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• Uploadify with ruby on rails 'bad content body' 500 Internal Server Error

  - by Mr_Nizzle

  I'm Getting this error in my development log while uploadify is uploading the file and in the view i get an 'IO ERROR' beside filename. /!\ FAILSAFE /!\ Thu Mar 18 11:54:53 -0500 2010 Status: 500 Internal Server Error bad content body /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/utils.rb:351:in `parse_multipart' /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/utils.rb:323:in `loop' /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/utils.rb:323:in `parse_multipart' /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/request.rb:133:in `POST' /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/methodoverride.rb:15:in `call' /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/params_parser.rb:15:in `call' /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/session/cookie_store.rb:93:in `call' /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/reloader.rb:29:in `call' /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/failsafe.rb:26:in `call' /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call' /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `synchronize' /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call' /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/dispatcher.rb:106:in `call' /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/content_length.rb:13:in `call' /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/handler/fastcgi.rb:58:in `serve' /usr/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/fcgi_handler.rb:103:in `process_request' /usr/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/fcgi_handler.rb:153:in `with_signal_handler' /usr/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/fcgi_handler.rb:101:in `process_request' /usr/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/fcgi_handler.rb:78:in `process_each_request' /usr/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/fcgi_handler.rb:77:in `each' /usr/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/fcgi_handler.rb:77:in `process_each_request' /usr/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/fcgi_handler.rb:76:in `catch' /usr/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/fcgi_handler.rb:76:in `process_each_request' /usr/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/fcgi_handler.rb:51:in `process!' /usr/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/fcgi_handler.rb:23:in `process!' dispatch.fcgi:24 any idea on this?

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• jqGrid dynamic select option

  - by Jo

  I'm creating a jqgrid with drop down columns and I'm using cell editing. I need the options of the drop down columns to change dynamically and I've tried implementing this by setting the column to be: { name: "AccountLookup", index: "AccountLookup", width: 90, editable: true, resizable: true, edittype: "select", formatter: "select" }, and then in the beforeCellEdit event I have: beforeEditCell: function(id, name, val, iRow, iCol) { if(name=='AccountLookup') { var listdata = GetLookupValues(id, name); if (listdata == null) listdata = "1:1"; jQuery("#grid").setColProp(name, { editoptions: { value: listdata.toString()} }) } }, GetLookupValues just returns a string in the format "1:One;2:Two" etc. That works fine however the options are populated one click behind - ie i click on AccountID in row 1, and the dropdown is empty, however when I then click on AccountID in row 3 the options I set in the row 1 click are shown in the row 3 click. And so on. So always one click behind. Is there another way of achieving what I need? Bacially the dropdown options displayed are always changing and I need to load them as user enters the cell for editing. Perhaps I can somehow get at the select control in the beforeEditCell event and manually enter its values instead of using the setColProp call? If so could I get an example of doing that please? Another thing - if the dropdown is empty and a user doesn't cancel the cell edit, the grid script throws an error. I'm using clientarray editing if that makes a difference. Greatly appreciate any help. Regards, Jo

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• Datapager in silverlight 4 -Nested datagrid visibility issue

  - by Archie

  I have a datagrid in silverlight with child datagrid nested in it. Also I have a DataPager on the outer datagrid. The code looks like this: <data:DataGrid x:Name="dgData" Width="600" ItemsSource="{Binding}" AutoGenerateColumns="False" IsReadOnly="True" HorizontalScrollBarVisibility="Hidden" CanUserSortColumns="False" RowDetailsVisibilityChanged="dgData_RowDetailsVisibilityChanged" Margin="20,0" Grid.RowSpan="2"> <data:DataGrid.Columns> <data:DataGridTextColumn Header="Item" Width="*" Binding="{Binding ItemName,Mode=TwoWay}"/> <data:DataGridTextColumn Header="Company" Width="*" Binding="{Binding Company,Mode=TwoWay}"/> </data:DataGrid.Columns> <data:DataGrid.RowDetailsTemplate> <DataTemplate> <data:DataGrid x:Name="dgRowDetail" Width="400" HorizontalScrollBarVisibility="Hidden" AutoGenerateColumns="False" Visibility="Collapsed"> <data:DataGrid.Columns> <data:DataGridTextColumn Header="Date" Width="*" Binding="{Binding Date,Mode=TwoWay}"/> <data:DataGridTextColumn Header="Price" Width="*" Binding="{Binding Price,Mode=TwoWay}"/> </data:DataGrid.Columns> </data:DataGrid> </DataTemplate> </data:DataGrid.RowDetailsTemplate> </data:DataGrid> <data:DataPager x:Name="dpData" HorizontalAlignment="Center" DisplayMode="FirstLastPreviousNextNumeric" Source="{Binding}"/> I have one PagedCollectionView pgv which is bound to outer datagrid as: DataContext = pgv; When the row is clicked I set the child datagrid's ItemsSource property to another PagedCollectionView. My problem is it works fine except for the first row for the first time. When I click on it, it doesn't fire the dgData_RowDetailsVisibilityChanged event. Also, when I click on second row, firstly first row fires the event and then the second row fires it and shows the nested grid. Please help.

