp.tar.bz2’ 100%[======================================>] 4 443 700 13,5KB/s in 11m 3s 2013-10-29 10:39:27 (6,55 KB/s) - ‘compat-wireless-3.6.2-1-snp.tar.bz2’ saved [4443700/4443700] charles-W55xEU ~ # tar -xf compat-wireless-3.6.2-1-snp.tar.bz2 charles-W55xEU ~ # cd compat-wireless-3.6-rc6-1 bash: cd: compat-wireless-3.6-rc6-1: No such file or directory charles-W55xEU ~ # dir adt-bundle-linux-x86_64-20130917.zip Desktop compat-wireless-3.6.2-1-snp known_hosts_backup compat-wireless-3.6.2-1-snp.tar.bz2 charles-W55xEU ~ # cd compat-wireless-3.6.2-1-snp/ charles-W55xEU compat-wireless-3.6.2-1-snp # dir code-metrics.txt defconfigs linux-next-pending pending-stable compat drivers MAINTAINERS README config.mk enable-older-kernels Makefile scripts COPYRIGHT include net udev crap linux-next-cherry-picks patches charles-W55xEU compat-wireless-3.6.2-1-snp # wget http://patches.aircrack-ng.org/mac80211.compat08082009.wl_frag+ack_v1.patch --2013-10-29 10:40:52-- http://patches.aircrack-ng.org/mac80211.compat08082009.wl_frag+ack_v1.patch Resolving patches.aircrack-ng.org (patches.aircrack-ng.org)... 213.186.33.2, 2001:41d0:1:1b00:213:186:33:2 Connecting to patches.aircrack-ng.org (patches.aircrack-ng.org)|213.186.33.2|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 1049 (1,0K) [text/plain] Saving to: ‘mac80211.compat08082009.wl_frag+ack_v1.patch’ 100%[======================================>] 1 049 --.-K/s in 0s 2013-10-29 10:40:56 (180 MB/s) - ‘mac80211.compat08082009.wl_frag+ack_v1.patch’ saved [1049/1049] charles-W55xEU compat-wireless-3.6.2-1-snp # patch -p1 < mac80211.compat08082009.wl_frag+ack_v1.patch patching file net/mac80211/tx.c Hunk #1 succeeded at 792 (offset 115 lines). charles-W55xEU compat-wireless-3.6.2-1-snp # wget -Ocompatwireless_chan_qos_frag.patch http://pastie.textmate.org/pastes/4882675/download --2013-10-29 10:43:18-- http://pastie.textmate.org/pastes/4882675/download Resolving pastie.textmate.org (pastie.textmate.org)... 178.79.137.125 Connecting to pastie.textmate.org (pastie.textmate.org)|178.79.137.125|:80... connected. HTTP request sent, awaiting response... 301 Moved Permanently Location: http://pastie.org/pastes/4882675/download [following] --2013-10-29 10:43:20-- http://pastie.org/pastes/4882675/download Resolving pastie.org (pastie.org)... 96.126.119.119 Connecting to pastie.org (pastie.org)|96.126.119.119|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 2036 (2,0K) [application/octet-stream] Saving to: ‘compatwireless_chan_qos_frag.patch’ 100%[======================================>] 2 036 --.-K/s in 0,001s 2013-10-29 10:43:21 (3,35 MB/s) - ‘compatwireless_chan_qos_frag.patch’ saved [2036/2036] charles-W55xEU compat-wireless-3.6.2-1-snp # patch -p1 < compatwireless_chan_qos_frag.patch patching file drivers/net/wireless/rtl818x/rtl8187/dev.c patching file net/mac80211/tx.c Hunk #1 succeeded at 1495 (offset 8 lines). patching file net/wireless/chan.c charles-W55xEU compat-wireless-3.6.2-1-snp # make ./scripts/gen-compat-autoconf.sh /root/compat-wireless-3.6.2-1-snp/.config /root/compat-wireless-3.6.2-1-snp/config.mk > include/linux/compat_autoconf.h make -C /lib/modules/3.8.0-19-generic/build M=/root/compat-wireless-3.6.2-1-snp modules make[1]: Entering directory `/usr/src/linux-headers-3.8.0-19-generic' CC [M] /root/compat-wireless-3.6.2-1-snp/compat/main.o LD [M] /root/compat-wireless-3.6.2-1-snp/compat/compat.o CC [M] /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.o In file included from /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma.h:8:0, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:8, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8: /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma_driver_pci.h:217:23: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_core_pci_init’ In file included from /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma.h:10:0, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:8, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8: /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma_driver_gmac_cmn.h:95:23: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_core_gmac_cmn_init’ In file included from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8:0: /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:25:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_bus_register’ /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:152:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_bus_register’ /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:17:21: warning: ‘bcma_bus_next_num’ defined but not used [-Wunused-variable] /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:93:12: warning: ‘bcma_register_cores’ defined but not used [-Wunused-function] make[3]: *** [/root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.o] Error 1 make[2]: *** [/root/compat-wireless-3.6.2-1-snp/drivers/bcma] Error 2 make[1]: *** [_module_/root/compat-wireless-3.6.2-1-snp] Error 2 make[1]: Leaving directory `/usr/src/linux-headers-3.8.0-19-generic' make: *** [modules] Error 2 charles-W55xEU compat-wireless-3.6.2-1-snp # make install Warning: You may or may not need to update your initframfs, you should if any of the modules installed are part of your initramfs. To add support for your distribution to do this automatically send a patch against ./scripts/update-initramfs. If your distribution does not require this send a patch against the '/usr/bin/lsb_release -i -s': LinuxMint tag for your distribution to avoid this warning. make -C /lib/modules/3.8.0-19-generic/build M=/root/compat-wireless-3.6.2-1-snp modules make[1]: Entering directory `/usr/src/linux-headers-3.8.0-19-generic' CC [M] /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.o In file included from /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma.h:8:0, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:8, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8: /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma_driver_pci.h:217:23: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_core_pci_init’ In file included from /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma.h:10:0, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:8, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8: /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma_driver_gmac_cmn.h:95:23: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_core_gmac_cmn_init’ In file included from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8:0: /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:25:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_bus_register’ /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:152:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_bus_register’ /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:17:21: warning: ‘bcma_bus_next_num’ defined but not used [-Wunused-variable] /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:93:12: warning: ‘bcma_register_cores’ defined but not used [-Wunused-function] make[3]: *** [/root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.o] Error 1 make[2]: *** [/root/compat-wireless-3.6.2-1-snp/drivers/bcma] Error 2 make[1]: *** [_module_/root/compat-wireless-3.6.2-1-snp] Error 2 make[1]: Leaving directory `/usr/src/linux-headers-3.8.0-19-generic' make: *** [modules] Error 2 charles-W55xEU compat-wireless-3.6.2-1-snp # It keeps giving errors, same with other sites, I get the same errors??? I am lost, help needed

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  • sudo apt-get install mysql-server fails

    - by danwoods
    Hi all, I'm coming from a fresh install of Ubuntu server 9.10 and trying to install mysql-server by using 'sudo apt-get mysql-server' I get the following errors: dan@dev:~$ sudo apt-get install mysql-server [sudo] password for dan: Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: libdbd-mysql-perl libdbi-perl libhtml-template-perl libnet-daemon-perl libplrpc-perl mysql-client-5.1 mysql-server-5.1 Suggested packages: dbishell libipc-sharedcache-perl tinyca The following NEW packages will be installed: libdbd-mysql-perl libdbi-perl libhtml-template-perl libnet-daemon-perl libplrpc-perl mysql-client-5.1 mysql-server mysql-server-5.1 0 upgraded, 8 newly installed, 0 to remove and 0 not upgraded. Need to get 16.5MB of archives. After this operation, 39.0MB of additional disk space will be used. Do you want to continue [Y/n]? y Get:1 http://us.archive.ubuntu.com karmic/main libnet-daemon-perl 0.43-1 [46.9kB] Get:2 http://us.archive.ubuntu.com karmic/main libplrpc-perl 0.2020-2 [36.0kB] Get:3 http://us.archive.ubuntu.com karmic/main libdbi-perl 1.609-1 [800kB] Get:4 http://us.archive.ubuntu.com karmic/main libdbd-mysql-perl 4.011-1ubuntu1 [136kB] Get:5 http://us.archive.ubuntu.com karmic-updates/main mysql-client-5.1 5.1.37- 1ubuntu5.1 [8,202kB] Get:6 http://us.archive.ubuntu.com karmic-updates/main mysql-server-5.1 5.1.37-1ubuntu5.1 [7,186kB] Get:7 http://us.archive.ubuntu.com karmic/main libhtml-template-perl 2.9-1 [65.8kB] Get:8 http://us.archive.ubuntu.com karmic-updates/main mysql-server 5.1.37-1ubuntu5.1 [64.3kB] Fetched 16.5MB in 1min 34s (175kB/s) Preconfiguring packages ... Selecting previously deselected package libnet-daemon-perl. (Reading database ... 