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  • Thinking sphinx: Problems with polymorphic associations

    - by auralbee
    Hello, I recently switched from ultrasphinx to thinking_sphinx for full-text search. I am trying to figure out how to index fields of polymorphic associations. I found some information but I still have some problems, although it seems to be easy. Here is my setup: class Info < ActiveRecord::Base belongs_to :mappable, :polymorphic => true define_index indexes mappable_type indexes mappable(:name), :as => :mappable_name end class A < ActiveRecord::Base has_many :infos, :as => :mappable end class B < ActiveRecord::Base has_many :infos, :as => :mappable end Amongst others, I want to do a search in the name column of A and B (both classes have this column), so I added the field to my index. When I do rake thinking_sphinx:index I get the following error: Generating Configuration to .../config/development.sphinx.conf rake aborted! undefined method `connection' for Object:Class .../.gem/ruby/1.8/gems/thinking-sphinx-1.3.16/lib/thinking_sphinx/ association.rb:149:in `casted_options' Any idea? Am I missing something? Thanks in advance. Tobi

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  • pushViewController Not Displaying UIView/Nib with tabbar and nav bar

    - by james
    I'm relatively new to objective c but not programming and am stuck with my iphone app. I created a nav based app with both a navbar and a tab bar controller. I set the tab bar as the root controller. I'm able to switch between each tab without any issues to various UIViews and UITableViews. My issue is that in one of my UITableViews that I call from the TabBarController, didSelectRowAtIndexPath function is suppose to display a new UIView. The below code does not give any errors and runs fine but does not show the new Nib. if(newViewController == nil) { NSLog(@"yes nil"); BookViewController *aNewViewController = [[BookViewController alloc] initWithNibName:@"BookOptionView" bundle:nil]; self.newViewController = aNewViewController; [aNewViewController release]; } BookAppDelegate *delegate = (BookAppDelegate *)[[UIApplication sharedApplication] delegate]; [delegate.appNavBar pushViewController:newViewController animated:YES]; Now when I do the below, it works fine but it gets rid of the nav and tab which I'm assuming because its a modal call instead of pushing the view controller. BookViewController *screen = [[BookViewController alloc] initWithNibName:@"BookOptionView" bundle:[NSBundle mainBundle]]; screen.modalTransitionStyle = UIModalTransitionStyleCoverVertical; [self presentModalViewController:screen animated:YES]; [screen release]; Any ideas why I can't get the View Controller to push correctly? In my application delegate file, I declared an AppNavBarController object (inherit from UINavigationController) called appNavBar. Any help would be appreciated!

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  • How to retain XML string as a string field during XML deserialization

    - by detale
    I got an XML input string and want to deserialize it to an object which partially retain the raw XML. <SetProfile> <sessionId>A81D83BC-09A0-4E32-B440-0000033D7AAD</sessionId> <profileDataXml> <ArrayOfProfileItem> <ProfileItem> <Name>Pulse</Name> <Value>80</Value> </ProfileItem> <ProfileItem> <Name>BloodPresure</Name> <Value>120</Value> </ProfileItem> </ArrayOfProfileItem> </profileDataXml> </SetProfile> The class definition: public class SetProfile { public Guid sessionId; public string profileDataXml; } I hope the deserialization syntax looks like string inputXML = "..."; // the above XML XmlSerializer xs = new XmlSerializer(typeof(SetProfile)); using (TextReader reader = new StringReader(inputXML)) { SetProfile obj = (SetProfile)xs.Deserialize(reader); // use obj .... } but XMLSerializer will throw an exception and won't output < profileDataXml 's descendants to "profileDataXml" field in raw XML string. Is there any way to implement the deserialization like that?

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  • Why do properties require explicit typing during compilation?

    - by ctpenrose
    Compilation using property syntax requires the type of the receiver to be known at compile time. I may not understand something, but this seems like a broken or incomplete compiler implementation considering that Objective-C is a dynamic language. The property "comment" is defined with: @property (nonatomic, retain) NSString *comment; and synthesized with: @synthesize comment; "document" is an instance of one of several classes which conform to: @protocol DocumentComment <NSObject> @property (nonatomic, retain) NSString *comment; @end and is simply declared as: id document; When using the following property syntax: stringObject = document.comment; the following error is generated by gcc: error: request for member 'comment' in something not a structure or union However, the following equivalent receiver-method syntax, compiles without warning or error and works fine, as expected, at run-time: stringObject = [document comment]; I don't understand why properties require the type of the receiver to be known at compile time. Is there something I am missing? I simply use the latter syntax to avoid the error in situations where the receiving object has a dynamic type. Properties seem half-baked.

