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• passing paramter as to webservcie function in wcf

  - by prince23

  hi, this my datagrid event here i am calling the webservice. private void dgProject_RowDetailsVisibilityChanged(object sender, DataGridRowDetailsEventArgs e) { WSDataServiceClient wsService = new WSDataServiceClient(); wsService.GetProjectCompleted += new EventHandler<GetProjectCompletedEventArgs>(wsService_GetProjectCompleted); wsService.GetProjectAsync(strUniqueName); // here can i send datagrid as an parameter to the function? Datagrid gd= new Datagrid(); } void wsService_GetProjectCompleted(object sender, GetProjectCompletedEventArgs e) { // } is there any way that i can send datagrid as a paramter to this function is it possiable to do? beacuse i will be using the same websevice function her but need to bind result with different datagrid based on the condition if i can send a datagrid as paramter to this function i can reduce the code so any help on this issue would be great thank you.

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• How do I wrap a very long line of text in a GWT label?

  - by user323295

  This is an extract of my code at the moment: VerticalPanel mainPanel = new VerticalPanel(); RootPanel.get("messages").add(mainPanel); HorizontalPanel tempPanel = new HorizontalPanel(); tempPanel.setSize("100px", "200px"); Label content = new Label("AAAveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryverylongtextZZZ"); content.setWidth("50px"); content.setWordWrap(true); tempPanel.add(content); mainPanel.add(tempPanel); The label displays but it does not wrap. If I insert a space it seems that word wrap works, but I guess I want character wrap. Any ideas? I do not want a horizontal scrollbar.

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• How do i get a href value from a link within a ul li list

  - by Akk

  I have an unordered list such as: <ul id="cities"> <li><a href="/london/">London<a></li> <li><a href="/new-york/">New York<a></li> <li><a href="/paris/">Paris<a></li> <ul> using jquery how do i get the href value for "New York"? Only the anchor text value is known through the client so i would like to find the matching anchor text and extract the href. Thanks

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• Problem with incomplete type while trying to detect existence of a member function

  - by abir

  I was trying to detect existence of a member function for a class where the function tries to use an incomplete type. The typedef is struct foo; typedef std::allocator<foo> foo_alloc; The detection code is struct has_alloc { template<typename U,U x> struct dummy; template<typename U> static char check(dummy<void* (U::*)(std::size_t),&U::allocate>*); template<typename U> static char (&check(...))[2]; const static bool value = (sizeof(check<foo_alloc>(0)) == 1); }; So far I was using incomplete type foo with std::allocator without any error on VS2008. However when I replaced it with nearly an identical implementation as template<typename T> struct allocator { T* allocate(std::size_t n) { return (T*)operator new (sizeof(T)*n); } }; it gives an error saying that as T is incomplete type it has problem instantiating allocator<foo> because allocate uses sizeof. GCC 4.5 with std::allocator also gives the error, so it seems during detection process the class need to be completely instantiated, even when I am not using that function at all. What I was looking for is void* allocate(std::size_t) which is different from T* allocate(std::size_t). My questions are (I have three questions, but as they are correlated , so I thought it is better not to create three separate questions). Why MS std::allocator doesn't check for incomplete type foo while instantiating? Are they following any trick which can be implemented ? Why the compiler need to instantiate allocator<T> to check the existence of the function when sizeof is not used as sfinae mechanism to remove/add allocate in the overload resolutions set? It should be noted that, if I remove the generic implementation of allocate leaving the declaration only, and specialized it for foo afterwards such as struct foo{}; template< struct allocator { foo* allocate(std::size_t n) { return (foo*)operator new (sizeof(foo)*n); } }; after struct has_alloc it compiles in GCC 4.5 while gives error in VS2008 as allocator<T> is already instantiated and explicit specialization for allocator<foo> already defined. Is it legal to use nested types for an std::allocator of incomplete type such as typedef foo_alloc::pointer foo_pointer; ? Though it is practically working for me, I suspect the nested types such as pointer may depend on completeness of type it takes. It will be good to know if there is any possible way to typedef such types as foo_pointer where the type pointer depends on completeness of foo. NOTE : As the code is not copy paste from editor, it may have some syntax error. Will correct it if I find any. Also the codes (such as allocator) are not complete implementation, I simplified and typed only the portion which I think useful for this particular problem.

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• Function return type style

  - by JB

  I'm learning c++0x, at least the parts supported by the Visual C++ Express 2010 Beta. This is a question about style rather than how it works. Perhaps it's too early for style and good practice to have evolved yet for a standard that isn't even released yet... In c++0x you can define the return type of a method using - type at the end of the function instead of putting the type at the start. I believe this change in syntax is required due to lambdas and some use cases of the new decltype keyword, but you can use it anywhere as far as I know. // Old style int add1(int a, int b) { return a + b; } // New style return type auto add2(int a, int b) -> int { return a + b; } My question really then, is given that some functions will need to be defined in the new way is it considered good style to define all functions in this way for consistency? Or should I stick to only using it when necessary?