123083 files and directories currently installed.) Unpacking libnet-daemon-perl (from .../libnet-daemon-perl_0.43-1_all.deb) ... Selecting previously deselected package libplrpc-perl. Unpacking libplrpc-perl (from .../libplrpc-perl_0.2020-2_all.deb) ... Selecting previously deselected package libdbi-perl. Unpacking libdbi-perl (from .../libdbi-perl_1.609-1_i386.deb) ... Selecting previously deselected package libdbd-mysql-perl. Unpacking libdbd-mysql-perl (from .../libdbd-mysql-perl_4.011-1ubuntu1_i386.deb) ... Selecting previously deselected package mysql-client-5.1. Unpacking mysql-client-5.1 (from .../mysql-client-5.1_5.1.37-1ubuntu5.1_i386.deb) ... Selecting previously deselected package mysql-server-5.1. Unpacking mysql-server-5.1 (from .../mysql-server-5.1_5.1.37-1ubuntu5.1_i386.deb) ... Selecting previously deselected package libhtml-template-perl. Unpacking libhtml-template-perl (from .../libhtml-template-perl_2.9-1_all.deb) ... Selecting previously deselected package mysql-server. Unpacking mysql-server (from .../mysql-server_5.1.37-1ubuntu5.1_all.deb) ... Processing triggers for man-db ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot Setting up libnet-daemon-perl (0.43-1) ... Setting up libplrpc-perl (0.2020-2) ... Setting up libdbi-perl (1.609-1) ... Setting up libdbd-mysql-perl (4.011-1ubuntu1) ... Setting up mysql-client-5.1 (5.1.37-1ubuntu5.1) ... Setting up mysql-server-5.1 (5.1.37-1ubuntu5.1) ... * Stopping MySQL database server mysqld [ OK ] * Starting MySQL database server mysqld [fail] invoke-rc.d: initscript mysql, action "start" failed. dpkg: error processing mysql-server-5.1 (--configure): subprocess installed post-installation script returned error exit status 1 Setting up libhtml-template-perl (2.9-1) ... dpkg: dependency problems prevent configuration of mysql-server: mysql-server depends on mysql-server-5.1; however: Package mysql-server-5.1 is not configured yet. dpkg: error processing mysql-server (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: mysql-server-5.1 mysql-server E: Sub-process /usr/bin/dpkg returned an error code (1) What am I missing? [update] mysqld returns: dan@dev:~$ sudo mysqld [sudo] password for dan: 100220 12:18:17 [Note] Plugin 'FEDERATED' is disabled. InnoDB: Unable to lock ./ibdata1, error: 11 InnoDB: Check that you do not already have another mysqld process InnoDB: using the same InnoDB data or log files. 100220 12:18:17 InnoDB: Retrying to lock the first data file InnoDB: Unable to lock ./ibdata1, error: 11 InnoDB: Check that you do not already have another mysqld process This goes on for a while... InnoDB: Unable to lock ./ibdata1, error: 11 InnoDB: Check that you do not already have another mysqld process InnoDB: using the same InnoDB data or log files. ^[[BInnoDB: Unable to lock ./ibdata1, error: 11 InnoDB: Check that you do not already have another mysqld process InnoDB: using the same InnoDB data or log files. 100220 12:19:57 InnoDB: Unable to open the first data file InnoDB: Error in opening ./ibdata1 100220 12:19:57 InnoDB: Operating system error number 11 in a file operation. InnoDB: Error number 11 means 'Resource temporarily unavailable'. InnoDB: Some operating system error numbers are described at InnoDB: http://dev.mysql.com/doc/refman/5.1/en/operating-system-error-codes.html InnoDB: Could not open or create data files. InnoDB: If you tried to add new data files, and it failed here, InnoDB: you should now edit innodb_data_file_path in my.cnf back InnoDB: to what it was, and remove the new ibdata files InnoDB created InnoDB: in this failed attempt. InnoDB only wrote those files full of InnoDB: zeros, but did not yet use them in any way. But be careful: do not InnoDB: remove old data files which contain your precious data! 100220 12:19:57 [ERROR] Plugin 'InnoDB' init function returned error. 100220 12:19:57 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 100220 12:19:57 [ERROR] Can't start server: Bind on TCP/IP port: Address already in use 100220 12:19:57 [ERROR] Do you already have another mysqld server running on port: 3306 ? 100220 12:19:57 [ERROR] Aborting 100220 12:19:57 [Warning] Forcing shutdown of 1 plugins 100220 12:19:57 [Note] mysqld: Shutdown complete How can I check what process is using port: 3306? [Update]: sudo netstat -anp | grep LISTEN returns dan@dev:~$ sudo netstat -anp | grep LISTEN [sudo] password for dan: tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 1372/master tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 4391/mysqld tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1409/cupsd tcp6 0 0 ::1:631 :::* LISTEN 1409/cupsd [More Updates]: I can log into mysql if that makes a difference

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  • dpkg: warning: files list file for package 'x' missing

    - by Mark
    I get this warning for several packages every time I install any package or perform apt-get upgrade. Not sure what is causing it; it's a fresh Debian install on my OpenVZ server and I haven't changed any dpkg settings. Here's an example: root@debian:~# apt-get install cowsay Reading package lists... Done Building dependency tree Reading state information... Done Suggested packages: filters The following NEW packages will be installed: cowsay 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 21.9 kB of archives. After this operation, 91.1 kB of additional disk space will be used. Get:1 http://ftp.us.debian.org/debian/ unstable/main cowsay all 3.03+dfsg1-4 [21.9 kB] Fetched 21.9 kB in 0s (70.2 kB/s) Selecting previously unselected package cowsay. dpkg: warning: files list file for package 'libssh2-1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libkrb5-3:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libwrap0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libcap2:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libpam-ck-connector:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libc6:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libtalloc2:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libselinux1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libp11-kit0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libavahi-client3:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libbz2-1.0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libpcre3:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libgpm2:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libgnutls26:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libavahi-common3:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libcroco3:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'liblzma5:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libpaper1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libsensors4:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libbsd0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libavahi-common-data:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libss2:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libblkid1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libslang2:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libacl1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libcomerr2:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libkrb5support0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'e2fslibs:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'librtmp0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libidn11:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libpcap0.8:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libattr1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libdevmapper1.02.1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'odbcinst1debian2:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libexpat1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libltdl7:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libkeyutils1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libcups2:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libsqlite3-0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libck-connector0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'zlib1g:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libnl1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libfontconfig1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libudev0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libsepol1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libmagic1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libk5crypto3:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libunistring0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libgpg-error0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libusb-0.1-4:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libpam0g:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libpopt0:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libgssapi-krb5-2:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libgeoip1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libcurl3-gnutls:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libtasn1-3:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libuuid1:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libgcrypt11:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libgdbm3:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libdbus-1-3:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libsysfs2:amd64' missing; assuming package has no files currently installed dpkg: warning: files list file for package 'libfreetype6:amd64' missing; assuming package has no files currently installed (Reading database ... 21908 files and directories currently installed.) Unpacking cowsay (from .../cowsay_3.03+dfsg1-4_all.deb) ... Processing triggers for man-db ... Setting up cowsay (3.03+dfsg1-4) ... root@debian:~# Everything works fine, but these warning messages are pretty annoying. Does anyone know how I can fix this?