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  • Render User Controls and call their Page_Load

    - by David Murdoch
    The following code will not work because the controls (page1, page2, page3) require that their "Page_Load" event gets called. using System; using System.IO; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using iTextSharp.text; using iTextSharp.text.html.simpleparser; using iTextSharp.text.pdf; public partial class utilities_getPDF : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { // add user controls to the page AddContentControl("controls/page1"); AddContentControl("controls/page2"); AddContentControl("controls/page3"); // set up the response to download the rendered PDF... Response.ContentType = "application/pdf"; Response.ContentEncoding = System.Text.Encoding.UTF8; Response.AddHeader("Content-Disposition", "attachment;filename=FileName.pdf"); Response.Cache.SetCacheability(HttpCacheability.NoCache); // get the rendered HTML of the page System.IO.StringWriter stringWrite = new StringWriter(); System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite); this.Render(htmlWrite); StringReader reader = new StringReader(stringWrite.ToString()); // write the PDF to the OutputStream... Document doc = new Document(PageSize.A4); HTMLWorker parser = new HTMLWorker(doc); PdfWriter.GetInstance(doc, Response.OutputStream); doc.Open(); parser.Parse(reader); doc.Close(); } // the parts are probably irrelevant to the question... private const string contentPage = "~/includes/{0}.ascx"; private void AddContentControl(string page) { content.Controls.Add(myLoadControl(page)); } private Control myLoadControl(string page) { return TemplateControl.LoadControl(string.Format(contentPage, page)); } } So my question is: How can I get the controls HTML?

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  • Statically Compiling QWebKit 4.6.2

    - by geeko
    I tried to compile Qt+Webkit statically with MS VS 2008 and this worked. C:\Qt\4.6.2configure -release -static -opensource -no-fast -no-exceptions -no-accessibility -no-rtti -no-stl -no-opengl -no-openvg -no-incredibuild-xge -no-style-plastique -no-style-cleanlooks -no-style-motif -no-style-cde -no-style-windowsce -no-style-windowsmobile -no-style-s60 -no-gif -no-libpng -no-libtiff -no-libjpeg -no-libmng -no-qt3support -no-mmx -no-3dnow -no-sse -no-sse2 -no-iwmmxt -no-openssl -no-dbus -platform win32-msvc2008 -arch windows -no-phonon -no-phonon-backend -no-multimedia -no-audio-backend -no-script -no-scripttools -webkit -no-declarative However, I get these errors whenever building a project that links statically to QWebKit: 1 Creating library C:\Users\Geeko\Desktop\Qt\TestQ\Release\TestQ.lib and object C:\Users\Geeko\Desktop\Qt\TestQ\Release\TestQ.exp 1QtWebKit.lib(PluginPackageWin.obj) : error LNK2019: unresolved external symbol _VerQueryValueW@16 referenced in function "class WebCore::String __cdecl WebCore::getVersionInfo(void * const,class WebCore::String const &)" (?getVersionInfo@WebCore@@YA?AVString@1@QAXABV21@@Z) 1QtWebKit.lib(PluginPackageWin.obj) : error LNK2019: unresolved external symbol _GetFileVersionInfoW@16 referenced in function "private: bool __thiscall WebCore::PluginPackage::fetchInfo(void)" (?fetchInfo@PluginPackage@WebCore@@AAE_NXZ) 1QtWebKit.lib(PluginPackageWin.obj) : error LNK2019: unresolved external symbol _GetFileVersionInfoSizeW@8 referenced in function "private: bool __thiscall WebCore::PluginPackage::fetchInfo(void)" (?fetchInfo@PluginPackage@WebCore@@AAE_NXZ) 1QtWebKit.lib(PluginDatabaseWin.obj) : error LNK2019: unresolved external symbol _imp_PathRemoveFileSpecW@4 referenced in function "class WebCore::String __cdecl WebCore::safariPluginsDirectory(void)" (?safariPluginsDirectory@WebCore@@YA?AVString@1@XZ) 1QtWebKit.lib(PluginDatabaseWin.obj) : error LNK2019: unresolved external symbol _imp_SHGetValueW@24 referenced in function "void __cdecl WebCore::addWindowsMediaPlayerPluginDirectory(class WTF::Vector &)" (?addWindowsMediaPlayerPluginDirectory@WebCore@@YAXAAV?$Vector@VString@WebCore@@$0A@@WTF@@@Z) 1QtWebKit.lib(PluginDatabaseWin.obj) : error LNK2019: unresolved external symbol _imp_PathCombineW@12 referenced in function "void __cdecl WebCore::addMacromediaPluginDirectories(class WTF::Vector &)" (?addMacromediaPluginDirectories@WebCore@@YAXAAV?$Vector@VString@WebCore@@$0A@@WTF@@@Z) 1C:\Users\Geeko\Desktop\Qt\TestQ\Release\TestQ.exe : fatal error LNK1120: 6 unresolved externals Do I need to check something in the Qt project options ? I have QtCore, QtGui, Network and WebKit checked.