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• MDB listening a Topic in JBoss 5.1

  - by fool

  Hi, I have a topic configured correctly like this, in jboss 5.1: <mbean code="org.jboss.jms.server.destination.TopicService" name="jboss.messaging.destination:service=Topic,name=GreetingsTopic" xmbean-dd="xmdesc/Topic-xmbean.xml"> <depends optional-attribute-name="ServerPeer">jboss.messaging:service=ServerPeer </depends> <depends>jboss.messaging:service=PostOffice</depends> </mbean> I can see the topic being started in JBoss logs: 23:08:40,990 INFO [TopicService] Topic[/topic/GreetingsTopic] started, fullSize=200000, pageSize=2000, downCacheSize=2000 And I have this MDB: @MessageDriven(activationConfig = { @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jmx.Topic"), @ActivationConfigProperty(propertyName = "destination", propertyValue = "topic/GreetingsTopic") }) public class GreetingsClientWebMDB implements MessageListener { ... ... } When I deploy the MDB, I'm getting a strange error: 3:09:30,781 ERROR [JmsActivation] Unable to reconnect org.jboss.resource.adapter.jms.inflow.JmsActivationSpec@1a1d638(ra=org.jboss.resource.adapter.jms.JmsResourceAdapter@1da5b5b destination=topic/GreetingsTopic destinationType=javax.jmx.Topic tx=true durable=false reconnect=10 provider=java:/DefaultJMSProvider user=null maxMessages=1 minSession=1 maxSession=15 keepAlive=60000 useDLQ=true DLQHandler=org.jboss.resource.adapter.jms.inflow.dlq.GenericDLQHandler DLQJndiName=queue/DLQ DLQUser=null DLQMaxResent=5) java.lang.ClassCastException: Object at 'topic/GreetingsTopic' in context {java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory, java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces:org.jboss.naming:org.jnp.interfaces} is not an instance of [class=javax.jms.Queue classloader=BaseClassLoader@91e143{vfsfile:/usr/local/jboss-5.1.0.GA/server/default/conf/jboss-service.xml} interfaces={interface=javax.jms.Destination classloader=BaseClassLoader@91e143{vfsfile:/usr/local/jboss-5.1.0.GA/server/default/conf/jboss-service.xml}}] object class is [class=org.jboss.jms.destination.JBossTopic classloader=BaseClassLoader@91e143{vfsfile:/usr/local/jboss-5.1.0.GA/server/default/conf/jboss-service.xml} interfaces={interface=javax.jms.Topic classloader=BaseClassLoader@91e143{vfsfile:/usr/local/jboss-5.1.0.GA/server/default/conf/jboss-service.xml}}] at org.jboss.util.naming.Util.checkObject(Util.java:338) at org.jboss.util.naming.Util.lookup(Util.java:223) at org.jboss.resource.adapter.jms.inflow.JmsActivation.setupDestination(JmsActivation.java:464) at org.jboss.resource.adapter.jms.inflow.JmsActivation.setup(JmsActivation.java:352) at org.jboss.resource.adapter.jms.inflow.JmsActivation.handleFailure(JmsActivation.java:292) at org.jboss.resource.adapter.jms.inflow.JmsActivation$SetupActivation.run(JmsActivation.java:733) at org.jboss.resource.work.WorkWrapper.execute(WorkWrapper.java:205) at org.jboss.util.threadpool.BasicTaskWrapper.run(BasicTaskWrapper.java:260) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) I also try to use a deployment descriptor instead of annotations but with the same result. I really can't see the problem :(

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• The HTTP verb POST used to access path '/' is not allowed.

  - by Ryan

  The entire error: Server Error in '/' Application. The HTTP verb POST used to access path '/' is not allowed. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Web.HttpException: The HTTP verb POST used to access path '/' is not allowed. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [HttpException (0x80004005): The HTTP verb POST used to access path '/' is not allowed.] System.Web.DefaultHttpHandler.BeginProcessRequest(HttpContext context, AsyncCallback callback, Object state) +2871966 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8679410 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155 To be honest, I'm not even sure where the error came from. I'm running Visual Studio 2008 through the Virtual Server. I just put a button: <asp:Button ID="btnRegister" runat="server" Text="Register" CssClass="bt_register" onclick="btnRegister_Click" /> On a login user control, the onclick event is just a simple response.redirect Response.Redirect("~/register.aspx"); Debugging the project, it isn't even hitting the btnRegister_Click method anyway. I'm not sure where to even begin with debugging this error. Any information will help. I can post all the code I have, but like I said, I'm not sure where this error is even being thrown at. Edit It has nothing at all to do with the button click event. I got rid of the method and the onclick parameter on the aspx page. Still coming up with the same error problem found Okay so this is for a school project and its a group project. Some one in my group thought it would be a good idea to wrap a form tag around this area telling it to post. Found it doing a diff with a revision on Google code.