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  • A free standing ASP.NET Pager Web Control

    - by Rick Strahl
    Paging in ASP.NET has been relatively easy with stock controls supporting basic paging functionality. However, recently I built an MVC application and one of the things I ran into was that I HAD TO build manual paging support into a few of my pages. Dealing with list controls and rendering markup is easy enough, but doing paging is a little more involved. I ended up with a small but flexible component that can be dropped anywhere. As it turns out the task of creating a semi-generic Pager control for MVC was fairly easily. Now I’m back to working in Web Forms and thought to myself that the way I created the pager in MVC actually would also work in ASP.NET – in fact quite a bit easier since the whole thing can be conveniently wrapped up into an easily reusable control. A standalone pager would provider easier reuse in various pages and a more consistent pager display regardless of what kind of 'control’ the pager is associated with. Why a Pager Control? At first blush it might sound silly to create a new pager control – after all Web Forms has pretty decent paging support, doesn’t it? Well, sort of. Yes the GridView control has automatic paging built in and the ListView control has the related DataPager control. The built in ASP.NET paging has several issues though: Postback and JavaScript requirements If you look at paging links in ASP.NET they are always postback links with javascript:__doPostback() calls that go back to the server. While that works fine and actually has some benefit like the fact that paging saves changes to the page and post them back, it’s not very SEO friendly. Basically if you use javascript based navigation nosearch engine will follow the paging links which effectively cuts off list content on the first page. The DataPager control does support GET based links via the QueryStringParameter property, but the control is effectively tied to the ListView control (which is the only control that implements IPageableItemContainer). DataSource Controls required for Efficient Data Paging Retrieval The only way you can get paging to work efficiently where only the few records you display on the page are queried for and retrieved from the database you have to use a DataSource control - only the Linq and Entity DataSource controls  support this natively. While you can retrieve this data yourself manually, there’s no way to just assign the page number and render the pager based on this custom subset. Other than that default paging requires a full resultset for ASP.NET to filter the data and display only a subset which can be very resource intensive and wasteful if you’re dealing with largish resultsets (although I’m a firm believer in returning actually usable sets :-}). If you use your own business layer that doesn’t fit an ObjectDataSource you’re SOL. That’s a real shame too because with LINQ based querying it’s real easy to retrieve a subset of data that is just the data you want to display but the native Pager functionality doesn’t support just setting properties to display just the subset AFAIK. DataPager is not Free Standing The DataPager control is the closest thing to a decent Pager implementation that ASP.NET has, but alas it’s not a free standing component – it works off a related control and the only one that it effectively supports from the stock ASP.NET controls is the ListView control. This means you can’t use the same data pager formatting for a grid and a list view or vice versa and you’re always tied to the control. Paging Events In order to handle paging you have to deal with paging events. The events fire at specific time instances in the page pipeline and because of this you often have to handle data binding in a way to work around the paging events or else end up double binding your data sources based on paging. Yuk. Styling The GridView pager is a royal pain to beat into submission for styled rendering. The DataPager control has many more options and template layout and it renders somewhat cleaner, but it too is not exactly easy to get a decent display for. Not a Generic Solution The problem with the ASP.NET controls too is that it’s not generic. GridView, DataGrid use their own internal paging, ListView can use a DataPager and if you want to manually create data layout – well you’re on your own. IOW, depending on what you use you likely have very different looking Paging experiences. So, I figured I’ve struggled with this once too many and finally sat down and built a Pager control. The Pager Control My goal was to create a totally free standing control that has no dependencies on other controls and certainly no requirements for using DataSource controls. The idea is that you should be able to use this pager control without any sort of data requirements at all – you should just be able to set properties and be able to display a pager. The Pager control I ended up with has the following features: Completely free standing Pager control – no control or data dependencies Complete manual control – Pager can render without any data dependency Easy to use: Only need to set PageSize, ActivePage and TotalItems Supports optional filtering of IQueryable for efficient queries and Pager rendering Supports optional full set filtering of IEnumerable<T> and DataTable Page links are plain HTTP GET href Links Control automatically picks up Page links on the URL and assigns them (automatic page detection no page index changing events to hookup) Full CSS Styling support On the downside there’s no templating support for the control so the layout of the pager is relatively fixed. All elements however are stylable and there are options to control the text, and layout options such as whether to display first and last pages and the previous/next buttons and so on. To give you an idea what the pager looks like, here are two differently styled examples (all via CSS):   The markup for these two pagers looks like this: <ww:Pager runat="server" id="ItemPager" PageSize="5" PageLinkCssClass="gridpagerbutton" SelectedPageCssClass="gridpagerbutton-selected" PagesTextCssClass="gridpagertext" CssClass="gridpager" RenderContainerDiv="true" ContainerDivCssClass="gridpagercontainer" MaxPagesToDisplay="6" PagesText="Item Pages:" NextText="next" PreviousText="previous" /> <ww:Pager runat="server" id="ItemPager2" PageSize="5" RenderContainerDiv="true" MaxPagesToDisplay="6" /> The latter example uses default style settings so it there’s not much to set. The first example on the other hand explicitly assigns custom styles and overrides a few of the formatting options. Styling The styling is based on a number of CSS classes of which the the main pager, pagerbutton and pagerbutton-selected classes are the important ones. Other styles like pagerbutton-next/prev/first/last are based on the pagerbutton style. The default styling shown for the red outlined pager looks like this: .pagercontainer { margin: 20px 0; background: whitesmoke; padding: 5px; } .pager { float: right; font-size: 10pt; text-align: left; } .pagerbutton,.pagerbutton-selected,.pagertext { display: block; float: left; text-align: center; border: solid 2px maroon; min-width: 18px; margin-left: 3px; text-decoration: none; padding: 4px; } .pagerbutton-selected { font-size: 130%; font-weight: bold; color: maroon; border-width: 0px; background: khaki; } .pagerbutton-first { margin-right: 12px; } .pagerbutton-last,.pagerbutton-prev { margin-left: 12px; } .pagertext { border: none; margin-left: 30px; font-weight: bold; } .pagerbutton a { text-decoration: none; } .pagerbutton:hover { background-color: maroon; color: cornsilk; } .pagerbutton-prev { background-image: url(images/prev.png); background-position: 2px center; background-repeat: no-repeat; width: 35px; padding-left: 20px; } .pagerbutton-next { background-image: url(images/next.png); background-position: 40px center; background-repeat: no-repeat; width: 35px; padding-right: 20px; margin-right: 0px; } Yup that’s a lot of styling settings although not all of them are required. The key ones are pagerbutton, pager and pager selection. The others (which are implicitly created by the control based on the pagerbutton style) are for custom markup of the ‘special’ buttons. In my apps I tend to have two kinds of pages: Those that are associated with typical ‘grid’ displays that display purely tabular data and those that have a more looser list like layout. The two pagers shown above represent these two views and the pager and gridpager styles in my standard style sheet reflect these two styles. Configuring the Pager with Code Finally lets look at what it takes to hook up the pager. As mentioned in the highlights the Pager control is completely independent of other controls so if you just want to display a pager on its own it’s as simple as dropping the control and assigning the PageSize, ActivePage and either TotalPages or TotalItems. So for this markup: <ww:Pager runat="server" id="ItemPagerManual" PageSize="5" MaxPagesToDisplay="6" /> I can use code as simple as: ItemPagerManual.PageSize = 3; ItemPagerManual.ActivePage = 4;ItemPagerManual.TotalItems = 20; Note that ActivePage is not required - it will automatically use any Page=x query string value and assign it, although you can override it as I did above. TotalItems can be any value that you retrieve from a result set or manually assign as I did above. A more realistic scenario based on a LINQ to SQL IQueryable result is even easier. In this example, I have a UserControl that contains a ListView control that renders IQueryable data. I use a User Control here because there are different views the user can choose from with each view being a different user control. This incidentally also highlights one of the nice features of the pager: Because the pager is independent of the control I can put the pager on the host page instead of into each of the user controls. IOW, there’s only one Pager control, but there are potentially many user controls/listviews that hold the actual display data. The following code demonstrates how to use the Pager with an IQueryable that loads only the records it displays: protected voidPage_Load(objectsender, EventArgs e) {     Category = Request.Params["Category"] ?? string.Empty;     IQueryable<wws_Item> ItemList = ItemRepository.GetItemsByCategory(Category);     // Update the page and filter the list down     ItemList = ItemPager.FilterIQueryable<wws_Item>(ItemList); // Render user control with a list view Control ulItemList = LoadControl("~/usercontrols/" + App.Configuration.ItemListType + ".ascx"); ((IInventoryItemListControl)ulItemList).InventoryItemList = ItemList; phItemList.Controls.Add(ulItemList); // placeholder } The code uses a business object to retrieve Items by category as an IQueryable which means that the result is only an expression tree that hasn’t execute SQL yet and can be further filtered. I then pass this IQueryable to the FilterIQueryable() helper method of the control which does two main things: Filters the IQueryable to retrieve only the data displayed on the active page Sets the Totaltems property and calculates TotalPages on the Pager and that’s it! When the Pager renders it uses those values, plus the PageSize and ActivePage properties to render the Pager. In addition to IQueryable there are also filter methods for IEnumerable<T> and DataTable, but these versions just filter the data by removing rows/items from the entire already retrieved data. Output Generated and Paging Links The output generated creates pager links as plain href links. Here’s what the output looks like: <div id="ItemPager" class="pagercontainer"> <div class="pager"> <span class="pagertext">Pages: </span><a