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  • How can I simulate this application hang scenario?

    - by Pwninstein
    I have a Windows Forms app that itself launches different threads to do different kinds of work. Occasionally, ALL threads (including the UI thread) become frozen, and my app becomes unresponsive. I've decided it may be a Garbage Collector-related issue, as the GC will freeze all managed threads temporarily. To verify that just managed threads are frozen, I spin up an unmanaged one that writes to a "heartbeat" file with a timestamp every second, and it is not affected (i.e. it still runs): public delegate void ThreadProc(); [DllImport("UnmanagedTest.dll", EntryPoint = "MyUnmanagedFunction")] public static extern void MyUnmanagedFunction(); [DllImport("kernel32")] public static extern IntPtr CreateThread( IntPtr lpThreadAttributes, uint dwStackSize, IntPtr lpStartAddress, IntPtr lpParameter, uint dwCreationFlags, out uint dwThreadId); uint threadId; ThreadProc proc = new ThreadProc(MyUnmanagedFunction); IntPtr functionPointer = Marshal.GetFunctionPointerForDelegate(proc); IntPtr threadHandle = CreateThread(IntPtr.Zero, 0, functionPointer, IntPtr.Zero, 0, out threadId); My Question is: how can I simulate this situation, where all managed threads are suspended but unmanaged ones keep on spinning? My first stab: private void button1_Click(object sender, EventArgs e) { Thread t = new Thread(new ThreadStart(delegate { new Hanger(); GC.Collect(2, GCCollectionMode.Forced); })); t.Start(); } class Hanger{ private int[] m_Integers = new int[10000000]; public Hanger() { } ~Hanger() { Console.WriteLine("About to hang..."); //This doesn't reproduce the desired behavior //while (true) ; //Neither does this //Thread.Sleep(System.Threading.Timeout.Infinite); } } Thanks in advance!!

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  • Backend raising (INotify)PropertyChanged events to all connected clients?

    - by Jörg Battermann
    One of our 'frontend' developers keeps requesting from us backend developers that the backend notifies all connected clients (it's a client/server environment) of changes to objects. As in: whenever one user makes a change, all other connected clients must be notified immediately of the change. At the moment our architecture does not have a notification system of that kind and we don't have a sort of pub/sub model for explicitly chosen objects (e.g. the one the frontend is currently implementing).. which would make sense in such a usecase imho, but obviously requires extra implementation. However, I thought frontends typically check for locks for concurrently existing user changes on the same object and rather pull for changes / load on demand and in the background rather than the backend pushing all changes to all clients for all objects constantly.. which seems rather excessive to me. However, it's being argumented that e.g. the MS Entity Framework does in fact publish (INotify)PropertyChanged not only for local changes, but for all such changes including other client connections, but I have found no proof or details regarding this. Can anyone shed some light into this? Do other e.g. ORMs etc provide broadcasted (INotify)PropertyChanged events on entities?

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  • How to add DOCTYPE and xml processing instructions when marshalling with JAXB?

    - by Juha Syrjälä
    I am marshalling (serializing) JAXB beans to output stream. How can I add DOCTYPE declaration and xml processing instructions to ouput? I am doing currently marshalling like this: JAXBContext jaxbContext = JAXBContext.newInstance("com.example.package"); Marshaller marshaller = jaxbContext.createMarshaller(); marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE); SchemaFactory schemaFactory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema"); Schema schema = schemaFactory.newSchema(schemaSource); marshaller.setSchema(schema); marshaller.marshal(object, output); I'd like have output that looks something like this: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE Something SYSTEM "some.dtd"> <?xml-stylesheet type="text/xsl" href="some.xsl"?> JAXB bean are generated code so I don't want to change them. There are some undocumented tricks to add the xml processing instructions and doctype. But what is the preferred or right way to do this?