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• StackOverflowException throws often when .net application built with Debug mode

  - by user1487950

  I have an application which access an external webservice often, when i are trying to debug it, means debuging in vistual studio. it often throws out StackOverflowException at the webserverice call point. when building in Release mode , the exception thrown out only occasionally. I checked the call stack, looks like there is no recursive call. can you please suggest? thank you very much. call statck attached. [In a sleep, wait, or join] mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) + 0x2b bytes mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) + 0x2d bytes System.dll!System.Net.NetworkAddressChangePolled.CheckAndReset() + 0x9d bytes System.dll!System.Net.NclUtilities.LocalAddresses.get() + 0x49 bytes System.dll!System.Net.WebProxyScriptHelper.myIpAddress() + 0x27 bytes [Native to Managed Transition] System.dll!System.Net.WebProxyScriptHelper.MyMethodInfo.Invoke(object target, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, object[] args, System.Globalization.CultureInfo culture) + 0x6b bytes MTOqoHCT.dll!JScript 0.myIpAddress(object this, Microsoft.JScript.Vsa.VsaEngine vsa Engine, object arguments) + 0x91 bytes MTOqoHCT.dll!JScript 0.FindProxyForURL(object this, Microsoft.JScript.Vsa.VsaEngine vsa Engine, object arguments, object url, object host) + 0x3c6e bytes MTOqoHCT.dll!__WebProxyScript.__WebProxyScript.ExecuteFindProxyForURL(object url, object host) + 0x11d bytes [Native to Managed Transition] Microsoft.JScript.dll!System.Net.VsaWebProxyScript.CallMethod(object targetObject, string name, object[] args) + 0x11a bytes Microsoft.JScript.dll!System.Net.VsaWebProxyScript.Run(string url, string host) + 0x74 bytes [Native to Managed Transition] [Managed to Native Transition] mscorlib.dll!System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage msg, int methodPtr, bool fExecuteInContext) + 0x1ef bytes mscorlib.dll!System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage msg) + 0xf bytes mscorlib.dll!System.Runtime.Remoting.Messaging.ServerObjectTerminatorSink.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage reqMsg) + 0x66 bytes mscorlib.dll!System.Runtime.Remoting.Messaging.ServerContextTerminatorSink.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage reqMsg) + 0x8a bytes mscorlib.dll!System.Runtime.Remoting.Channels.CrossContextChannel.SyncProcessMessageCallback(object[] args) + 0x94 bytes mscorlib.dll!System.Threading.Thread.CompleteCrossContextCallback(System.Threading.InternalCrossContextDelegate ftnToCall, object[] args) + 0x8 bytes [Native to Managed Transition] [Managed to Native Transition] mscorlib.dll!System.Runtime.Remoting.Channels.CrossContextChannel.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage reqMsg) + 0xa7 bytes mscorlib.dll!System.Runtime.Remoting.Channels.ChannelServices.SyncDispatchMessage(System.Runtime.Remoting.Messaging.IMessage msg) + 0x92 bytes mscorlib.dll!System.Runtime.Remoting.Channels.CrossAppDomainSink.DoDispatch(byte[] reqStmBuff, System.Runtime.Remoting.Messaging.SmuggledMethodCallMessage smuggledMcm, out System.Runtime.Remoting.Messaging.SmuggledMethodReturnMessage smuggledMrm) + 0xed bytes mscorlib.dll!System.Runtime.Remoting.Channels.CrossAppDomainSink.DoTransitionDispatchCallback(object[] args) + 0x8a bytes mscorlib.dll!System.Threading.Thread.CompleteCrossContextCallback(System.Threading.InternalCrossContextDelegate ftnToCall, object[] args) + 0x8 bytes [Appdomain Transition] mscorlib.dll!System.Runtime.Remoting.Channels.CrossAppDomainSink.DoTransitionDispatch(byte[] reqStmBuff, System.Runtime.Remoting.Messaging.SmuggledMethodCallMessage smuggledMcm, out System.Runtime.Remoting.Messaging.SmuggledMethodReturnMessage smuggledMrm) + 0x74 bytes mscorlib.dll!System.Runtime.Remoting.Channels.CrossAppDomainSink.