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Articles indexed Thursday March 18 2010

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  • iphone core data app crash

    - by satyam
    I'm able to complete my iphone app using core data internally. But for the first time when I'm running in simulator or on device its crashing with following error: 2010-03-18 10:55:41.785 CrData[1605:4603] Unresolved error Error Domain=NSCocoaErrorDomain Code=513 UserInfo=0x50448d0 "Operation could not be completed. (Cocoa error 513.)", { NSUnderlyingException = Error validating url for store; } When I run the app again in simulator or on device, its running perfectly. I'm not able to identify the exact problem. Can some one guide me on how to proceed further???

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  • How the jQuery TinyMCE and jQuery RSV get to work?

    - by Trez
    I'm using RSV to validate form element, and tinymce to convert textarea to editor. The textarea is included to be checked by rsv validator using 'required', since the textarea is being converted to tinymce editor. Theres a problem on the validation, even i entered the value in the editor the validator says that textarea is a null. How can i validate the textarea using RSV? any ideas? Thanks in advance.

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  • Register all GUI components as Observers or pass current object to next object as a constructor argu

    - by Jack
    First, I'd like to say that I think this is a common issue and there may be a simple or common solution that I am unaware of. Many have probably encountered a similar problem. Thanks for reading. I am creating a GUI where each component needs to communicate (or at least be updated) by multiple other components. Currently, I'm using a Singleton class to accomplish this goal. Each GUI component gets the instance of the singleton and registers itself. When updates need to be made, the singleton can call public methods in the registered class. I think this is similar to an Observer pattern, but the singleton has more control. Currently, the program is set up something like this: class c1 { CommClass cc; c1() { cc = CommClass.getCommClass(); cc.registerC1( this ); C2 c2 = new c2(); } } class c2 { CommClass cc; c2() { cc = CommClass.getCommClass(); cc.registerC2( this ); C3 c3 = new c3(); } } class c3 { CommClass cc; c3() { cc = CommClass.getCommClass(); cc.registerC3( this ); C4 c4 = new c4(); } } etc. Unfortunately, the singleton class keeps growing larger as more communication is required between the components. I was wondering if it's a good idea to instead of using this singleton, pass the higher order GUI components as arguments in the constructors of each GUI component: class c1 { c1() { C2 c2 = new c2( this ); } } class c2 { C1 c1; c2( C1 c1 ) { this.c1 = c1 C3 c3 = new c3( c1, this ); } } class c3 { C1 c1; C2 c2; c3( C1 c1, C2 c2 ) { this.c1 = c1; this.c2 = c2; C4 c4 = new c4( c1, c2, this ); } } etc. The second version relies less on the CommClass, but it's still very messy as the private member variables increase in number and the constructors grow in length. Each class contains GUI components that need to communicate through CommClass, but I can't think of a good way to do it. If this seems strange or horribly inefficient, please describe some method of communication between classes that will continue to work as the project grows. Also, if this doesn't make any sense to anyone, I'll try to give actual code snippets in the future and think of a better way to ask the question. Thanks.

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  • JQuery BlockUI with UpdatePanel Viewstate Issue

    - by Chris
    I am using BlockUI to show a modal. Within the blocked modal I have an update panel. Within the update panel I have a textbox and a button that submits the content back to the server. Everything works fine up to this point (the blockUI is called, the modal appears, and the button performs the postback). However, when the button's click event is fired the value for the textbox is consistently empty even if text was entered. When the update panel updates the textbox shows up blank. It appears that this may be some sort of viewstate issue and I haven't turned off viewstate. <a href="javascript:$.blockUI({ message: $('#divTest') });">SHOW MODAL</a> <div id="divTest" style="display: none;"> <asp:UpdatePanel ID="upTest" UpdateMode="Conditional" runat="server"> <ContentTemplate> <asp:TextBox ID="txtTestVS" runat="server" /><br /> <asp:Button ID="cmdTest" Text="TEST" OnClick="cmdTest_Click" UseSubmitBehavior="false" runat="server" /> </ContentTemplate> </asp:UpdatePanel> SERVER-SIDE: protected void cmdTest_Click(object sender, EventArgs e) { string x = txtTestVS.Text; } String "x" always equal "".