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• Problems reading text file data in Java

  - by user1828401

  I have this code: BufferedReader br =new BufferedReader(new FileReader("userdetails.txt")); String str; ArrayList<String> stringList = new ArrayList<String>(); while ((str=br.readLine())!=null){ String datavalue [] = str.split(","); String category = datavalue[0]; String value = datavalue[1]; stringList.add(category); stringList.add(value); } br.close(); it works when the variables category and value do not have a comma(,),however the values in the variable value does contain commas.Is there a way that I can split the index of the without using comma?

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• Looping in filemaker using a local variable

  - by Mike Davis

  Been programming in C# for a little bit - trying to use file maker and I cant believe it but I cant even get a simple for loop to work. What I want to do is simple: loop through for the amount of entries in my "amountOfRooms" field and create an entry in a table for each room. Sounds so simple, but I cant get it to work. Right now I have this: Set Variable[$cnt[Customers::AmountOfRooms]; value:1] Go to Layout["rooms"(Rooms)] Loop Exit Loop If[$cnt = Customers::AmountOfRooms] New Record / Request Set Variable[$cnt; Value: $cnt + 1] End Loop Exit Script No new records are created. I know the script is running because it does go to my layout, but doesnt create any new records. There is a "Repetition" field for my local variable - not sure how to use that or what it means? Any thoughts on how to do this simple loop? Thanks.

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• Update query in ado.net

  - by nikhil

  I wanted to update a column in my table, i have written the code it runs fine without any error also it displays the confirmation dialog box but the table is not updated whats wrong with the code. Dim sqlConn As New SqlClient.SqlConnection sqlConn.ConnectionString = "Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\housingsociety.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True" Try sqlConn.Open() Catch sqlError As Exception MsgBox(sqlError.Message, 0, "Connection Error!") End Try Dim sqlComm As New SqlClient.SqlCommand sqlComm.Connection = sqlConn sqlComm.CommandText = "update committe_member set name = '@name' where name = 'member1'" Dim paramString As New SqlClient.SqlParameter("@name", SqlDbType.VarChar, 50) paramString.Direction = ParameterDirection.Input sqlComm.Parameters.Add(paramString) paramString.Value = TextBox1.Text sqlComm.ExecuteNonQuery() MsgBox("Record Sucessfully Altered", 0, "Confirmation!") sqlConn.Close()

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• How do I programmatically add a widget to a container created from GtkBuilder?

  - by Warner Young

  I've created a window that has some containers and widgets in it, and I want to add a new widget dynamically at run-time to one of the Vboxes in this window. So I have this code, which brings up the window: gtk_builder_add_from_file( g_builder, "window.xml", NULL ); mainwindow = GTK_WIDGET( gtk_builder_get_object( g_builder, "window" )); gtk_widget_show( mainwindow ); Then I create a new label, for example, and add it to one of the existing Vboxes, called "vbox_mid", like this: label = gtk_label_new( "Test label" ); vbox = GTK_WIDGET( gtk_builder_get_object( g_builder, "vbox_mid" )); gtk_box_pack_end( GTK_BOX( vbox ), label, TRUE, TRUE, 0 ); But this doesn't seem to work. I don't see a new label in the vbox. I have a feeling I'm missing something here, but I can't see what it is. I thought perhaps there was a special GtkBuilder call to add a widget dynamically, but I don't see anything that looks like that. I would really appreciate any help on this.

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• Polymorphic behavior not being implemented

  - by Garrett A. Hughes

  The last two lines of this code illustrate the problem: the compiler works when I use the reference to the object, but not when I assign the reference to an array element. The rest of the code is in the same package in separate files. BioStudent and ChemStudent are separate classes, as well as Student. package pkgPoly; public class Poly { public static void main(String[] arg) { Student[] stud = new Student[3]; // create a biology student BioStudent s1 = new BioStudent("Tom"); // create a chemistry student ChemStudent s2 = new ChemStudent("Dick"); // fill the student body with studs stud[0] = s0; stud[1] = s1; // compiler complains that it can't find symbol getMajor on next line System.out.println("major: " + stud[0].getMajor() ); // doesn't compile; System.out.println("major: " + s0.getMajor() ); // works: compiles and runs correctly } }

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• [Android] Pass variable/intent to an activity when launched from a Widget