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage reqMsg) + 0xa3 bytes mscorlib.dll!System.Runtime.Remoting.Proxies.RemotingProxy.CallProcessMessage(System.Runtime.Remoting.Messaging.IMessageSink ms, System.Runtime.Remoting.Messaging.IMessage reqMsg, System.Runtime.Remoting.Contexts.ArrayWithSize proxySinks, System.Threading.Thread currentThread, System.Runtime.Remoting.Contexts.Context currentContext, bool bSkippingContextChain) + 0x50 bytes mscorlib.dll!System.Runtime.Remoting.Proxies.RemotingProxy.InternalInvoke(System.Runtime.Remoting.Messaging.IMethodCallMessage reqMcmMsg, bool useDispatchMessage, int callType) + 0x1d5 bytes mscorlib.dll!System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(System.Runtime.Remoting.Messaging.IMessage reqMsg) + 0x66 bytes mscorlib.dll!System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(ref System.Runtime.Remoting.Proxies.MessageData msgData, int type) + 0xee bytes System.dll!System.Net.NetWebProxyFinder.GetProxies(System.Uri destination, out System.Collections.Generic.IList<string> proxyList) + 0x83 bytes System.dll!System.Net.AutoWebProxyScriptEngine.GetProxies(System.Uri destination, out System.Collections.Generic.IList<string> proxyList, ref int syncStatus) + 0x84 bytes System.dll!System.Net.WebProxy.GetProxiesAuto(System.Uri destination, ref int syncStatus) + 0x2e bytes System.dll!System.Net.ProxyScriptChain.GetNextProxy(out System.Uri proxy) + 0x2e bytes System.dll!System.Net.ProxyChain.ProxyEnumerator.MoveNext() + 0x98 bytes System.dll!System.Net.ServicePointManager.FindServicePoint(System.Uri address, System.Net.IWebProxy proxy, out System.Net.ProxyChain chain, ref System.Net.HttpAbortDelegate abortDelegate, ref int abortState) + 0x120 bytes System.dll!System.Net.HttpWebRequest.FindServicePoint(bool forceFind) + 0xb1 bytes System.dll!System.Net.HttpWebRequest.GetRequestStream(out System.Net.TransportContext context) + 0x247 bytes System.dll!System.Net.HttpWebRequest.GetRequestStream() + 0xe bytes System.Web.Services.dll!System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(string methodName, object[] parameters) + 0xc0 bytes Gfinet.Config.dll!Gfinet.Config.Service.cfg_webservice.addOrUpdateProperties(string string, int intVal, Gfinet.Config.Service.PropertiesDataM[] propertiesDataMs) + 0xa3 bytes Gfinet.Config.dll!Gfinet.Config.Service.WSServiceImpl.AddOrUpdateProperties(int setId, Gfinet.Config.Service.PropertiesDataM[] properties) + 0x46 bytes [Native to Managed Transition] Gfinet.Config.dll!Gfinet.Config.Service.ServiceAspect.InvocationHandler(object target, System.Reflection.MethodBase method, object[] parameters) + 0x49e bytes Gfinet.Config.dll!Gfinet.Config.DynamicProxy.DynamicProxyImpl.Invoke(System.Runtime.Remoting.Messaging.IMessage message) + 0x110 bytes mscorlib.dll!System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(ref System.Runtime.Remoting.Proxies.MessageData msgData, int type) + 0xee bytes Tici.Kraps.Services.dll!Tici.Kraps.Services.Configuration.GFINetConfiguration.StoreElement(string application, string category, string id, string elementValue, bool save) Line 303 + 0x55 bytes C# Tici.Kraps.Services.dll!Tici.Kraps.Services.Configuration.GFINetConfiguration.SaveAllInternal() Line 582 + 0x6e bytes C# Tici.Kraps.Services.dll!Tici.Kraps.Services.Configuration.GFINetConfiguration.SaveAll(bool async) Line 434 + 0x8 bytes C# Tici.Kraps.Services.dll!Tici.Kraps.Services.Configuration.GFINetConfiguration.SaveAll() Line 406 + 0xa bytes C# Tici.Kraps.Services.dll!Tici.Kraps.Services.Container.Persistor.Save() Line 59 + 0xc bytes C# Spark.exe!Tici.Kraps.RibbonShell.OnBtnSaveWorkspaceItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e) Line 642 + 0xf bytes C# DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarItem.OnClick(DevExpress.XtraBars.BarItemLink link) + 0x108 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarBaseButtonItem.OnClick(DevExpress.XtraBars.BarItemLink link) + 0x47 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarItemLink.OnLinkClick() + 0x245 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarItemLink.OnLinkAction(DevExpress.XtraBars.BarLinkAction