href="http://localhost/WestWindWebStore/itemlist.aspx?Page=1" class="pagerbutton" />1</a> <a href="http://localhost/WestWindWebStore/itemlist.aspx?Page=2" class="pagerbutton" />2</a> <a href="http://localhost/WestWindWebStore/itemlist.aspx?Page=3" class="pagerbutton" />3</a> <span class="pagerbutton-selected">4</span> <a href="http://localhost/WestWindWebStore/itemlist.aspx?Page=5" class="pagerbutton" />5</a> <a href="http://localhost/WestWindWebStore/itemlist.aspx?Page=6" class="pagerbutton" />6</a> <a href="http://localhost/WestWindWebStore/itemlist.aspx?Page=20" class="pagerbutton pagerbutton-last" />20</a>&nbsp;<a href="http://localhost/WestWindWebStore/itemlist.aspx?Page=3" class="pagerbutton pagerbutton-prev" />Prev</a>&nbsp;<a href="http://localhost/WestWindWebStore/itemlist.aspx?Page=5" class="pagerbutton pagerbutton-next" />Next</a></div> <br clear="all" /> </div> </div> The links point back to the current page and simply append a Page= page link into the page. When the page gets reloaded with the new page number the pager automatically detects the page number and automatically assigns the ActivePage property which results in the appropriate page to be displayed. The code shown in the previous section is all that’s needed to handle paging. Note that HTTP GET based paging is different than the Postback paging ASP.NET uses by default. Postback paging preserves modified page content when clicking on pager buttons, but this control will simply load a new page – no page preservation at this time. The advantage of not using Postback paging is that the URLs generated are plain HTML links that a search engine can follow where __doPostback() links are not. Pager with a Grid The pager also works in combination with grid controls so it’s easy to bypass the grid control’s paging features if desired. In the following example I use a gridView control and binds it to a DataTable result which is also filterable by the Pager control. The very basic plain vanilla ASP.NET grid markup looks like this: <div style="width: 600px; margin: 0 auto;padding: 20px; "> <asp:DataGrid runat="server" AutoGenerateColumns="True" ID="gdItems" CssClass="blackborder" style="width: 600px;"> <AlternatingItemStyle CssClass="gridalternate" /> <HeaderStyle CssClass="gridheader" /> </asp:DataGrid> <ww:Pager runat="server" ID="Pager" CssClass="gridpager" ContainerDivCssClass="gridpagercontainer" PageLinkCssClass="gridpagerbutton" SelectedPageCssClass="gridpagerbutton-selected" PageSize="8" RenderContainerDiv="true" MaxPagesToDisplay="6" /> </div> and looks like this when rendered: using custom set of CSS styles. The code behind for this code is also very simple: protected void Page_Load(object sender, EventArgs e) { string category = Request.Params["category"] ?? ""; busItem itemRep = WebStoreFactory.GetItem(); var items = itemRep.GetItemsByCategory(category) .Select(itm => new {Sku = itm.Sku, Description = itm.Description}); // run query into a DataTable for demonstration DataTable dt = itemRep.Converter.ToDataTable(items,"TItems"); // Remove all items not on the current page dt = Pager.FilterDataTable(dt,0); // bind and display gdItems.DataSource = dt; gdItems.DataBind(); } A little contrived I suppose since the list could already be bound from the list of elements, but this is to demonstrate that you can also bind against a DataTable if your business layer returns those. Unfortunately there’s no way to filter a DataReader as it’s a one way forward only reader and the reader is required by the DataSource to perform the bindings.  However, you can still use a DataReader as long as your business logic filters the data prior to rendering and provides a total item count (most likely as a second query). Control Creation The control itself is a pretty brute force ASP.NET control. Nothing clever about this other than some basic rendering logic and some simple calculations and update routines to determine which buttons need to be shown. You can take a look at the full code from the West Wind Web Toolkit’s Repository (note there are a few dependencies). To give you an idea how the control works here is the Render() method: /// <summary> /// overridden to handle custom pager rendering for runtime and design time /// </summary> /// <param name="writer"></param> protected override void Render(HtmlTextWriter writer) { base.Render(writer); if (TotalPages == 0 && TotalItems > 0) TotalPages = CalculateTotalPagesFromTotalItems(); if (DesignMode) TotalPages = 10; // don't render pager if there's only one page if (TotalPages < 2) return; if (RenderContainerDiv) { if (!string.IsNullOrEmpty(ContainerDivCssClass)) writer.AddAttribute("class", ContainerDivCssClass); writer.RenderBeginTag("div"); } // main pager wrapper writer.WriteBeginTag("div"); writer.AddAttribute("id", this.ClientID); if (!string.IsNullOrEmpty(CssClass)) writer.WriteAttribute("class", this.CssClass); writer.Write(HtmlTextWriter.TagRightChar + "\r\n"); // Pages Text writer.WriteBeginTag("span"); if (!string.IsNullOrEmpty(PagesTextCssClass)) writer.WriteAttribute("class", PagesTextCssClass); writer.Write(HtmlTextWriter.TagRightChar); writer.Write(this.PagesText); writer.WriteEndTag("span"); // if the base url is empty use the current URL FixupBaseUrl(); // set _startPage and _endPage ConfigurePagesToRender(); // write out first page link if (ShowFirstAndLastPageLinks && _startPage != 1) { writer.WriteBeginTag("a"); string pageUrl = StringUtils.SetUrlEncodedKey(BaseUrl, QueryStringPageField, (1).ToString()); writer.WriteAttribute("href", pageUrl); if (!string.IsNullOrEmpty(PageLinkCssClass)) writer.WriteAttribute("class", PageLinkCssClass + " " + PageLinkCssClass + "-first"); writer.Write(HtmlTextWriter.SelfClosingTagEnd); writer.Write("1"); writer.WriteEndTag("a"); writer.Write("&nbsp;"); } // write out all the page links for (int i = _startPage; i < _endPage + 1; i++) { if (i == ActivePage) { writer.WriteBeginTag("span"); if (!string.IsNullOrEmpty(SelectedPageCssClass)) writer.WriteAttribute("class", SelectedPageCssClass); writer.Write(HtmlTextWriter.TagRightChar); writer.Write(i.ToString()); writer.WriteEndTag("span"); } else { writer.WriteBeginTag("a"); string pageUrl = StringUtils.SetUrlEncodedKey(BaseUrl, QueryStringPageField, i.ToString()).TrimEnd('&'); writer.WriteAttribute("href", pageUrl); if (!string.IsNullOrEmpty(PageLinkCssClass)) writer.WriteAttribute("class", PageLinkCssClass); writer.Write(HtmlTextWriter.SelfClosingTagEnd); writer.Write(i.ToString()); writer.WriteEndTag("a"); } writer.Write("\r\n"); } // write out last page link if (ShowFirstAndLastPageLinks && _endPage < TotalPages) { writer.WriteBeginTag("a"); string pageUrl = StringUtils.SetUrlEncodedKey(BaseUrl, QueryStringPageField, TotalPages.ToString()); writer.WriteAttribute("href", pageUrl); if (!string.IsNullOrEmpty(PageLinkCssClass)) writer.WriteAttribute("class", PageLinkCssClass + " " + PageLinkCssClass + "-last"); writer.Write(HtmlTextWriter.SelfClosingTagEnd); writer.Write(TotalPages.ToString()); writer.WriteEndTag("a"); } // Previous link if (ShowPreviousNextLinks && !string.IsNullOrEmpty(PreviousText) && ActivePage > 1) { writer.Write("&nbsp;"); writer.WriteBeginTag("a"); string pageUrl = StringUtils.SetUrlEncodedKey(BaseUrl, QueryStringPageField, (ActivePage - 1).ToString()); writer.WriteAttribute("href", pageUrl); if (!string.IsNullOrEmpty(PageLinkCssClass)) writer.WriteAttribute("class", PageLinkCssClass + " " + PageLinkCssClass + "-prev"); writer.Write(HtmlTextWriter.SelfClosingTagEnd); writer.Write(PreviousText); writer.WriteEndTag("a"); } // Next link if (ShowPreviousNextLinks && !string.IsNullOrEmpty(NextText) && ActivePage < TotalPages) { writer.Write("&nbsp;"); writer.WriteBeginTag("a"); string pageUrl = StringUtils.SetUrlEncodedKey(BaseUrl, QueryStringPageField, (ActivePage + 1).ToString()); writer.WriteAttribute("href", pageUrl); if (!string.IsNullOrEmpty(PageLinkCssClass)) writer.WriteAttribute("class", PageLinkCssClass + " " + PageLinkCssClass + "-next"); writer.Write(HtmlTextWriter.SelfClosingTagEnd); writer.Write(NextText); writer.WriteEndTag("a"); } writer.WriteEndTag("div"); if (RenderContainerDiv) { if (RenderContainerDivBreak) writer.Write("<br clear=\"all\" />\r\n"); writer.WriteEndTag("div"); } } As I said pretty much brute force rendering based on the control’s property settings of which there are quite a few: You can also see the pager in the designer above. unfortunately the VS designer (both 2010 and 2008) fails to render the float: left CSS styles properly and starts wrapping after margins are applied in the special buttons. Not a big deal since VS does at least respect the spacing (the floated elements overlay). Then again I’m not using the designer anyway :-}. Filtering Data What makes the Pager easy to use is the filter methods built into the control. While this functionality is clearly not the most politically correct design choice as it violates separation of concerns, it’s very useful for typical pager operation. While I actually have filter methods that do something similar in my business layer, having it exposed on the control makes the control a lot more useful for typical databinding scenarios. Of course these methods are optional – if you have a business layer that can provide filtered page queries for you can use that instead and assign the TotalItems property manually. There are three filter method types available for IQueryable, IEnumerable and for DataTable which tend to be the most common use cases in my apps old and new. The IQueryable version is pretty simple as it can simply rely on on .Skip() and .Take() with LINQ: /// <summary> /// <summary> /// Queries the database for the ActivePage applied manually /// or from the Request["page"] variable. This routine /// figures out and sets TotalPages, ActivePage and /// returns a filtered subset IQueryable that contains /// only the items from the ActivePage. /// </summary> /// <param name="query"></param> /// <param name="activePage"> /// The page you want to display. Sets the ActivePage property when passed. /// Pass 0 or smaller to use ActivePage setting. /// </param> /// <returns></returns> public IQueryable<T> FilterIQueryable<T>(IQueryable<T> query, int activePage) where T : class, new() { ActivePage = activePage < 1 ? ActivePage : activePage; if (ActivePage < 1) ActivePage = 1; TotalItems = query.Count(); if (TotalItems <= PageSize) { ActivePage = 1; TotalPages = 1; return query; } int skip = ActivePage - 1; if (skip > 0) query = query.Skip(skip * PageSize); _TotalPages = CalculateTotalPagesFromTotalItems(); return query.Take(PageSize); } The IEnumerable<T> version simply  converts the IEnumerable to an IQuerable and calls back into this method for filtering. The DataTable version requires a little more work to manually parse and filter records (I didn’t want to add the Linq DataSetExtensions assembly just for this): /// <summary> /// Filters a data table for an ActivePage. /// /// Note: Modifies the data set permanently by remove DataRows /// </summary> /// <param name="dt">Full result DataTable</param> /// <param name="activePage">Page to display. 0 to use ActivePage property </param> /// <returns></returns> public DataTable FilterDataTable(DataTable dt, int activePage) { ActivePage = activePage < 1 ? ActivePage : activePage; if (ActivePage < 1) ActivePage = 1; TotalItems = dt.Rows.Count; if (TotalItems <= PageSize) { ActivePage = 1; TotalPages = 1; return dt; } int skip = ActivePage - 1; if (skip > 0) { for (int i = 0; i < skip * PageSize; i++ ) dt.Rows.RemoveAt(0); } while(dt.Rows.Count > PageSize) dt.Rows.RemoveAt(PageSize); return dt; } Using the Pager Control The pager as it is is a first cut I built a couple of weeks ago and since then have been tweaking a little as part of an internal project I’m working on. I’ve replaced a bunch of pagers on various older pages with this pager without any issues and have what now feels like a more consistent user interface where paging looks and feels the same across different controls. As a bonus I’m only loading the data from the database that I need to display a single page. With the preset class tags applied too adding a pager is now as easy as dropping the control and adding the style sheet for styling to be consistent – no fuss, no muss. Schweet. Hopefully some of you may find this as useful as I have or at least as a baseline to build ontop of… Resources The Pager is part of the West Wind Web & Ajax Toolkit Pager.cs Source Code (some toolkit dependencies) Westwind.css base stylesheet with .pager and .gridpager styles Pager Example Page © Rick Strahl, West Wind Technologies, 2005-2010Posted in ASP.NET  