  - by Pelly

  Hi, Currently within an activity in my application I can call another activity and pass a variable to it in the following manner: Intent myIntent = new Intent(parentView.getContext(), ShowStations.class); myIntent.putExtra("stationName", stations[position].StationName); startActivity(myIntent); This works fine, but now I want to be able to do the same from my Widget. Currently this code works fine for launching a specific activity from my widget: Intent WidgetIntent = new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_LAUNCHER).setComponent(new ComponentName("grell.com", "grell.com.FavStations")); PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, WidgetIntent, 0); updateViews.setOnClickPendingIntent(R.id.widget_main, pendingIntent); So now I am wondering how can I launch the same activity as shown in the first example but also pass through the 'stationName' variable. Any help would be greatly appreciated. Cheers

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• Reference to an instance method of a particular object

  - by Andrey

  In the following code, if i try to pass method reference using the class name, works. But passing the reference variable compiler gives an error, i do not understand why? public class User { private String name; public User(String name) { this.name = name; } public void printName() { System.out.println(name); } } public class Main { public static void main(String[] args) { User u1 = new User("AAA"); User u2 = new User("BBB"); User u3 = new User("ZZZ"); List<User> userList = Arrays.asList(u1, u2, u3); userList.forEach(User::printName); // works userList.forEach(u1::printName); // compile error } } Thanks,

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• Java access the caller variable, is it possible? how?

  - by lacas

  i have a class main { Class1 class1=new Class1(); class1.function1(); } class Class1 { int abc=1; ArrayList<Class2> class2s=new ArrayList<Class2>(); int function1() { class2s.add(new Class2(asd)); abc=555; } } class Class2 { int functionx() { Log.e("abc?", ""+PARENT???.abc); } } How can I get the caller Class's variable, say abc?

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• Object initialization sequence in Objective-C

  - by Alex

  Hello everyone. The Cocoa framework has a convention to always call self = [super init] in the init method of an inherited class, because [super init] may return a new instance. What will happen if I do this? @interface MyClass : NSObject /* or any other class */ { int ivar_; } @end @implementation MyClass - (id)init { ivar_ = 12345; if ((self = [super init])) { NSLog(@"ivar_'s value is %d", ivar_); } return self; } @end In the case when [super init] returns a new instance, what will I see in the console? ivar_'s value is 0? I can't think of a way to check this myself, because I don't know which class may return a new instance from its init method. Also, can't seem to find explicit clarification for this scenario in the docs. Could anyone help me out? Thanks!

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• xmlserializer throwing InvalidOperationException

  - by AndyC

  I have an XmlSerializer object, and I have added 2 event handlers to the UnknownElement and UnknownAttribute events, as below: XmlSerializer xs = new XmlSerialiser(typeof(MyClass)); xs.UnknownAttribute += new XmlAttributeEventHandler(xs_UnknownAttribute); xs.UnknownElement += new XmlElementEventHandler(xs_UnknownAttribute); Each of these event handlers basically do the same thing, they print out the node name or the attribute name causing the issue. But for some reason, an InvalidOperationException is getting thrown saying there is an error in the xml document with . I thought these errors would be caught by my events?

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• How to load the content of a page into another window?

  - by Cristian Castiblanco

  I'm building a Dashboard and for some stupid reasons my boss wants to load it in a frame on the homepage (yes a frame, he still lives in the 1990s). Anyway, sometimes the dashboard needs some room so that it can show all charts correctly, so I want to add a feature to load the content of the dashboard into a new window. The problem is that, if the user has had some interaction with the dashboard, it will contain modal dialogs, new images, etc... so I want to load all the dashboard content into a new window without reloading its content. Of course, the user should be able to continue browsing the dashboard without problems. How can I do that? I'm using jQuery as my JavaScript framework.

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• Rails and the <span> tag

  - by Zachary

  I'm fairly new to Ruby on Rails, and I'm attempting to create some fancy CSS buttons using the "sliding doors" technique. I have it almost working, but I feel like there has to be a better way to handle the tags for a link. The way I'm currently doing it: <%= link_to '<span>New car</span>', {:action => "new"}, :class=>"button" %> This isn't terrible, per se, but I would like to know if this is the best way to handle span tags is RoR.

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• how to set title within content page asp.net

  - by varshney4u

  Hi, I have created a Content Page using Master Page. Within Master Page, I have created the following tag for Title: <head id="Head1" runat="server"> <title></title> <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" /> </head> Within Content Page, following are set: protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { if (String.IsNullOrEmpty(Request.QueryString["PatientRegistrationKey"])) { // .... } else { this.Page.Title = "My New Title"; //.... } } Though I am also setting the Master Page at run time as bellow: protected void Page_PreInit(Object sender, EventArgs e) { if (String.IsNullOrEmpty(Request.QueryString["PatientRegistrationKey"])) this.MasterPageFile = "~/MasterPages/A.master"; else this.MasterPageFile = "~/MasterPages/B.master"; } While getting open this page in browser, I got following Title: http://localhost:3562/?PatientRegistrationKey=0 - My New Title Please advice for the changes, so that there should be only My New Title within title, nothing extra like query string etc. Any help would be appreciated.