action, object actionArgs) + 0xb3 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarButtonItemLink.OnLinkAction(DevExpress.XtraBars.BarLinkAction action, object actionArgs) + 0x47e bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarItemLink.OnLinkActionCore(DevExpress.XtraBars.BarLinkAction action, object actionArgs) + 0x82 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.ViewInfo.BarSelectionInfo.ClickLink(DevExpress.XtraBars.BarItemLink link) + 0x85 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.ViewInfo.BarSelectionInfo.UnPressLink(DevExpress.XtraBars.BarItemLink link) + 0x1e5 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.Handler.BaseRibbonHandler.OnUnPressItem(DevExpress.Utils.DXMouseEventArgs e, DevExpress.XtraBars.Ribbon.ViewInfo.RibbonHitInfo hitInfo) + 0xa7 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.Handler.BaseRibbonHandler.OnUnPress(DevExpress.Utils.DXMouseEventArgs e, DevExpress.XtraBars.Ribbon.ViewInfo.RibbonHitInfo hitInfo) + 0x5f bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.Handler.BaseRibbonHandler.OnMouseUp(DevExpress.Utils.DXMouseEventArgs e) + 0x19a bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.Handler.RibbonHandler.OnMouseUp(DevExpress.Utils.DXMouseEventArgs e) + 0x47 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.RibbonControl.OnMouseUp(System.Windows.Forms.MouseEventArgs e) + 0x95 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.WmMouseUp(ref System.Windows.Forms.Message m, System.Windows.Forms.MouseButtons button, int clicks) + 0x2d1 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.WndProc(ref System.Windows.Forms.Message m) + 0x93a bytes DevExpress.Utils.v11.2.dll!DevExpress.Utils.Controls.ControlBase.WndProc(ref System.Windows.Forms.Message m) + 0x81 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.RibbonControl.WndProc(ref System.Windows.Forms.Message m) + 0x85 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.ControlNativeWindow.OnMessage(ref System.Windows.Forms.Message m) + 0x13 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.ControlNativeWindow.WndProc(ref System.Windows.Forms.Message m) + 0x31 bytes System.Windows.Forms.dll!System.Windows.Forms.NativeWindow.Callback(System.IntPtr hWnd, int msg, System.IntPtr wparam, System.IntPtr lparam) + 0x96 bytes [Native to Managed Transition] [Managed to Native Transition] DevExpress.Utils.v11.2.dll!DevExpress.Utils.Win.Hook.ControlWndHook.WindowProc(System.IntPtr hWnd, int message, System.IntPtr wParam, System.IntPtr lParam) + 0x159 bytes [Native to Managed Transition] [Managed to Native Transition] System.Windows.Forms.dll!System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(System.IntPtr dwComponentID, int reason, int pvLoopData) + 0x287 bytes System.Windows.Forms.dll!System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(int reason, System.Windows.Forms.ApplicationContext context) + 0x16c bytes System.Windows.Forms.dll!System.Windows.Forms.Application.ThreadContext.RunMessageLoop(int reason, System.Windows.Forms.ApplicationContext context) + 0x61 bytes System.Windows.Forms.dll!System.Windows.Forms.Application.Run(System.Windows.Forms.Form mainForm) + 0x31 bytes Tici.Kraps.Services.dll!Tici.Kraps.Services.Container.DefaultApplicationRunner.Run() Line 41 + 0x17 bytes C# Kraps.exe!Tici.Kraps.Program.Main() Line 105 + 0x9 bytes C# [Native to Managed Transition] [Managed to Native Transition] mscorlib.dll!System.AppDomain.ExecuteAssembly(string assemblyFile, System.Security.Policy.Evidence assemblySecurity, string[] args) + 0x6d bytes Microsoft.VisualStudio.HostingProcess.Utilities.dll!Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() + 0x2a bytes mscorlib.dll!System.Threading.ThreadHelper.ThreadStart_Context(object state) + 0x63 bytes mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool ignoreSyncCtx) + 0xb0 bytes mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) + 0x2c bytes mscorlib.dll!System.Threading.ThreadHelper.ThreadStart() + 0x44 bytes [Native to Managed Transition]