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  • Tools and Utilities for the .NET Developer

    - by mbcrump
    Tweet this list! Add a link to my site to your bookmarks to quickly find this page again! Add me to twitter! This is a list of the tools/utilities that I use to do my job/hobby. I wanted this page to load fast and contain information that only you care about. If I have missed a tool that you like, feel free to contact me and I will add it to the list. Also, this list took a lot of time to complete. Please do not steal my work, if you like the page then please link back to my site. I will keep the links/information updated as new tools/utilities are created.  Windows/.NET Development – This is a list of tools that any Windows/.NET developer should have in his bag. I have used at some point in my career everything listed on this page and below is the tools worth keeping. Name Description License AnkhSVN Subversion support for Visual Studio. It also works with VS2010. Free Aurora XAML Designer One of the best XAML creation tools available. Has a ton of built in templates that you can copy/paste into VS2010. COST/Trial BeyondCompare Beyond Compare 3 is the ideal tool for comparing files and folders on your Windows or Linux system. Visualize changes in your code and carefully reconcile them. COST/Trial BuildIT Automated Task Tool Its main purpose is to automate tasks, whether it is the final packaging of a product, an automated daily build, maybe sending out a mailing list, even backing-up files. Free C Sharper for VB Convert VB to C#. COST CLRProfiler Analyze and improve the behavior of your .NET app. Free CodeRush Direct competitor to ReSharper, contains similar feature. This is one of those decide for yourself. COST/Trial Disk2VHD Disk2vhd is a utility that creates VHD (Virtual Hard Disk - Microsoft's Virtual Machine disk format) versions of physical disks for use in Microsoft Virtual PC or Microsoft Hyper-V virtual machines (VMs). Free Eazfuscator.NET Is a free obfuscator for .NET. The main purpose is to protect intellectual property of software. Free EQATEC Profiler Make your .NET app run faster. No source code changes are needed. Just point the profiler to your app, run the modified code, and get a visual report. COST Expression Studio 3/4 Comes with Web, Blend, Sketch Flow and more. You can create websites, produce beautiful XAML and more. COST/Trial Expresso The award-winning Expresso editor is equally suitable as a teaching tool for the beginning user of regular expressions or as a full-featured development environment for the experienced programmer or web designer with an extensive knowledge of regular expressions. Free Fiddler Fiddler is a web debugging proxy which logs all HTTP(s) traffic between your computer and the internet. Free Firebug Powerful Web development tool. If you build websites, you will need this. Free FxCop FxCop is an application that analyzes managed code assemblies (code that targets the .NET Framework common language runtime) and reports information about the assemblies, such as possible design, localization, performance, and security improvements. Free GAC Browser and Remover Easy way to remove multiple assemblies from the GAC. Assemblies registered by programs like Install Shield can also be removed. Free GAC Util The Global Assembly Cache tool allows you to view and manipulate the contents of the global assembly cache and download cache. Free HelpScribble Help Scribble is a full-featured, easy-to-use help authoring tool for creating help files from start to finish. You can create Win Help (.hlp) files, HTML Help (.chm) files, a printed manual and online documentation (on a web site) all from the same Help Scribble project. COST/Trial IETester IETester is a free Web Browser that allows you to have the rendering and JavaScript engines of IE9 preview, IE8, IE7 IE 6 and IE5.5 on Windows 7, Vista and XP, as well as the installed IE in the same process. Free iTextSharp iText# (iTextSharp) is a port of the iText open source java library for PDF generation written entirely in C# for the .NET platform. Use the iText mailing list to get support. Free Kaxaml Kaxaml is a lightweight XAML editor that gives you a "split view" so you can see both your XAML and your rendered content. Free LINQPad LinqPad lets you interactively query databases in a LINQ. Free Linquer Many programmers are familiar with SQL and will need a help in the transition to LINQ. Sometimes there are complicated queries to be written and Linqer can help by converting SQL scripts to LINQ. COST/Trial LiquidXML Liquid XML Studio 2010 is an advanced XML developers toolkit and IDE, containing all the tools needed for designing and developing XML schema and applications. COST/Trial Log4Net log4net is a tool to help the programmer output log statements to a variety of output targets. log4net is a port of the excellent log4j framework to the .NET runtime. We have kept the framework similar in spirit to the original log4j while taking advantage of new features in the .NET runtime. For more information on log4net see the features document. Free Microsoft Web Platform Installer The Microsoft Web Platform Installer 2.0 (Web PI) is a free tool that makes getting the latest components of the Microsoft Web Platform, including Internet Information Services (IIS), SQL Server Express, .NET Framework and Visual Web Developer easy. Free Mono Development Don't have Visual Studio - no problem! This is an open Source C# and .NET development environment for Linux, Windows, and Mac OS X Free Net Mass Downloader While it’s great that Microsoft has released the .NET Reference Source Code, you can only get it one file at a time while you’re debugging. If you’d like to batch download it for reading or to populate the cache, you’d have to write a program that instantiated and called each method in the Framework Class Library. Fortunately, .NET Mass Downloader comes to the rescue! Free nMap Nmap ("Network Mapper") is a free and open source (license) utility for network exploration or security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime. Free NoScript (Firefox add-in) The NoScript Firefox extension provides extra protection for Firefox, Flock, Seamonkey and other Mozilla-based browsers: this free, open source add-on allows JavaScript, Java and Flash and other plug-ins to be executed only by trusted web sites of your choice (e.g. your online bank), and provides the most powerful Anti-XSS protection available in a browser. Free NotePad 2 Notepad2, a fast and light-weight Notepad-like text editor with syntax highlighting. This program can be run out of the box without installation, and does not touch your system's registry. Free PageSpy PageSpy is a small add-on for Internet Explorer that allows you to select any element within a webpage, select an option in the context menu, and view detailed information about both the coding behind the page and the element you selected. Free Phrase Express PhraseExpress manages your frequently used text snippets in customizable categories for quick access. Free PowerGui PowerGui is a free community for PowerGUI, a graphical user interface and script editor for Microsoft Windows PowerShell! Free Powershell Comes with Win7, but you can automate tasks by using the .NET Framework. Great for network admins. Free Process Explorer Ever wondered which program has a particular file or directory open? Now you can find out. Process Explorer shows you information about which handles and DLLs processes have opened or loaded. Also, included in the SysInterals Suite. Free Process Monitor Process Monitor is an advanced monitoring tool for Windows that shows real-time file system, Registry and process/thread activity. Free Reflector Explore and analyze compiled .NET assemblies, viewing them in C#, Visual Basic, and IL. This is an Essential for any .NET developer. Free Regular Expression Library Stuck on a Regular Expression but you think someone has already figured it out? Chances are they have. Free Regulator Regulator makes Regular Expressions easy. This is a must have for a .NET Developer. Free RenameMaestro RenameMaestro is probably the easiest batch file renamer you'll find to instantly rename multiple files COST ReSharper The one program that I cannot live without. Supports VS2010 and offers simple refactoring, code analysis/assistance/cleanup/templates. One of the few applications that is worth the $$$. COST/Trial ScrewTurn Wiki ScrewTurn Wiki allows you to create, manage and share wikis. A wiki is a collaboratively-edited, information-centered website: the most famous is Wikipedia. Free SharpDevelop What is #develop? SharpDevelop is a free IDE for C# and VB.NET projects on Microsoft's .NET platform. Free Show Me The Template Show Me The Template is a tool for exploring the templates, be their data, control or items panel, that comes with the controls built into WPF for all 6 themes. Free SnippetCompiler Compiles code snippets without opening Visual Studio. It does not support .NET 4. Free SQL Prompt SQL Prompt is a plug-in that increases how fast you can work with SQL. It provides code-completion for SQL server, reformatting, db schema information and snippets. Awesome! COST/Trial SQLinForm SQLinForm is an automatic SQL code formatter for all major databases  including ORACLE, SQL Server, DB2, UDB, Sybase, Informix, PostgreSQL, Teradata, MySQL, MS Access etc. with over 70 formatting options. COST/OnlineFree SSMS Tools SSMS Tools Pack is an add-in for Microsoft SQL Server Management Studio (SSMS) including SSMS Express. Free Storm STORM is a free and open source tool for testing web services. Free Telerik Code Convertor Convert code from VB to C Sharp and Vice Versa. Free TurtoiseSVN TortoiseSVN is a really easy to use Revision control / version control / source control software for Windows.Since it's not an integration for a specific IDE you can use it with whatever development tools you like. Free UltraEdit UltraEdit is the ideal text, HTML and hex editor, and an advanced PHP, Perl, Java and JavaScript editor for programmers. UltraEdit is also an XML editor including a tree-style XML parser. An industry-award winner, UltraEdit supports disk-based 64-bit file handling (standard) on 32-bit Windows platforms (Windows 2000 and later). COST/Trial Virtual Windows XP Comes with some W7 version and allows you to run WinXP along side W7. Free VirtualBox Virtualization by Sun Microsystems. You can virtualize Windows, Linux and more. Free Visual Log Parser SQL queries against a variety of log files and other system data sources. Free WinMerge WinMerge is an Open Source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is easy to understand and handle. Free Wireshark Wireshark is one of the best network protocol analyzer's for Unix and windows. This has been used several times to get me out of a bind. Free XML Notepad 07 Old, but still one of my favorite XML