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  • While in CMD shell, copying files from host OS to guest VM locks files (VMware Player/Workstation)

    - by Malcolm
    We're running the latest versions of VMWare Player and Workstation for Windows. The following behavior is identical across both products. Problem: We open a CMD prompt in our guest OS (XP, Vista, Windows 7) and copy files from our host OS using the standard CMD shell copy command: copy z:\C$\testfiles The copy completes successfully, but from that point forward, all the files that were copied to our guest OS are now LOCKED on our host OS. This does not happen if we use Windows Explorer to copy files - it only happens when files are copied via the CMD shell. As mentioned at the start of this question, this behavior is reproducible in both VMWare Player and VMWare Workstation across multiple machines and multiple guest OS's. I've googled for a workaround, but without success. Any ideas appreciated. Malcolm

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  • can't add sharepoint users from trusted domain

    - by user22215
    I have a very strange problem with our Sharepoint 2007 implementation. I went in today to grant access to a user and was greeted with "The user does not exist or is not unique." Let me start off by saying that this user is not on our domain we have a 2 way trust connecting to one of our subsidiaries. I can see the users in the people pick but can't add them into Sharepoint. This problem flared up after we had some trust issues last two days ago. So I must ask has anyone came across this error and if so what steps did you take to resolve it? This link further highlights my problem: http://social.technet.microsoft.com/forums/en-US/sharepointgeneral/thread/41265a91-191c-4952-9c8c-1e0129b9fd3a

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  • Windows Server 2003 DHCP not handing out IPs

    - by SnOrfus
    I'm trying to setup a home server (to tinker with) as a domain controller. I've setup the domain and I've installed DHCP and setup a scope without any exclusions (with the default range of 192.168.0.1-254). My client machine is a Windows 7 (RC) machine and it has a connection but can't get an IP address. Even if I try setting the IP to a static 192.168.0.2 and there is still no connectivity. I can ping it from the server, but pinging the server from the client just times out. The only thing between the server and the client is a 24 port switch (D-Link DES-1024D). edit Ok, it turned out that the interfaces were setup backwards in the NAT settings (the internal nic connection was set to public and the external nic connection was set to private). I changed this and all was OK.... sort-of. Problem is now: If I set a static ip on the client (where I am typing this from) all is fine. BUT; when I set it to get it from DHCP, I get a correct IP from the server (192.168.0.2) but there is no internet on the client; but I can still ping the server fine from the client (which makes sense cause I was able to get an IP from it). edit I ended up just removing the Routing and DHCP server roles and just going with ICS for the time being until I get my hands on some better learning tools.

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  • Trouble Connecting to Virtual Machine after IP address Change

    - by David
    I have a VMware image running a copy of Fedora 11 which is hosted on a remote server. The remote server recently had its IP address change. I'm now unable to connect to my virtual machine. The server admin assures me that my virtual machine is running and assigned the new IP address. I have checked the firewalls and had the remote admin restart the VM instance. Neither of these fixed the problem. How do I troubleshoot a remote server which I am unable to SSH to? I'm actually even unable to ping the remote IP (connection timed out).

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  • Possible boot conflict?