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• Using a message class static method taking in an action to wrap Try/Catch

  - by Chris Marisic

  I have a Result object that lets me pass around a List of event messages and I can check whether an action was successful or not. I've realized I've written this code in alot of places Result result; try { //Do Something ... //New result is automatically a success for not having any errors in it result = new Result(); } catch (Exception exception) { //Extension method that returns a Result from the exception result = exception.ToResult(); } if(result.Success) .... What I'm considering is replacing this usage with public static Result CatchException(Action action) { try { action(); return new Result(); } catch (Exception exception) { return exception.ToResult(); } } And then use it like var result = Result.CatchException(() => _model.Save(something)); Does anyone feel there's anything wrong with this or that I'm trading reusability for obscurity?

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• wait for ajax request then finish the rest ( jQuery )

  - by user1725155

  I have a peace of jquery code: var new = checkCP(somedata); if(new=="hi"){ alert("Welcom"); } function checkCP(jsData){ $.ajax({ type: "POST", url: "Process.php", data: jsData, dataType: "json", success: function(data){ if(data.match==1) return "hi"; else return "bye"; } }); } I don't know why the welcome alert never show up . I checked everything , even on PHP file the result is 1 but apparently before It wait for ajax respond it passes the if(new=="hi"){ alert("Welcom"); } So is there anyway to wait for ajax respond then read the rest of codes in jQuery ? Thanks.

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• jquery element click event only allowed once? confuddled

  - by claw

  One a click event of an element, it only works once. Say the value is 2 it will increase/decrease/reset only once. How to I reset the event so the user can keep clicking on the element increasing the value of the value .item-selection-amount $('.item-selection-amount').click(function(event) { var amount = $(this).val(); switch (event.which) { case 1: //set new value + $(this).val(amount + 1); break; case 2: //set new value reset $(this).val(0); break; case 3: //set new value - if(amount > 0){ $(this).val(amount - 1); } break; } }); Thanks

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• Not all Code Paths return a Value Issue

  - by jorame

  I have this peace of code in a class(DataBase) and I'm getting "Not all Paths return a Value". Any help will be really appreciated. public static DataSet DELETE_PDT(String rowid) { SqlConnection con = new SqlConnection(); SqlCommand cmd = new SqlCommand("sp_DELETE_PDT", con); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.Add("@rowid", SqlDbType.Int).Value = rowid; con.ConnectionString = ConfigurationManager.ConnectionStrings["WMS"].ConnectionString; try { con.Open(); cmd.ExecuteNonQuery(); cmd.Dispose(); con.Close(); } catch (Exception ex) { throw new Exception("Error while deleting record. Please contact your System Administrator", ex); } }

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• What do you do in your source control repository when you start a rewrite of a program?

  - by Max Schmeling

  I wrote an application a while back and have been maintaining it for a while now, but it's gotten to the point where there's several major new features to be added, a ton of changes that need made, and I know quite a few things I could do better, so I'm starting a rewrite of the entire program (using bits and pieces from original). My question is, what do you do with SVN at this point? Should I put the new version somewhere else, or should I delete the files I no longer need, add the new files, and just treat it like normal development in SVN? How have you handled this in the past?

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• Updating a module level shared dictionary

  - by Vishal

  Hi, A module level dictionary 'd' and is accessed by different threads/requests in a django web application. I need to update 'd' every minute with a new data and the process takes about 5 seconds. What could be best solution where I want the users to get either the old value or the new value of d and nothing in between. I can think of a solution where a temp dictionary is constructed with a new data and assigned to 'd' but not sure how this works! Appreciate your ideas. Thanks

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• migrate/ update core data app without erasing user data!

  - by treasure

  hello, i have a very complicated problem that i would like to share with you and maybe someone can answer it for me. before i start i have to say that i am very new in this. So, i have a coredata iphone app (much like the recipes app) that uses a pre-populated sql database. The user can add/edit his own data but the default data cannot be deleted. the useres data are ALL saved in the same sql database. QUESTION: what do i have to do in order to: - update some (not all) of the default data that are stored in the sql database without "touching" the user's data? (the model will stay the same - no new entities etc-) (if the user uninstall the app and then reinstall the new version everything will be ok but i dont want to do this, obviously). can someone PLEASE help in coding level?

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