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• Application error: fault address 0x00012afb (Expert)

  - by Christian Almeida

  Hi, I need some "light" to get a solution. Probably there are tons of things that cause this problem, but maybe somebody could help me. Scenario: a Windows server running 24/7 a PostgreSQL database and others server applications (for processing tasks on database, etc...). There are differents servers scenarios (~30), with different hardware and windows versions (XP SP3/ WinServer, etc... all NT based). All aplications were written in Delphi7, and link to DLLs (in D7 also). After some days (sometimes a week, sometimes a couple of months), Windows begins to act strange, like not opening start menu, some buttons are missing in dialogs. And soon some applications do not open, raising a event on eventviewer: Faulting application x, version y, faulting module kernel32.dll, version 5.1.2600.5781, fault address 0x00012afb In mean while, others applications open fine, like notepad, iexplore, etc... but SOME of my applications don't, with only event log described above. But if we do not restart system, in a few days even cmd.exe stops open, (and all other applications) with same error on eventlog. I've tried to find 'what' can cause this, but with no sucess. So, and any advice will be welcome. Thanks in advance.

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• Troubleshooting .NET "Fatal Execution Engine Error"

  - by JYelton

  Summary: I periodically get a .NET Fatal Execution Engine Error on an application which I cannot seem to debug. The dialog that comes up only offers to close the program or send information about the error to Microsoft. I've tried looking at the more detailed information but I don't know how to make use of it. Error: The error is visible in Event Viewer under Applications and is as follows: .NET Runtime version 2.0.50727.3607 - Fatal Execution Engine Error (7A09795E) (80131506) The computer running it is Windows XP Professional SP 3. (Intel Core2Quad Q6600 2.4GHz w/ 2.0 GB of RAM) Other .NET-based projects that lack multi-threaded downloading (see below) seem to run just fine. Application: The application is written in C#/.NET 3.5 using VS2008, and installed via a setup project. The app is multi-threaded and downloads data from multiple web servers using System.Net.HttpWebRequest and its methods. I've determined that the .NET error has something to do with either threading or HttpWebRequest but I haven't been able to get any closer as this particular error seems impossible to debug. I've tried handling errors on many levels, including the following in Program.cs: // handle UI thread exceptions Application.ThreadException += new ThreadExceptionEventHandler(Application_ThreadException); // handle non-UI thread exceptions AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException); Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); // force all windows forms errors to go through our handler Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException); More Notes and What I've Tried... Installed Visual Studio 2008 on the target machine and tried running in debug mode, but the error still occurs, with no hint as to where in source code it occurred. When running the program from its installed version (Release) the error occurs more frequently, usually within minutes of launching the application. When running the program in debug mode inside of VS2008, it can run for hours or days before generating the error. Reinstalled .NET 3.5 and made sure all updates are applied. Broke random cubicle objects in frustration. Rewritten parts of code that deal with threading and downloading in attempts to catch and log exceptions, though logging seemed to aggravate the problem (and never provided any data). Question: What steps can I take to troubleshoot or debug this kind of error? Memory dumps and the like seem to be the next step, but I'm not experienced at interpreting them. Perhaps there's something more I can do in the code to try and catch errors... It would be nice if the "Fatal Execution Engine Error" was more informative, but internet searches have only told me that it's a common error for a lot of .NET-related items.

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• Refresh UltraGrid's GroupBy Sort on child bands when ListChanged?

  - by Idriss

  I am using Infragistics 2009 vol 1. My UltraGrid is bound to a BindingList of business objects "A" having themself a BindingList property of business objects "B". It results in having two bands: one named "BindingList`1", the other one "ListOfB" thanks to the currency manager. I would like to refresh the GroupBy sort of the grid whenever a change is performed on the child band through the child business object and INotifyPropertyChange. If I group by a property in the child band which is a boolean (let's say "Active") and I subscribe to the event ListChanged on the bindinglist datasource with this event handler: void Grid_ListChanged(object sender, ListChangedEventArgs e) { if (e.ListChangedType == ListChangedType.ItemChanged) { string columnKey = e.PropertyDescriptor.Name; if (e.PropertyDescriptor.PropertyType.Name == "BindingList`1") { ultraGrid.DisplayLayout.Bands[columnKey].SortedColumns.RefreshSort(true); } else { UltraGridBand band = ultraGrid.DisplayLayout.Bands[0]; UltraGridColumn gc = band.Columns[columnKey]; if (gc.IsGroupByColumn || gc.SortIndicator != SortIndicator.None) { band.SortedColumns.RefreshSort(true); } ColumnFilter cf = band.ColumnFilters[columnKey]; if (cf.FilterConditions.Count > 0) { ultraGrid.DisplayLayout.RefreshFilters(); } } } } the band.SortedColumns.RefreshSort(true) is called but It gives unpredictable results in the groupby area when the property Active is changed in the child band: if one object out of three actives becomes inactive it goes from: Active : True (3 items) To: Active : False (3 items) Instead of (which is the case when I drag the column back and forth to the group by area) Active : False (1 item) Active : True (2 items) Am I doing something wrong? Is there a way to restore the expanded state of the rows when performing a RefreshSort(true); ?

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• android.intent.action.SCREEN_ON doesn't work as a receiver intent filter

  - by Jim Blackler

  I'm trying to get a BroadcastReceiver invoked when the screen is turned on. In my AndroidManifest.xml I have specified : <receiver android:name="IntentReceiver"> <intent-filter> <action android:name="android.intent.action.SCREEN_ON"></action> </intent-filter> </receiver> However it seems the receiver is never invoked (breakpoints don't fire, log statements ignored). I've swapped out SCREEN_ON for BOOT_COMPLETED for a test, and this does get invoked. This is in a 1.6 (SDK level 4) project. A Google Code Search revealed this, I downloaded the project and synced it, converted it to work with latest tools, but it too is not able to intercept that event. http://www.google.com/codesearch/p?hl=en#_8L9bayv7qE/trunk/phxandroid-intent-query/AndroidManifest.xml&q=android.intent.action.SCREEN_ON Is this perhaps no longer supported? Previously I have been able to intercept this event successfully with a call to Context.registerReceiver() like so registerReceiver(new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { // ... } }, new IntentFilter(Intent.ACTION_SCREEN_ON)); However this was performed by a long-living Service. Following sage advice from CommonsWare I have elected to try to remove the long-living Service and use different techniques. But I still need to detect the screen off and on events.

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• jquery - how to get input text value from inside td

  - by Ashish Rajan

  <tr> <td> <input type="text" name="duration[]"> </td> <td> <input type="text" name="start[]"> </td> <td> <input type="text" name="wait[]"> </td> <td> <input type="text" name="end[]"> </td> </tr> I have such multiple rows. I need to fetch the values off all tds on keyup event on the td with input name start. Since they are many i cannot go with ids, need help in parent child approach with jquery. I was able to reach parent tr on keyup event on the above mentioned td but not able to access values of input field in other tds. the jquery code i used $(document).ready(function(){ $(".start").keyup(function(){ alert($(this).parent().get(-3).tagName); }) });

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• How to change StartupUri of WPF Application?