viewers. Free Productivity Tools – This is the list of tools that I use to save time or quickly navigate around Windows. Name Description License AutoHotKey Automate almost anything by sending keystrokes and mouse clicks. You can write a mouse or keyboard macro by hand or use the macro recorder. Free CLCL CLCL is clipboard caching utility. Free Ditto Ditto is an extension to the standard windows clipboard. It saves each item placed on the clipboard allowing you access to any of those items at a later time. Ditto allows you to save any type of information that can be put on the clipboard, text, images, html, custom formats, ..... Free Evernote Remember everything from notes to photos. It will synch between computers/devices. Free InfoRapid Inforapid is a search tool that will display all you search results in a html like browser. If you click on a word in that browser, it will start another search to the word you clicked on. Handy if you want to trackback something to it's true origin. The word you looked for will be highlighted in red. Clicking on the red word will open the containing file in a text based viewer. Clicking on any word in the opened document will start another search on that word. Free KatMouse The prime purpose of the KatMouse utility is to enhance the functionality of mice with a scroll wheel, offering 'universal' scrolling: moving the mouse wheel will scroll the window directly beneath the mouse cursor (not the one with the keyboard focus, which is default on Windows OSes). This is a major increase in the usefulness of the mouse wheel. Free ScreenR Instant Screencast with nothing to download. Works with Mac or PC and free. Free Start++ Start++ is an enhancement for the Start Menu in Windows Vista. It also extends the Run box and the command-line with customizable commands.  For example, typing "w Windows Vista" will take you to the Windows Vista page on Wikipedia! Free Synergy Synergy lets you easily share a single mouse and keyboard between multiple computers with different operating systems, each with its own display, without special hardware. It's intended for users with multiple computers on their desk since each system uses its own monitor(s). Free Texter Texter lets you define text substitution hot strings that, when triggered, will replace hotstring with a larger piece of text. By entering your most commonly-typed snippets of text into Texter, you can save countless keystrokes in the course of the day. Free Total Commander File handling, FTP, Archive handling and much more. Even works with Win3.11. COST/Trial Available Wizmouse WizMouse is a mouse enhancement utility that makes your mouse wheel work on the window currently under the mouse pointer, instead of the currently focused window. This means you no longer have to click on a window before being able to scroll it with the mouse wheel. This is a far more comfortable and practical way to make use of the mouse wheel. Free Xmarks Bookmark sync and search between computers. Free General Utilities – This is a list for power user users or anyone that wants more out of Windows. I usually install a majority of these whenever I get a new system. Name Description License µTorrent µTorrent is a lightweight and efficient BitTorrent client for Windows or Mac with many features. I use this for downloading LEGAL media. Free Audacity Audacity® is free, open source software for recording and editing sounds. It is available for Mac OS X, Microsoft Windows, GNU/Linux, and other operating systems. Learn more about Audacity... Also check our Wiki and Forum for more information. Free AVast Free FREE Antivirus. Free CD Burner XP Pro CDBurnerXP is a free application to burn CDs and DVDs, including Blu-Ray and HD-DVDs. It also includes the feature to burn and create ISOs, as well as a multilanguage interface. Free CDEX You can extract digital audio CDs into mp3/wav. Free Combofix Combofix is a freeware (a legitimate spyware remover created by sUBs), Combofix was designed to scan a computer for known malware, spyware (SurfSideKick, QooLogic, and Look2Me as well as any other combination of the mentioned spyware applications) and remove them. Free Cpu-Z Provides information about some of the main devices of your system. Free Cropper Cropper is a screen capture utility written in C#. It makes it fast and easy to grab parts of your screen. Use it to easily crop out sections of vector graphic files such as Fireworks without having to flatten the files or open in a new editor. Use it to easily capture parts of a web site, including text and images. It's also great for writing documentation that needs images of your application or web site. Free DropBox Drag and Drop files to sync between computers. Free DVD-Fab Converts/Copies DVDs/Blu-Ray to different formats. (like mp4, mkv, avi) COST/Trial Available FastStone Capture FastStone Capture is a powerful, lightweight, yet full-featured screen capture tool that allows you to easily capture and annotate anything on the screen including windows, objects, menus, full screen, rectangular/freehand regions and even scrolling windows/web pages. Free ffdshow FFDShow is a DirectShow decoding filter for decompressing DivX, XviD, H.264, FLV1, WMV, MPEG-1 and MPEG-2, MPEG-4 movies. Free Filezilla FileZilla Client is a fast and reliable cross-platform FTP, FTPS and SFTP client with lots of useful features and an intuitive graphical user interface. You can also download a server version. Free FireFox Web Browser, do you really need an explanation? Free FireGestures A customizable mouse gestures extension which enables you to execute various commands and user scripts with five types of gestures. Free FoxIt Reader Light weight PDF viewer. You should install this with the advanced setting or it will install a toolbar and setup some shortcuts. Free gSynchIt Synch Gmail and Outlook. Even supports Outlook 2010 32/64 bit COST/Trial Available Hulu Desktop At home or in a hotel, this has replaced my cable/satellite subscription. Free ImgBurn ImgBurn is a lightweight CD / DVD / HD DVD / Blu-ray burning application that everyone should have in their toolkit! Free Infrarecorder InfraRecorder is a free CD/DVD burning solution for Microsoft Windows. It offers a wide range of powerful features; all through an easy to use application interface and Windows Explorer integration. Free KeePass KeePass is a free open source password manager, which helps you to manage your passwords in a secure way. Free LastPass Another password management, synchronize between browsers, automatic form filling and more. Free Live Essentials One download and lots of programs including Mail, Live Writer, Movie Maker and more! Free Monitores MonitorES is a small windows utility that helps you to turnoff monitor display when you lock down your machine.Also when you lock your machine, it will pause all your running media programs & set your IM status message to "Away" / Custom message(via options) and restore it back to normal when you back. Free mRemote mRemote is a full-featured, multi-tab remote connections manager. Free Open Office OpenOffice.org 3 is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more. It is available in many languages and works on all common computers. It stores all your data in an international open standard format and can also read and write files from other common office software packages. It can be downloaded and used completely free of charge for any purpose. Free Paint.NET Simple, intuitive, and innovative user interface for editing photos. Free Picasa Picasa is free photo editing software from Google that makes your pictures look great. Free Pidgin Pidgin is an easy to use and free chat client used by millions. Connect to AIM, MSN, Yahoo, and more chat networks all at once. Free PING PING is a live Linux ISO, based on the excellent Linux From Scratch (LFS) documentation. It can be burnt on a CD and booted, or integrated into a PXE / RIS environment. Free Putty PuTTY is an SSH and telnet client, developed originally by Simon Tatham for the Windows platform. Free Revo Uninstaller Revo Uninstaller Pro helps you to uninstall software and remove unwanted programs installed on your computer easily! Even if you have problems uninstalling and cannot uninstall them from "Windows Add or Remove Programs" control panel applet.Revo Uninstaller is a much faster and more powerful alternative to "Windows Add or Remove Programs" applet! It has very powerful features to uninstall and remove programs. Free Security Essentials Microsoft Security Essentials is a new, free consumer anti-malware solution for your computer. Free SetupVirtualCloneDrive Virtual CloneDrive works and behaves just like a physical CD/DVD drive, however it exists only virtually. Point to the .ISO file and it appears in Windows Explorer as a Drive. Free Shark 007 Codec Pack Play just about any file format with this download. Also includes my W7 Media Playlist Generator. Free Snagit 9 Screen Capture on steroids. Add arrows, captions, etc to any screenshot. COST/Trial Available SysinternalsSuite Go ahead and download the entire sys internals suite. I have mentioned multiple programs in this suite already. Free TeraCopy TeraCopy is a compact program designed to copy and move files at the maximum possible speed, providing the user with a lot of features. Free for Home TrueCrypt Free open-source disk encryption software for Windows 7/Vista/XP, Mac OS X, and Linux Free TweetDeck Fully featured Twitter client. Free UltraVNC UltraVNC is a powerful, easy to use and free software that can display the screen of another computer (via internet or network) on your own screen. The program allows you to use your mouse and keyboard to control the other PC remotely. It means that you can work on a remote computer, as if you were sitting in front of it, right from your current location. Free Unlocker Unlocks locked files. Pretty simple right? Free VLC Media Player VLC media player is a highly portable multimedia player and multimedia framework capable of reading most audio and video formats Free Windows 7 Media Playlist This program is special to my heart because I wrote it. It has been mentioned on podcast and various websites. It allows you to quickly create wvx video playlist for Windows Media Center. Free WinRAR WinRAR is a powerful archive manager. It can backup your data and reduce the size of email attachments, decompress RAR, ZIP and other files downloaded from Internet and create new archives in RAR and ZIP file format. COST/Trial Available Blogging – I use the following for my blog. Name Description License Insert Code for Windows Live Writer Insert Code for Windows Live Writer will format a snippet of text in a number of programming languages such as C#, HTML, MSH, JavaScript, Visual Basic and TSQL. Free LiveWriter Included in Live Essentials, but the ultimate in Windows Blogging Free PasteAsVSCode Plug-in for Windows Live Writer that pastes clipboard content as Visual Studio code. Preserves syntax highlighting, indentation and background color. Converts RTF, outputted by Visual Studio, into HTML. Free Desktop Management – The list below represent the best in Windows Desktop Management. Name Description License 7 Stacks Allows users to have "stacks" of icons in their taskbar. Free Executor Executor is a multi purpose launcher and a more advanced and customizable version of windows run. Free Fences Fences is a program that helps you organize your desktop and can hide your icons when they are not in use. Free RocketDock Rocket Dock is a smoothly animated, alpha blended application launcher. It provides a nice clean interface to drop shortcuts on for easy access and organization. With each item completely customizable there is no end to what you can add and launch from the dock. Free WindowsTab Tabbing is an essential feature of modern web browsers. Window Tabs brings the productivity of tabbed window management to all of your desktop applications. Free