    - by Evan Kroske
    I was installing Ubuntu on a computer on which Windows XP was already installed. The computer has multiple hard drive bays, so I decided to remove the XP HDD and install Ubuntu on a blank HDD when it was the only HDD in the system. Unfortunately, if I now try to boot Ubuntu with the Windows XP drive in the second slot, nothing will boot. However, if Windows XP is in the first slot, it will boot fine. Can anybody explain why this happens? When I was checking out the BIOS to see if something was messed up, I discovered that when Ubuntu is in the first slot, the BIOS doesn't recognize any HDDs. However, if XP is in the first slot, the BIOS recognizes both drives. Any hypotheses about why this happens? Edit: Here's the setup. I have an old server with seven SCSI HDD slots. I have five identical 68 Gb SCSI drives, but I can keep only two plugged in. XP is still installed on the first drive, but I reinstalled Ubuntu on the second drive and had Grub overwrite the XP bootloader on the first drive. Now, the setup works fine, and I can use Grub to load either XP or Ubuntu. However, if I plug in another identical blank HDD in the third slot, the computer recognizes only the XP drive and doesn't boot. Grub starts to load, then gives me a "disk not found" error. Running ls from the grub rescue prompt only shows one drive with two partitions. I guess this is a BIOS problem, but I'd still like to know what triggers it. What about a blank drive could cause the BIOS to freak out?

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  • Leaving a SQL Server DBA Job Gracefully

    You’re leaving your current employer for a new opportunity and want to make the move as smooth as possible. You don’t want to burn your bridges and want to make sure that everything you’ve left behind can be managed by the people you’ve left behind or the DBA who is replacing you. So, you’ve done your handover documentation and trained up the new guy. You definitely don’t want to be that DBA who is cursed the week after they leave when their network account is disabled and a bunch of stuff ‘breaks’.

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  • XML parsing with SAX | how to handle special characters?

    - by cedar715
    We have a JAVA application that pulls the data from SAP, parses it and renders to the users. The data is pulled using JCO connector. Recently we were thrown an exception: org.xml.sax.SAXParseException: Character reference "&#00" is an invalid XML character. So, we are planning to write a new level of indirection where ALL special/illegal characters are replaced BEFORE parsing the XML. My questions here are : 1. Is there any existing(open source) utility that does this job of replacing illegal characters in XML? 2. Or if I had to write such utility, how should i handle them? 3. Why is the above exception thrown? Thank You.

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  • Authlogic OpenID error: uninitialized constant OpenIdAuthentication::InvalidOpenId

    - by Bayard Randel
    Using authlogic 2.1.3, and authlogic-oid 1.0.4 I receive the following error as soon as rails hits a controller making a request to an OpenID provider: uninitialized constant OpenIdAuthentication::InvalidOpenId I also have the following installed: rack-openid (0.2.1) ruby-openid (2.1.7) rails/open_id_authentication plugin Gems in environment.rb are configured as such: config.gem "authlogic" config.gem "authlogic-oid", :lib => "authlogic_openid" config.gem "ruby-openid", :lib => "openid" Any suggestions would be appreciated, thank you.

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  • C/C++ for logic (business/domain) of a web application?

    - by Ramiz Uddin
    Can C/C++ be choice of keeping all your logic (business/domain) for web application? Why? I've two resources (cousins) having knowledge on C/C++ and me also good in C/C++, Python, HTML, CSS and JavaScript. We like to utilize our free time to work on our some good ideas we developed together. The ideas require knowledge of web application development. And I'm the only one who has it. Is there a way they developed the core in C/C++ and I do the rest of scripting for front-end development? Thanks.

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  • Memory leak on CollectionView.View.Refresh