  - by Akash Kava

  I am trying to modify App.cs and load the WPF XAML files from code behind but its not working as it should. No matter whatever I try to set as StartupUri it doesnt start, the program quits after this. public partial class App : Application { protected override void OnStartup(StartupEventArgs e) { base.OnStartup(e); LoginDialog dlg = new LoginDialog(); if (dlg.ShowDialog() != true) return; switch (dlg.ChoiceApp) { case ChoiceApp.CustomerEntry: StartupUri = new Uri("/MyApp;component/Forms/CustomerEntry.xaml", UriKind.Relative); break; case ChoiceApp.VendorEntry: StartupUri = new Uri("/MyApp;component/Forms/VendorEntry.xaml", UriKind.Relative); break; } } } Now I even did trace and found out that LoginDialog is working correctly and is returning values correctly but setting "StartupUri" does not work. I checked in reverse assembly that DoStartup method of App gets called after OnStartup, so technically my StartupUri must load, but it doesnt, in App.xaml startup uri is not at all defined. Note: Bug Confirmed I noticed that ShowDialog sets Application.MainWindow and when dialog ends, it sets it back to null, and because of this setting StartupUri does not work after calling Modal Dialog in OnStartup or Startup event. There is no error or exception about invalid uri or anything like that. This method works without DialogBox being called in Startup event or OnStartup, i think calling showdialog on this method causes something like its mainwindow being set to expired window and it shuts down after this.

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• Hidden Features of C#?

  - by Serhat Özgel

  This came to my mind after I learned the following from this question: where T : struct We, C# developers, all know the basics of C#. I mean declarations, conditionals, loops, operators, etc. Some of us even mastered the stuff like Generics, anonymous types, lambdas, linq, ... But what are the most hidden features or tricks of C# that even C# fans, addicts, experts barely know? Here are the revealed features so far: Keywords yield by Michael Stum var by Michael Stum using() statement by kokos readonly by kokos as by Mike Stone as / is by Ed Swangren as / is (improved) by Rocketpants default by deathofrats global:: by pzycoman using() blocks by AlexCuse volatile by Jakub Šturc extern alias by Jakub Šturc Attributes DefaultValueAttribute by Michael Stum ObsoleteAttribute by DannySmurf DebuggerDisplayAttribute by Stu DebuggerBrowsable and DebuggerStepThrough by bdukes ThreadStaticAttribute by marxidad FlagsAttribute by Martin Clarke ConditionalAttribute by AndrewBurns Syntax ?? operator by kokos number flaggings by Nick Berardi where T:new by Lars Mæhlum implicit generics by Keith one-parameter lambdas by Keith auto properties by Keith namespace aliases by Keith verbatim string literals with @ by Patrick enum values by lfoust @variablenames by marxidad event operators by marxidad format string brackets by Portman property accessor accessibility modifiers by xanadont ternary operator (?:) by JasonS checked and unchecked operators by Binoj Antony implicit and explicit operators by Flory Language Features Nullable types by Brad Barker Currying by Brian Leahy anonymous types by Keith __makeref __reftype __refvalue by Judah Himango object initializers by lomaxx format strings by David in Dakota Extension Methods by marxidad partial methods by Jon Erickson preprocessor directives by John Asbeck DEBUG pre-processor directive by Robert Durgin operator overloading by SefBkn type inferrence by chakrit boolean operators taken to next level by Rob Gough pass value-type variable as interface without boxing by Roman Boiko programmatically determine declared variable type by Roman Boiko Static Constructors by Chris Easier-on-the-eyes / condensed ORM-mapping using LINQ by roosteronacid Visual Studio Features select block of text in editor by Himadri snippets by DannySmurf Framework TransactionScope by KiwiBastard DependantTransaction by KiwiBastard Nullable<T> by IainMH Mutex by Diago System.IO.Path by ageektrapped WeakReference by Juan Manuel Methods and Properties String.IsNullOrEmpty() method by KiwiBastard List.ForEach() method by KiwiBastard BeginInvoke(), EndInvoke() methods by Will Dean Nullable<T>.HasValue and Nullable<T>.Value properties by Rismo GetValueOrDefault method by John Sheehan Tips & Tricks nice method for event handlers by Andreas H.R. Nilsson uppercase comparisons by John access anonymous types without reflection by dp a quick way to lazily instantiate collection properties by Will JavaScript-like anonymous inline-functions by roosteronacid Other netmodules by kokos LINQBridge by Duncan Smart Parallel Extensions by Joel Coehoorn

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• ADFS 2.0 - ID3206 - A signin response may only redirect within the current web application

  - by MattK

  I've recently bumped into this issue: http://social.msdn.microsoft.com/Forums/en-US/Geneva/thread/adcdd533-d5e3-4af9-b3f5-b9a6d06b5c44?prof=required Does anyone have any ideas around this?