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  • Send HTTP 404 from Application_Error

    - by Dmitriy Nagirnyak
    Hi, First of all, quickly what exactly I want to achieve: translate particular exception into the HTTP 404 so the ASP.NET can handle it further. I am handling exceptions in the ASP.NET (MVC2) this way: protected void Application_Error(object sender, EventArgs e) { var err = Server.GetLastError(); if (err == null) return; err = err.GetBaseException(); var noObject = err as ObjectNotFoundException; if (noObject != null) HandleObjectNotFound(); var handled = noObject != null; if (!handled) Logger.Fatal("Unhandled exception has occured in application.", err); } private void HandleObjectNotFound() { Server.ClearError(); Response.Clear(); // new HttpExcepton(404, "Not Found"); // Throw or not to throw? Response.StatusCode = 404; Response.StatusDescription = "Not Found"; Response.StatusDescription = "Not Found"; Response.Write("The whole HTML body explaining whata 404 is??"); } The problem is that I cannot configure default customErrors to work with it. When it is on then it never redirects to the page specified in customErrors: <error statusCode="404" redirect="404.html"/>. I also tried to raise new HttpExcepton(404, "Not Found") from the handler but then the response code is 200 which I don't understand why. So the questions are: What is the proper way of translating AnException into HTTP 404 response? How does customErrors section work when handling exceptions in Application_Error? Why throwing HttpException(404) renders (blank) page with success (200) status? Thanks, Dmitriy.

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  • Objective-C NSMutableDictionary Disappearing

    - by blackmage
    I am having this problem with the NSMutableDictionary where the values are not coming up. Snippets from my code look like this: //Data into the Hash and then into an array yellowPages = [[NSMutableArray alloc] init]; NSMutableDictionary *address1=[[NSMutableDictionary alloc] init]; [address1 setObject:@"213 Pheasant CT" forKey: @"Street"]; [address1 setObject:@"NC" forKey: @"State"]; [address1 setObject:@"Wilmington" forKey: @"City"]; [address1 setObject:@"28403" forKey: @"Zip"]; [address1 setObject:@"Residential" forKey: @"Type"]; [yellowPages addObject:address1]; NSMutableDictionary *address2=[[NSMutableDictionary alloc] init]; [address1 setObject:@"812 Pheasant CT" forKey: @"Street"]; [address1 setObject:@"NC" forKey: @"State"]; [address1 setObject:@"Wilmington" forKey: @"City"]; [address1 setObject:@"28403" forKey: @"Zip"]; [address1 setObject:@"Residential" forKey: @"Type"]; [yellowPages addObject:address2]; //Iterate through array pulling the hash and insert into Location Object for(int i=0; i<locationCount; i++){ NSMutableDictionary *anAddress=[theAddresses getYellowPageAddressByIndex:i]; //Set Data Members Location *addressLocation=[[Location alloc] init]; addressLocation.Street=[anAddress objectForKey:@"Street"]; locations[i]=addressLocation; NSLog(addressLocation.Street); } So the problem is only the second address is printed, the 813 and I can't figure out why. Can anyone offer any help?

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  • Reading Xml with XmlReader in C#

    - by Gloria Huang
    I'm trying to read the following Xml document as fast as I can and let additional classes manage the reading of each sub block. <ApplicationPool><Accounts><Account><NameOfKin></NameOfKin><StatementsAvailable><Statement></Statement></StatementsAvailable></Account></Accounts></ApplicationPool> I can't seem to format the above nicely :( However, I'm trying to use the XmlReader object to read each Account and subsequently the "StatementsAvailable". Do you suggest using XmlReader.Read and check each element and handle it? I've thought of seperating my classes to handle each node properly. So theres an AccountBase class that accepts a XmlReader instance that reads the NameOfKin and several other properties about the account. Then I was wanting to interate through the Statements and let another class fill itself out about the Statement (and subsequently add it to an IList). Thus far I have the "per class" part done by doing XmlReader.ReadElementString() but I can't workout how to tell the pointer to move to the StatementsAvailable element and let me iterate through them and let another class read each of those proeprties. Sounds easy!

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  • Is there something like a "long running offline transaction" for NHibernate or any other ORM?

    - by Vilx-
    In essence this is a followup of this question. I'm beginning to feel that I should give up the whole idea, but I'll give it one more shot. What I want is pretty much like a DB transaction. It should track my changes to the DB and then in the end allow me to either commit or rollback them. If I insert an object, I should get it back in my next (appropriate) SELECT query. If I delete it, future SELECT queries should not return it. Etc. But there is one catch - this transaction would be very long running. It would start when the user opened a form (I'm talking about Windows Forms here), and the commit/rollback would be when the user closed it(with OK/Cancel). So it could take anywhere between seconds and days. This requirement rules out a standard DB transaction because that would lock the tables/rows it touched, and other users wouldn't be able to use the system. Also the transaction should not commit ANY changes to the DB until it was really committed. So if one user makes some changes, others don't see them until OK button is hit. This prevents errors in case the computer crashes or is disconnected from the network. I'm quite OK if the solution puts constraints on my model (I'm using MSSQL 2008, btw). I can design the DB/code any way I like. I'm also fine with the idea that a commit could fail because someone already modified one of the objects my transaction touched. Is there anything like this? I looked at NHibernate.Burrow, but I'm not sure that that's the thing I want. Added: It's the very beginning of the project so I'm not tied to NHibernate. I started out with it but I can still change easily.