    - by Dabblernl
    I have defined my binding thus: <TreeView ItemsSource="{Binding UsersView.View}" ItemTemplate="{StaticResource MyDataTemplate}" /> The CollectionViewSource is defined thus: private ObservableCollection<UserData> users; public CollectionViewSource UsersView{get;set;} UsersView=new CollectionViewSource{Source=users}; UsersView.SortDescriptions.Add( new SortDescription("IsLoggedOn",ListSortDirection.Descending); UsersView.SortDescriptions.Add( new SortDescription("Username",ListSortDirection.Ascending); So far, so good, this works as expected: The view shows first the users that are logged on in alphabetical order, then the ones that are not. However, the IsLoggedIn property of the UserData is updated every few seconds by a backgroundworker thread and then the code calls: UsersView.View.Refresh(); on the UI thread. Again this works as expected: users that log on are moved from the bottom of the view to the top and vice versa. However: Every time I call the Refresh method on the view the application hoards 3,5MB of extra memory, which is only released after application shutdown (or after an OutOfMemoryException...) I did some research and below is a list of fixes that did NOT work: The UserData class implements INotifyPropertyChanged Changing the underlying users collection does not make any difference at all: any IENumerable<UserData as a source for the CollectionViewSource causes the problem. -Changing the ColletionViewSource to a List<UserData (and refreshing the binding) or inheriting from ObservableCollection to get access to the underlying Items collection to sort that in place does not work. I am out of ideas! Help? EDIT: I found it: The Resource MyDataTemplate contains a Label that is bound to a UserData object to show one of its properties, the UserData objects being handed down by the TreeView's ItemsSource. The Label has a ContextMenu defined thus: <ContextMenu Background="Transparent" Width="325" Opacity=".8" HasDropShadow="True"> <PrivateMessengerUI:MyUserData IsReadOnly="True" > <PrivateMessengerUI:MyUserData.DataContext> <Binding Path="."/> </PrivateMessengerUI:MyUserData.DataContext> </PrivateMessengerUI:MyUserData> </ContextMenu> The MyUserData object is a UserControl that shows All properties of the UserData object. In this way the user first only sees one piece of data of a user and on a right click sees all of it. When I remove the MyUserData UserControl from the DataTemplate the memory leak disappears! How can I still implement the behaviour as specified above?

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  • change image use javascript DOM

    - by user289346
    <html> <head> <script type="text/javascript"> var curimage = "cottage_small.jpg"; var curtext = "View large image"; function changeSrc() { if (curtext == "View large image"||curimage == "cottage_small.jpg") { document.getElementById("boldStuff").innerHTML = "View small image"; curtext="View small image"; document.getElementById("myImage")= "cottage_large.jpg"; curimage = "cottage_large.jpg"; } else { document.getElementById("boldStuff").innerHTML = "View large image"; curtext = "View large image"; document.getElementById("myImage")= "cottage_small.jpg"; curimage = "cottage_small.jpg"; } } </script> </head> <body> <!-- Your page here --> <h1> Pink Knoll Properties</h1> <h2> Single Family Homes</h2> <p> Cottage:<strong>$149,000</strong><br/> 2 bed, 1 bath, 1,189 square feet, 1.11 acres <br/><br/> <a href="#" onclick="changeSrc()"><b id="boldStuff" />View large image</a> </p> <p><img id="myImage" src="cottage_small.jpg" alt="Photo of a cottage" /></p> </body> </html> This is my coding I need to change the image and text the same time when I click it. I use LTS, it shows the line document.getElementById("myImage")= "cottage_large.jpg"; is a wrong number of arquments or invalid property assigment. Dose someone can help? Bianca

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  • Could not load ConfigurationSection class - type