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  • VS 2010 SP1 and SQL CE

    - by ScottGu
    Last month we released the Beta of VS 2010 Service Pack 1 (SP1).  You can learn more about the VS 2010 SP1 Beta from Jason Zander’s two blog posts about it, and from Scott Hanselman’s blog post that covers some of the new capabilities enabled with it.   You can download and install the VS 2010 SP1 Beta here. Last week I blogged about the new Visual Studio support for IIS Express that we are adding with VS 2010 SP1. In today’s post I’m going to talk about the new VS 2010 SP1 tooling support for SQL CE, and walkthrough some of the cool scenarios it enables.  SQL CE – What is it and why should you care? SQL CE is a free, embedded, database engine that enables easy database storage. No Database Installation Required SQL CE does not require you to run a setup or install a database server in order to use it.  You can simply copy the SQL CE binaries into the \bin directory of your ASP.NET application, and then your web application can use it as a database engine.  No setup or extra security permissions are required for it to run. You do not need to have an administrator account on the machine. Just copy your web application onto any server and it will work. This is true even of medium-trust applications running in a web hosting environment. SQL CE runs in-memory within your ASP.NET application and will start-up when you first access a SQL CE database, and will automatically shutdown when your application is unloaded.  SQL CE databases are stored as files that live within the \App_Data folder of your ASP.NET Applications. Works with Existing Data APIs SQL CE 4 works with existing .NET-based data APIs, and supports a SQL Server compatible query syntax.  This means you can use existing data APIs like ADO.NET, as well as use higher-level ORMs like Entity Framework and NHibernate with SQL CE.  This enables you to use the same data programming skills and data APIs you know today. Supports Development, Testing and Production Scenarios SQL CE can be used for development scenarios, testing scenarios, and light production usage scenarios.  With the SQL CE 4 release we’ve done the engineering work to ensure that SQL CE won’t crash or deadlock when used in a multi-threaded server scenario (like ASP.NET).  This is a big change from previous releases of SQL CE – which were designed for client-only scenarios and which explicitly blocked running in web-server environments.  Starting with SQL CE 4 you can use it in a web-server as well. There are no license restrictions with SQL CE.  It is also totally free. Easy Migration to SQL Server SQL CE is an embedded database – which makes it ideal for development, testing, and light-usage scenarios.  For high-volume sites and applications you’ll probably want to migrate your database to use SQL Server Express (which is free), SQL Server or SQL Azure.  These servers enable much better scalability, more development features (including features like Stored Procedures – which aren’t supported with SQL CE), as well as more advanced data management capabilities. We’ll ship migration tools that enable you to optionally take SQL CE databases and easily upgrade them to use SQL Server Express, SQL Server, or SQL Azure.  You will not need to change your code when upgrading a SQL CE database to SQL Server or SQL Azure.  Our goal is to enable you to be able to simply change the database connection string in your web.config file and have your application just work. New Tooling Support for SQL CE in VS 2010 SP1 VS 2010 SP1 includes much improved tooling support for SQL CE, and adds support for using SQL CE within ASP.NET projects for the first time.  With VS 2010 SP1 you can now: Create new SQL CE Databases Edit and Modify SQL CE Database Schema and Indexes Populate SQL CE Databases within Data Use the Entity Framework (EF) designer to create model layers against SQL CE databases Use EF Code First to define model layers in code, then create a SQL CE database from them, and optionally edit the DB with VS Deploy SQL CE databases to remote servers using Web Deploy and optionally convert them to full SQL Server databases You can take advantage of all of the above features from within both ASP.NET Web Forms and ASP.NET MVC based projects. Download You can enable SQL CE tooling support within VS 2010 by first installing VS 2010 SP1 (beta). Once SP1 is installed, you’ll also then need to install the SQL CE Tools for Visual Studio download.  This is a separate download that enables the SQL CE tooling support for VS 2010 SP1. Walkthrough of Two Scenarios In this blog post I’m going to walkthrough how you can take advantage of SQL CE and VS 2010 SP1 using both an ASP.NET Web Forms and an ASP.NET MVC based application. Specifically, we’ll walkthrough: How to create a SQL CE database using VS 2010 SP1, then use the EF4 visual designers in Visual Studio to construct a model layer from it, and then display and edit the data using an ASP.NET GridView control. How to use an EF Code First approach to define a model layer using POCO classes and then have EF Code-First “auto-create” a SQL CE database for us based on our model classes.  We’ll then look at how we can use the new VS 2010 SP1 support for SQL CE to inspect the database that was created, populate it with data, and later make schema changes to it.  We’ll do all this within the context of an ASP.NET MVC based application. You can follow the two walkthroughs below on your own machine by installing VS 2010 SP1 (beta) and then installing the SQL CE Tools for Visual Studio download (which is a separate download that enables SQL CE tooling support for VS 2010 SP1). Walkthrough 1: Create a SQL CE Database, Create EF Model Classes, Edit the Data with a GridView This first walkthrough will demonstrate how to create and define a SQL CE database within an ASP.NET Web Form application.  We’ll then build an EF model layer for it and use that model layer to enable data editing scenarios with an <asp:GridView> control. Step 1: Create a new ASP.NET Web Forms Project We’ll begin by using the File->New Project menu command within Visual Studio to create a new ASP.NET Web Forms project.  We’ll use the “ASP.NET Web Application” project template option so that it has a default UI skin implemented: Step 2: Create a SQL CE Database Right click on the “App_Data” folder within the created project and choose the “Add->New Item” menu command: This will bring up the “Add Item” dialog box.  Select the “SQL Server Compact 4.0 Local Database” item (new in VS 2010 SP1) and name the database file to create “Store.sdf”: Note that SQL CE database files have a .sdf filename extension. Place them within the /App_Data folder of your ASP.NET application to enable easy deployment. When we clicked the “Add” button above a Store.sdf file was added to our project: Step 3: Adding a “Products” Table Double-clicking the “Store.sdf” database file will open it up within the Server Explorer tab.  Since it is a new database there are no tables within it: Right click on the “Tables” icon and choose the “Create Table” menu command to create a new database table.  We’ll name the new table “Products” and add 4 columns to it.  We’ll mark the first column as a primary key (and make it an identify column so that its value will automatically increment with each new row): When we click “ok” our new Products table will be created in the SQL CE database. Step 4: Populate with Data Once our Products table is created it will show up within the Server Explorer.  We can right-click it and choose the “Show Table Data” menu command to edit its data: Let’s add a few sample rows of data to it: Step 5: Create an EF Model Layer We have a SQL CE database with some data in it – let’s now create an EF Model Layer that will provide a way for us to easily query and update data within it. Let’s right-click on our project and choose the “Add->New Item” menu command.  This will bring up the “Add New Item” dialog – select the “ADO.NET Entity Data Model” item within it and name it “Store.edmx” This will add a new Store.edmx item to our solution explorer and launch a wizard that allows us to quickly create an EF model: Select the “Generate From Database” option above and click next.  Choose to use the Store.sdf SQL CE database we just created and then click next again.  The wizard will then ask you what database objects you want to import into your model.  Let’s choose to import the “Products” table we created earlier: When we click the “Finish” button Visual Studio will open up the EF designer.  It will have a Product entity already on it that maps to the “Products” table within our SQL CE database: The VS 2010 SP1 EF designer works exactly the same with SQL CE as it does already with SQL Server and SQL Express.  The Product entity above will be persisted as a class (called “Product”) that we can programmatically work against within our ASP.NET application. Step 6: Compile the Project Before using your model layer you’ll need to build your project.  Do a Ctrl+Shift+B to compile the project, or use the Build->Build Solution menu command. Step 7: Create a Page that Uses our EF Model Layer Let’s now create a simple ASP.NET Web Form that contains a GridView control that we can use to display and edit the our Products data (via the EF Model Layer we just created). Right-click on the project and choose the Add->New Item command.  Select the “Web Form from Master Page” item template, and name the page you create “Products.aspx”.  Base the master page on the “Site.Master” template that is in the root of the project. Add an <h2>Products</h2> heading the new Page, and add an <asp:gridview> control within it: Then click the “Design” tab to switch into design-view. Select the GridView control, and then click the top-right corner to display the GridView’s “Smart Tasks” UI: Choose the “New data source…” drop down option above.  This will bring up the below dialog which allows you to pick your Data Source type: Select the “Entity” data source option – which will allow us to easily connect our GridView to the EF model layer we created earlier.  This will bring up another dialog that allows us to pick our model layer: Select the “StoreEntities” option in the dropdown – which is the EF model layer we created earlier.  Then click next – which will allow us to pick which entity within it we want to bind to: Select the “Products” entity in the above dialog – which indicates that we want to bind against the “Product” entity class we defined earlier.  Then click the “Enable automatic updates” checkbox to ensure that we can both query and update Products.  When you click “Finish” VS will wire-up an <asp:EntityDataSource> to your <asp:GridView> control: The last two steps we’ll do will be to click the “Enable Editing” checkbox on the Grid (which will cause the Grid to display an “Edit” link on each row) and (optionally) use the Auto Format dialog to pick a UI template for the Grid. Step 8: Run the Application Let’s now run our application and browse to the /Products.aspx page that contains our GridView.  When we do so we’ll see a Grid UI of the Products within our SQL CE database. Clicking the “Edit” link for any of the rows will allow us to edit their values: When we click “Update” the GridView will post back the values, persist them through our EF Model Layer, and ultimately save them within our SQL CE database. Learn More about using EF with ASP.NET Web Forms Read this tutorial series on the http://asp.net site to learn more about how to use EF with ASP.NET Web Forms.  