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  • certificate issues running app in windows 7 ?

    - by Jurjen
    Hi, I'm having some problems with my App. I'm using 'org.mentalis.security' assembly to create a certificate object from a 'pfx' file, this is the line of code where the exception occurs : Certificate cert = Certificate.CreateFromPfxFile(publicKey, certificatePassword); this has always worked and still does in production, but for some reason it throws an exception when run in windows 7 (tried it on 2 machines). CertificateException : Unable to import the PFX file! [error code = -2146893792] I can't find much on this message via google, but when checking the EventViewer I get an 'Audit Failure' every time this exception occurs: Event ID = 5061 Source = Microsoft Windows Security Task Category = system Integrity Keywords = Audit Failure Cryptographic operation. Subject: Security ID: NT AUTHORITY\IUSR Account Name: IUSR Account Domain: NT AUTHORITY Logon ID: 0x3e3 Cryptographic Parameters: Provider Name: Microsoft Software Key Storage Provider Algorithm Name: Not Available. Key Name: VriendelijkeNaam Key Type: User key. Cryptographic Operation: Operation: Open Key. Return Code: 0x2 ` I'm not sure why this isn't working on win 7, I've never had problems when I was running on Vista with this. I am running VS2008 as administrator but I guess that maybe the ASP.NET user doesn't have sufficient rights or something. It's pretty strangs that the 'Algorithm name' is 'Not Available' can anyone help me with this... TIA, Jurjen de Groot

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  • Unable to generate a temporary class (result=1).\r\nerror CS0030:- c#

    - by ltech
    Running XSD.exe on my xml to generate C# class. All works well except on this property public DocumentATTRIBUTES[][] Document { get { return this.documentField; } set { this.documentField = value; } } I want to try and use CollectionBase, and this was my attempt public DocumentATTRIBUTESCollection Document { get { return this.documentField; } set { this.documentField = value; } } /// <remarks/> [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)] public partial class DocumentATTRIBUTES { private string _author; private string _maxVersions; private string _summary; /// <remarks/> [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)] public string author { get { return _author; } set { _author = value; } } /// <remarks/> [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)] public string max_versions { get { return _maxVersions; } set { _maxVersions = value; } } /// <remarks/> [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)] public string summary { get { return _summary; } set { _summary = value; } } } public class DocumentAttributeCollection : System.Collections.CollectionBase { public DocumentAttributeCollection() : base() { } public DocumentATTRIBUTES this[int index] { get { return (DocumentATTRIBUTES)this.InnerList[index]; } } public void Insert(int index, DocumentATTRIBUTES value) { this.InnerList.Insert(index, value); } public int Add(DocumentATTRIBUTES value) { return (this.InnerList.Add(value)); } } However when I try to serialize my object using XmlSerializer serializer = new XmlSerializer(typeof(DocumentMetaData)); I get the error: {"Unable to generate a temporary class (result=1).\r\nerror CS0030: Cannot convert type 'DocumentATTRIBUTES' to 'DocumentAttributeCollection'\r\nerror CS1502: The best overloaded method match for 'DocumentAttributeCollection.Add(DocumentATTRIBUTES)' has some invalid arguments\r\nerror CS1503: Argument '1': cannot convert from 'DocumentAttributeCollection' to 'DocumentATTRIBUTES'\r\n"}

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  • .NET Process.Kill() in a safe way

    - by Orborde
    I'm controlling a creaky old FORTRAN simulator from a VB.NET GUI, using redirected I/O to communicate with the simulator executable. The GUI pops up a "status" window with a progress bar, estimated time, and a "STOP" button (Button_Stop). Now, I want the Button_Stop to terminate the simulator process immediately. The obvious way to do this is to call Kill() on the Child Process object. This gives an exception if it's done after the process has exited, but I can test whether the process is exited before trying to kill it, right? OK, so I do the following when the button is clicked: If Not Child.HasExited Then Child.Kill() Button_Stop.Enabled = False End If However, what if the process happens to exit between the test and the call to Kill()? In that case, I get an exception. The next thing to occur to me was that I can do Button_Stop.Enabled = False in the Process.Exited event handler, and thus prevent the Child.Kill() call in the Button_Stop.Clicked handler. But since the Process.Exited handler is called on a different thread, that still leaves the following possible interleaving: Child process exits. Process.Exited fires, calls Invoke to schedule the Button_Stop.Enabled = False User clicks on Button_Stop, triggering Child.Kill() Button_Stop.Enabled = False actually happens. An exception would then be thrown on step 3. How do I kill the process without any race conditions? Am I thinking about this entirely wrong?