    - by nCdy
    at web.config <section name="FlowWebDataProviders" type="FlowWebProvidersSection" requirePermission="false"/> <FlowWebDataProviders peopleProviderName="sqlProvider" IzmListProviderName="sqlProvider"> <PeopleProviders> <add name="sqlProvider" type="SqlPeopleProvider" connectionStringName="FlowServerConnectionString"/> <add name="xmlProvider" type="XmlPeopleProvider" schemaFile="People.xsd" dataFile="People.xml"/> </PeopleProviders> <IzmListProviders> <add name="sqlProvider" type="SqlIzmListProvider" connectionStringName="FlowServerConnectionString"/> </IzmListProviders> </FlowWebDataProviders> and public class FlowWebProvidersSection : ConfigurationSection { [ConfigurationProperty("peopleProviderName", IsRequired = true)] public PeopleProviderName : string { get { this["peopleProviderName"] :> string } set { this["peopleProviderName"] = value; } } [ConfigurationProperty("IzmListProviderName", IsRequired = true)] public IzmListProviderName : string { get { (this["IzmListProviderName"] :> string) } set { this["IzmListProviderName"] = value; } } [ConfigurationProperty("PeopleProviders")] [ConfigurationValidatorAttribute(typeof(ProviderSettingsValidation))] public PeopleProviders : ProviderSettingsCollection { get { this["PeopleProviders"] :> ProviderSettingsCollection } } [ConfigurationProperty("IzmListProviders")] [ConfigurationValidatorAttribute(typeof(ProviderSettingsValidation))] public IzmListProviders : ProviderSettingsCollection { get { this["IzmListProviders"] :> ProviderSettingsCollection } } } and public class ProviderSettingsValidation : ConfigurationValidatorBase { public override CanValidate(typex : Type) : bool { if(typex : object == typeof(ProviderSettingsCollection)) true else false } /// <summary> // validate the provider section /// </summary> public override Validate(value : object) : void { mutable providerCollection : ProviderSettingsCollection = match(value) { | x is ProviderSettingsCollection => x | _ => null } unless (providerCollection == null) { foreach (_provider is ProviderSettings in providerCollection) { when (String.IsNullOrEmpty(_provider.Type)) { throw ConfigurationErrorsException("Type was not defined in the provider"); } mutable dataAccessType : Type = Type.GetType(_provider.Type); when (dataAccessType == null) { throw (InvalidOperationException("Provider's Type could not be found")); } } } } } project : Web Application ... I need to find error first . . . why : Error message parser: Error creating configuration section handler for FlowWebDataProviders: Could not load type 'FlowWebProvidersSection'. ? by the way : syntax of nemerle (current language) is very similar C#, don't afraid to read the code... thank you

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  • Good Administration Center Templates

    - by Alec Smart
    Hello, This may not be a programming question per se. But I am wondering what template do you use for your sites/webapps admin centers. Am looking primarily at free templates that give a basic structure. I know I can build my own, but I haven't had too much success in something that works for all my webapps/sites. Wondering if there is something nice and comprehensive available. Thank you for your time.

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  • GA written in Java

    - by EnderMB
    I am attempting to write a Genetic Algorithm based on techniques I had picked up from the book "AI Techniques for Game Programmers" that uses a binary encoding and fitness proportionate selection (also known as roulette wheel selection) on the genes of the population that are randomly generated within the program in a two-dimensional array. I recently came across a piece of pseudocode and have tried to implement it, but have come across some problems with the specifics of what I need to be doing. I've checked a number of books and some open-source code and am still struggling to progress. I understand that I have to get the sum of the total fitness of the population, pick a random number between the sum and zero, then if the number is greater than the parents to overwrite it, but I am struggling with the implementation of these ideas. Any help in the implementation of these ideas would be very much appreciated as my Java is rusty.

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  • Is there a way to delay an event handler (say for 1 sec) in Windows Forms

    - by Essam
    I need to be able to delay the event handlers for some controls (like a button) to be fired for example after 1 sec of the actual event (click event for example) .. is this possible by the .net framework ? I use a timer and call my code from the timer's tick event as below but I am not sure if this is the best approach ! void onButtonClick( ..) { timer1.Enabled = true; } void onTimerTick( ..) { timer.Enabled = false; CallMyCodeNow(); }

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  • Get Layout Shape Corresponding to Slide Shape

    - by Ryan
    In PP2007 and using VBA, how can I get the placeholder shape on a Slide Master layout that is the "master" for a placeholder shape on the slide? I am currently using a loop to compare the position and size of the slide placeholder with the position and shape of each placeholder shape in the slide's layout, but this isn't fool-proof. For example, if the placeholder shape is moved on the slide, its position may no longer match the position of any placeholder shapes in the slide's layout. I could reapply the slide's layout to snap placeholders back into position, but that's not what I want to do. Something in the object model like "Shape.Master" would be ideal but, of course, that doesn't exist.

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