The tutorial series uses SQL Express as the database – but the nice thing is that all of the same steps/concepts can also now also be done with SQL CE.   Walkthrough 2: Using EF Code-First with SQL CE and ASP.NET MVC 3 We used a database-first approach with the sample above – where we first created the database, and then used the EF designer to create model classes from the database.  In addition to supporting a designer-based development workflow, EF also enables a more code-centric option which we call “code first development”.  Code-First Development enables a pretty sweet development workflow.  It enables you to: Define your model objects by simply writing “plain old classes” with no base classes or visual designer required Use a “convention over configuration” approach that enables database persistence without explicitly configuring anything Optionally override the convention-based persistence and use a fluent code API to fully customize the persistence mapping Optionally auto-create a database based on the model classes you define – allowing you to start from code first I’ve done several blog posts about EF Code First in the past – I really think it is great.  The good news is that it also works very well with SQL CE. The combination of SQL CE, EF Code First, and the new VS tooling support for SQL CE, enables a pretty nice workflow.  Below is a simple example of how you can use them to build a simple ASP.NET MVC 3 application. Step 1: Create a new ASP.NET MVC 3 Project We’ll begin by using the File->New Project menu command within Visual Studio to create a new ASP.NET MVC 3 project.  We’ll use the “Internet Project” template so that it has a default UI skin implemented: Step 2: Use NuGet to Install EFCodeFirst Next we’ll use the NuGet package manager (automatically installed by ASP.NET MVC 3) to add the EFCodeFirst library to our project.  We’ll use the Package Manager command shell to do this.  Bring up the package manager console within Visual Studio by selecting the View->Other Windows->Package Manager Console menu command.  Then type: install-package EFCodeFirst within the package manager console to download the EFCodeFirst library and have it be added to our project: When we enter the above command, the EFCodeFirst library will be downloaded and added to our application: Step 3: Build Some Model Classes Using a “code first” based development workflow, we will create our model classes first (even before we have a database).  We create these model classes by writing code. For this sample, we will right click on the “Models” folder of our project and add the below three classes to our project: The “Dinner” and “RSVP” model classes above are “plain old CLR objects” (aka POCO).  They do not need to derive from any base classes or implement any interfaces, and the properties they expose are standard .NET data-types.  No data persistence attributes or data code has been added to them.   The “NerdDinners” class derives from the DbContext class (which is supplied by EFCodeFirst) and handles the retrieval/persistence of our Dinner and RSVP instances from a database. Step 4: Listing Dinners We’ve written all of the code necessary to implement our model layer for this simple project.  Let’s now expose and implement the URL: /Dinners/Upcoming within our project.  We’ll use it to list upcoming dinners that happen in the future. We’ll do this by right-clicking on our “Controllers” folder and select the “Add->Controller” menu command.  We’ll name the Controller we want to create “DinnersController”.  We’ll then implement an “Upcoming” action method within it that lists upcoming dinners using our model layer above.  We will use a LINQ query to retrieve the data and pass it to a View to render with the code below: We’ll then right-click within our Upcoming method and choose the “Add-View” menu command to create an “Upcoming” view template that displays our dinners.  We’ll use the “empty” template option within the “Add View” dialog and write the below view template using Razor: Step 4: Configure our Project to use a SQL CE Database We have finished writing all of our code – our last step will be to configure a database connection-string to use. We will point our NerdDinners model class to a SQL CE database by adding the below <connectionString> to the web.config file at the top of our project: EF Code First uses a default convention where context classes will look for a connection-string that matches the DbContext class name.  Because we created a “NerdDinners” class earlier, we’ve also named our connectionstring “NerdDinners”.  Above we are configuring our connection-string to use SQL CE as the database, and telling it that our SQL CE database file will live within the \App_Data directory of our ASP.NET project. Step 5: Running our Application Now that we’ve built our application, let’s run it! We’ll browse to the /Dinners/Upcoming URL – doing so will display an empty list of upcoming dinners: You might ask – but where did it query to get the dinners from? We didn’t explicitly create a database?!? One of the cool features that EF Code-First supports is the ability to automatically create a database (based on the schema of our model classes) when the database we point it at doesn’t exist.  Above we configured  EF Code-First to point at a SQL CE database in the \App_Data\ directory of our project.  When we ran our application, EF Code-First saw that the SQL CE database didn’t exist and automatically created it for us. Step 6: Using VS 2010 SP1 to Explore our newly created SQL CE Database Click the “Show all Files” icon within the Solution Explorer and you’ll see the “NerdDinners.sdf” SQL CE database file that was automatically created for us by EF code-first within the \App_Data\ folder: We can optionally right-click on the file and “Include in Project" to add it to our solution: We can also double-click the file (regardless of whether it is added to the project) and VS 2010 SP1 will open it as a database we can edit within the “Server Explorer” tab of the IDE. Below is the view we get when we double-click our NerdDinners.sdf SQL CE file.  We can drill in to see the schema of the Dinners and RSVPs tables in the tree explorer.  Notice how two tables - Dinners and RSVPs – were automatically created for us within our SQL CE database.  This was done by EF Code First when we accessed the NerdDinners class by running our application above: We can right-click on a Table and use the “Show Table Data” command to enter some upcoming dinners in our database: We’ll use the built-in editor that VS 2010 SP1 supports to populate our table data below: And now when we hit “refresh” on the /Dinners/Upcoming URL within our browser we’ll see some upcoming dinners show up: Step 7: Changing our Model and Database Schema Let’s now modify the schema of our model layer and database, and walkthrough one way that the new VS 2010 SP1 Tooling support for SQL CE can make this easier.  With EF Code-First you typically start making database changes by modifying the model classes.  For example, let’s add an additional string property called “UrlLink” to our “Dinner” class.  We’ll use this to point to a link for more information about the event: Now when we re-run our project, and visit the /Dinners/Upcoming URL we’ll see an error thrown: We are seeing this error because EF Code-First automatically created our database, and by default when it does this it adds a table that helps tracks whether the schema of our database is in sync with our model classes.  EF Code-First helpfully throws an error when they become out of sync – making it easier to track down issues at development time that you might otherwise only find (via obscure errors) at runtime.  Note that if you do not want this feature you can turn it off by changing the default conventions of your DbContext class (in this case our NerdDinners class) to not track the schema version. Our model classes and database schema are out of sync in the above example – so how do we fix this?  There are two approaches you can use today: Delete the database and have EF Code First automatically re-create the database based on the new model class schema (losing the data within the existing DB) Modify the schema of the existing database to make it in sync with the model classes (keeping/migrating the data within the existing DB) There are a couple of ways you can do the second approach above.  Below I’m going to show how you can take advantage of the new VS 2010 SP1 Tooling support for SQL CE to use a database schema tool to modify our database structure.  We are also going to be supporting a “migrations” feature with EF in the future that will allow you to automate/script database schema migrations programmatically. Step 8: Modify our SQL CE Database Schema using VS 2010 SP1 The new SQL CE Tooling support within VS 2010 SP1 makes it easy to modify the schema of our existing SQL CE database.  To do this we’ll right-click on our “Dinners” table and choose the “Edit Table Schema” command: This will bring up the below “Edit Table” dialog.  We can rename, change or delete any of the existing columns in our table, or click at the bottom of the column listing and type to add a new column.  Below I’ve added a new “UrlLink” column of type “nvarchar” (since our property is a string): When we click ok our database will be updated to have the new column and our schema will now match our model classes. Because we are manually modifying our database schema, there is one additional step we need to take to let EF Code-First know that the database schema is in sync with our model classes.  As i mentioned earlier, when a database is automatically created by EF Code-First it adds a “EdmMetadata” table to the database to track schema versions (and hash our model classes against them to detect mismatches between our model classes and the database schema): Since we are manually updating and maintaining our database schema, we don’t need this table – and can just delete it: This will leave us with just the two tables that correspond to our model classes: And now when we re-run our /Dinners/Upcoming URL it will display the dinners correctly: One last touch we could do would be to update our view to check for the new UrlLink property and render a <a> link to it if an event has one: And now when we refresh our /Dinners/Upcoming we will see hyperlinks for the events that have a UrlLink stored in the database: Summary SQL CE provides a free, embedded, database engine that you can use to easily enable database storage.  With SQL CE 4 you can now take advantage of it within ASP.NET projects and applications (both Web Forms and MVC). VS 2010 SP1 provides tooling support that enables you to easily create, edit and modify SQL CE databases – as well as use the standard EF designer against them.  This allows you to re-use your existing skills and data knowledge while taking advantage of an embedded database option.  This is useful both for small applications (where you don’t need the scalability of a full SQL Server), as well as for development and testing scenarios – where you want to be able to rapidly develop/test your application without having a full database instance.  SQL CE makes it easy to later migrate your data to a full SQL Server or SQL Azure instance if you want to – without having to change any code in your application.  All we would need to change in the above two scenarios is the <connectionString> value within the web.config file in order to have our code run against a full SQL Server.  This provides the flexibility to scale up your application starting from a small embedded database solution as needed. Hope this helps, Scott P.S. In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu

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