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  • Delete record in Linq to Sql

    - by Anders Svensson
    I have Linq2Sql classes User, Page, and UserPage (from a junction table), i.e. a many-to-many relationship. I'm using a gridview to show all Users, with a dropdownlist in each row to show the Pages visited by each user. Now I want to be able to delete records through the gridview, so I have added a delete button in the gridview by setting "Enable deleting" on it. Then I tried to use the RowDeleting event to specify how to delete the records since it doesn't work by default. And because its a relationship I know I need to delete the related records in the junction table before deleting the user record itself, so I added this in the RowDeleting event: protected void GridView2_RowDeleting(object sender, GridViewDeleteEventArgs e) { int id = (int)((DataKey)GridView2.DataKeys[e.RowIndex]).Value; UserPageDBDataContext context = new UserPageDBDataContext(); var userPages = from userPage in context.UserPages where userPage.User.UserID == id select userPage; foreach (var userPage in userPages) context.UserPages.DeleteOnSubmit(userPage); context.SubmitChanges(); var user = context.Users.Single(u => u.UserID == id); context.Users.DeleteOnSubmit(user); context.SubmitChanges(); } This actually seems to delete records, because the record with the id in question does indeed disappear, but strangely, a new record seems to be added at the end...! So, say I have 3 records in the gridview: 1 Jack stackoverflow.com 2 Betty stackoverflow.com/questions 3 Joe stackoverflow.com/whatever Now, if I try to delete user 1 (Jack), record number 1 will indeed disappear in the gridview, but the same record will appear at the end with a new id: 2 Jack stackoverflow.com 3 Betty stackoverflow.com/questions 4 Joe stackoverflow.com/whatever I have tried searching on how to delete records using Linq, and I believe I'm doing exacly as the examples I have read (e.g. the second example here: http://msdn.microsoft.com/en-us/library/Bb386925%28v=VS.100%29.aspx). I have read that you can also set cascade delete on the relationship in the database, but I wanted to do it this way in code, as your supposed to be able to. So what am I doing wrong?

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  • WPF Storyboard delay in playing wma files

    - by Rita
    I'm a complete beginner in WPF and have an app that uses StoryBoard to play a sound. public void PlaySound() { MediaElement m = (MediaElement)audio.FindName("MySound.wma"); m.IsMuted = false; FrameworkElement audioKey = (FrameworkElement)keys.FindName("MySound"); Storyboard s = (Storyboard)audioKey.FindResource("MySound.wma"); s.Begin(audioKey); } <Storyboard x:Key="MySound.wma"> <MediaTimeline d:DesignTimeNaturalDuration="1.615" BeginTime="00:00:00" Storyboard.TargetName="MySound.wma" Source="Audio\MySound.wma"/> </Storyboard> I have a horrible lag and sometimes it takes good 10 seconds for the sound to be played. I suspect this has something to do with the fact that no matter how long I wait - The sound doesn't get played until after I leave the function. I don't understand it. I call Begin, and nothing happens. Is there a way to replace this method, or StoryBoard object with something that plays instantly and without a lag?

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  • check RAM,page file, /PAE, /3GB, SQL server memory using powershell

    - by Manjot
    I am a powershell novice. After days of searching.... I have put together a small powershell script (as below) to check page file, /PAE switch, /3GB switch, SQL server max RAM, min RAM. I am running this on 1 server. If I want to run it on many servers (from a .txt) file, How can I change it ? How can I change it to search boot.ini file's contents for a given server? clear $strComputer="." $PageFile=Get-WmiObject Win32_PageFile -ComputerName $strComputer Write-Host "Page File Size in MB: " ($PageFile.Filesize/(1024*1024)) $colItems=Get-WmiObject Win32_PhysicalMemory -Namespace root\CIMv2 -ComputerName $strComputer $total=0 foreach ($objItem in $colItems) { $total=$total+ $objItem.Capacity } $isPAEEnabled =Get-WmiObject Win32_OperatingSystem -ComputerName $strComputer Write-Host "Is PAE Enabled: " $isPAEEnabled.PAEEnabled Write-Host "Is /3GB Enabled: " | Get-Content C:\boot.ini | Select-String "/3GB" -Quiet # how can I change to search boot.ini file's contents on $strComputer $smo = new-object('Microsoft.SqlServer.Management.Smo.Server') $strSQLServer $memSrv = $smo.information.physicalMemory $memMin = $smo.configuration.minServerMemory.runValue $memMax = $smo.configuration.maxServerMemory.runValue ## DBMS Write-Host "Server RAM available: " -noNewLine Write-Host "$memSrv MB" -fore "blue" Write-Host "SQL memory Min: " -noNewLine Write-Host "$memMin MB " Write-Host "SQL memory Max: " -noNewLine Write-Host "$memMax MB" Any comments how this can be improved? Thanks in advance

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  • Error when creating JFrame from JFrame

    - by Aly
    Hi, I have an application that is works fine and the JFrame for it is launched in the constructor of a GameInitializer class which takes in some config parameters. I have tried to create a GUI in which allows the user to specify these config parameters and then click submit. When the user clicks submit a new GameInitializer object is created. The error I am getting is: Exception in thread "AWT-EventQueue-0" java.lang.Error: Cannot call invokeAndWait from the event dispatcher thread at java.awt.EventQueue.invokeAndWait(Unknown Source) at javax.swing.SwingUtilities.invokeAndWait(Unknown Source) at game.player.humanplayer.view.HumanView.update(HumanView.java:43) once submit is called this code is executed: values assigned to parames... new GameInitializer(userName, player, Constants.BLIND_STRUCTURE_FILES.get(blindStructure), handState); Then code in the GameInitializer constructor is: public GameInitializer(String playerName, AbstractPlayer opponent, String blindStructureConfig, AbstractHandState handState){ beginGame(playerName, opponent, blindStructureConfig, handState); } public static void beginGame(String playerName, AbstractPlayer opponent, String blindStructureConfig, AbstractHandState handState){ AbstractDealer dealer; BlindStructure.initialize(blindStructureConfig); AbstractPlayer humanPlayer = new HumanPlayer(playerName, handState); AbstractPlayer[] players = new AbstractPlayer[2]; players[0] = humanPlayer; players[1] = opponent; handState.setTableLayout(players); for(AbstractPlayer player : players){ player.initialize(); } dealer = new Dealer(players, handState); dealer.beginGame(); } It basically cascades down and eventually calls this piece of code in the HumanView class: public void update(final Event event, final ReadableHandState handState, final AbstractPlayer player) { try { SwingUtilities.invokeAndWait(new Runnable() { public void run() { gamePanel.update(event, handState, player); validate(); } }); } catch (InterruptedException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } if(event.equals(Event.HAND_ENDING)){ try { if(handState.wonByShowdown() || handState.isSplitPot()){ Thread.sleep(3500); } else{ Thread.sleep(1000); } } catch (InterruptedException e) { e.printStackTrace(); } } } Do you have any idea why?

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  • how to create and track multiple pairs "View-ViewModel"?

    - by Gianluca Colucci
    Hi! I am building an application that is based on MVVM-Light. I am in the need of creating multiple instances of the same View, and each one should bind to its own ViewModel. The default ViewModelLocator implements ViewModels as singletons, therefore different instances of the same View will bind to the same ViewModel. I could create the ViewModel in the VMLocator as a non-static object (as simple as returning new VM()...), but that would only partially help me. In fact, I still need to keep track of the opened windows. Nevertheless, each window might open several other windows (of a different kind, though). In this situation I might need to execute some operation on the parent View and all its children. For example before closing the View P, I might want to close all its children (view C1, view C2, etc.). Hence, is there any simple and easy way to achieve this? Or is there any best practice you would advice me to follow? Thanks in advance for your precious help. Cheers, Gianluca.

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  • How can I access master page text box from jquery file?

    - by stackuser1
    In my master page i've a textbox. <asp:TextBox ID="SearchTextBox" runat="server" class="searchtxtbox" onfocus="HideSearchWaterMark();" Text="Search" onblur="ShowSearchWaterMark(this);" /> I added jquery references in code behind. TextBox SearchTextBox = this.FindControl("SearchTextBox") as TextBox; StringBuilder objStringBuilder = new StringBuilder(); objStringBuilder.Append("<script type=\"text/javascript\" language=\"javascript\">\n"); objStringBuilder.AppendFormat("var searchTextBox = '{0}';\n", SearchTextBox.ClientID); objStringBuilder.Append("</script>\n"); this.Page.ClientScript.RegisterClientScriptBlock(GetType(), "RegisterVariables", objStringBuilder.ToString()); this.Page.ClientScript.RegisterClientScriptInclude(this.GetType(), "Global", this.ResolveClientUrl("~/Resources/Scripts/Search.js")); this.Page.ClientScript.RegisterClientScriptInclude(this.GetType(), "Global", this.ResolveClientUrl("~/Resources/Scripts/jquery-1.4.2.js")); this.Page.ClientScript.RegisterClientScriptInclude(this.GetType(), "Global", this.ResolveClientUrl("~/Resources/TagsScripts/jquery.autocomplete.js")); in Search.js i've the following methods to access the text box of master page: $(document).ready(function () { $("#" + searchTextBox).autocomplete("Handlers/GenericHandler.ashx?tgt=12", { multiple: true, multipleSeparator: ";", mustMatch: false, autoFill: true }); }); function HideSearchWaterMark() { var control = $("#" + searchTextBox); if (control[0].className == "searchtxtbox ac_input") control[0].value = ""; control[0].className = "searchtxtbox ac_input"; } function ShowSearchWaterMark(tagsTextBox) { if (searchTextBox.value.length == 0) { searchTextBox.value = "Search"; searchTextBox.className = "searchtxtbox ac_input"; } When i run my application i'm getting object reference not set error. Please tell me where i need to change my code.

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  • How do you marshall a parameterized type with JAX-WS / JAXB?

    - by LES2
    Consider the following classes (please assume public getter and setter methods for the private fields). // contains a bunch of properties public abstract class Person { private String name; } // adds some properties specific to teachers public class Teacher extends Person { private int salary; } // adds some properties specific to students public class Student extends Person { private String course; } // adds some properties that apply to an entire group of people public class Result<T extends Person> { private List<T> group; private String city; // ... } We might have the following web service implementation annotated as follows: @WebService public class PersonService { @WebMethod public Result<Teacher> getTeachers() { ... } @WebMethod public Result<Student> getStudents() { ... } } The problem is that JAXB appears to marshall the Result object as a Result<Person> instead of the concrete type. So the Result returned by getTeachers() is serialized as containing a List<Person> instead of List<Teacher>, and the same for getStudents(), mutatis mutandis. Is this the expected behavior? Do I need to use @XmlSeeAlso on Person? Thanks! LES

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  • objc_exception_throw When Returning NSManagedObject

    - by spamguy
    I have a method dedicated to finding an NSManagedObject ('company') using a supplied NSString and, if it's not found, creating a new one and returning it. As far as I know it's fully inited and the method works perfectly. That is, until the line after the return statement, when the app crashes with an objc_exception_throw. I googled this and couldn't find what causes it, only how to use it in breakpoint debugging. What's wrong with this method, and why is it throwing specifically this exception? - (NSManagedObject*) getCompanyObject:(NSString*)theCompany { NSError *error = nil; NSManagedObjectContext *moc = [[self delegate] managedObjectContext]; NSFetchRequest *fetch = [[[NSFetchRequest alloc] init] autorelease]; NSEntityDescription *entityDescription = [NSEntityDescription entityForName:@"Company" inManagedObjectContext:moc]; [fetch setEntity:entityDescription]; // object to be returned NSManagedObject *companyObject = [[NSManagedObject alloc] initWithEntity:entityDescription insertIntoManagedObjectContext:moc]; // set predicate (company name) NSPredicate *pred = [NSPredicate predicateWithFormat:[NSString stringWithFormat:@"name = \"%@\"", theCompany]]; [fetch setPredicate:pred]; NSArray *response = [moc executeFetchRequest:fetch error:&error]; if ([response count] == 0) // empty resultset --> no companies with this name { [companyObject setValue:theCompany forKey:@"name"]; NSLog(@"%@ not found. Adding.", theCompany); } else [companyObject setValue:[[response objectAtIndex:0] valueForKey:@"name"]]; return companyObject; }

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  • Editing 8bpp indexed Bitmaps

    - by Pedro Sá
    hi, i'm trying to edit the pixels of a 8bpp. Since this PixelFormat is indexed i'm aware that it uses a Color Table to map the pixel values. Even though I can edit the bitmap by converting it to 24bpp, 8bpp editing is much faster (13ms vs 3ms). But, changing each value when accessing the 8bpp bitmap results in some random rgb colors even though the PixelFormat remains 8bpp. I'm currently developing in c# and the algorithm is as follows: (C#) 1- Load original Bitmap at 8bpp 2- Create Empty temp Bitmap with 8bpp with the same size as the original 3-LockBits of both bitmaps and, using P/Invoke, calling c++ method where I pass the Scan0 of each BitmapData object. (I used a c++ method as it offers better performance when iterating through the Bitmap's pixels) (C++) 4- Create a int[256] palette according to some parameters and edit the temp bitmap bytes by passing the original's pixel values through the palette. (C#) 5- UnlockBits. My question is how can I edit the pixel values without having the strange rgb colors, or even better, edit the 8bpp bitmap's Color Table? Regards, Pedro

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