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• Mimicking the UltraGridColumnChooser's drag & drop ability

  - by Sören Kuklau

  (Infragistics 2008 Vol. 3, CLR 2.0) Infragistics's UltraGrid comes with a column chooser user control, which is simply a vertical arrangement of columns with checkboxes that toggle a column's hidden state. In addition, it allows you to pick a column and drag it directly to the grid so you don't have to manually position it afterwards. (This is particularly handy when you already have a lot of visible columns and have no clue where the new one ended up.) I'm building my own column chooser based on an UltraTree. Getting the checkboxes to behave the same wasn't an issue, but I haven't found a way to drag a column from the tree to the grid and have it accept it. In my tree, each UltraTreeNode has a Tag with the following struct: Private Structure DraggableGridColumn Public NodeKey As String Public NodeName As String Public ParentKey As String Public Column As UltraGridColumn End Structure I then have an event as follows: Private Sub columnsTree_SelectionDragStart(ByVal sender As Object, ByVal e As System.EventArgs) Handles columnsTree.SelectionDragStart If columnsTree.SelectedNodes.Count <> 1 Then Return End If If Not TypeOf columnsTree.SelectedNodes(0).Tag Is DraggableGridColumn Then Return End If Dim column As UltraGridColumn = CType(columnsTree.SelectedNodes(0).Tag, DraggableGridColumn).Column columnsTree.DoDragDrop(column, DragDropEffects.All) End Sub In the DoDragDrop call, neither column (of type UltraGridColumn) nor column.Header (of type ColumnHeader) get accepted by the grid. I assume I'm sending the wrong type, and/or that the grid expects a special struct with some additional information. Unfortunately, I've also failed to catch an event (both on the column chooser side as well as on the grid side) where Infragistics's normal column chooser does this properly; the normal drag & drop events never seem to fire.

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• iPad application crash in Apple review - cannot replicate in simulator, have crash log

  - by Mike

  I am clearly missing something obvious here and would really appreciate some input. I have tried repeatedly to submit an application to Apple (iPad in this case) that is crashing on their end when testing but I cannot replicated the situation on my end (obviously I only have the damned simulator to work with at this point). The crash log is as follows: Date/Time: 2010-04-01 05:39:47.226 -0700 OS Version: iPhone OS 3.2 (7B367) Report Version: 104 Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x00000000, 0x00000000 Crashed Thread: 0 Thread 0 Crashed: 0 libSystem.B.dylib 0x000790a0 __kill + 8 1 libSystem.B.dylib 0x00079090 kill + 4 2 libSystem.B.dylib 0x00079082 raise + 10 3 libSystem.B.dylib 0x0008d20a abort + 50 4 libstdc++.6.dylib 0x00044a1c __gnu_cxx::__verbose_terminate_handler() + 376 5 libobjc.A.dylib 0x000057c4 _objc_terminate + 104 6 libstdc++.6.dylib 0x00042dee __cxxabiv1::__terminate(void (*)()) + 46 7 libstdc++.6.dylib 0x00042e42 std::terminate() + 10 8 libstdc++.6.dylib 0x00042f12 __cxa_throw + 78 9 libobjc.A.dylib 0x000046a4 objc_exception_throw + 64 10 CoreFoundation 0x00090c6e +[NSException raise:format:arguments:] + 74 11 CoreFoundation 0x00090d38 +[NSException raise:format:] + 28 12 Foundation 0x00002600 -[NSCFDictionary setObject:forKey:] + 184 13 iPadMosaic 0x00003282 -[iPadMosaicViewController getAlbumThumbs] (iPadMosaicViewController.m:468) 14 Foundation 0x000728fe __NSFireDelayedPerform + 314 15 CoreFoundation 0x00022d1c CFRunLoopRunSpecific + 2092 16 CoreFoundation 0x000224da CFRunLoopRunInMode + 42 17 GraphicsServices 0x000030d4 GSEventRunModal + 108 18 GraphicsServices 0x00003180 GSEventRun + 56 19 UIKit 0x000034c2 -[UIApplication _run] + 374 20 UIKit 0x000019ec UIApplicationMain + 636 21 iPadMosaic 0x00002234 main (main.m:14) 22 iPadMosaic 0x00002204 start + 32 My understanding here is that I am botching the Dictionary add somehow. The relevant lines of code are: for (NSDictionary *album in self.albumList) { // Get image for each album cover UIImage *albumCover; // Loop through photos to get URL of cover based on photo ID match NSString *coverURL = @""; for (NSDictionary *photo in self.photoList) { if ([[photo objectForKey:@"pid"] isEqualToString:[album objectForKey:@"cover_pid"]]) { coverURL = [photo objectForKey:@"src"]; } } NSURL *albumCoverURL = [NSURL URLWithString:coverURL]; NSData *albumCoverData = [NSData dataWithContentsOfURL:albumCoverURL]; albumCover = [UIImage imageWithData:albumCoverData]; if (albumCover == nil || albumCover == NULL) { //NSLog(@"No album cover for some reason"); albumCover = [UIImage imageNamed:@"noImage.png"]; } [[self.albumList objectAtIndex:albumCurrent] setObject:albumCover forKey:@"coverThumb"]; } This is part of a loop that runs over the existing dictionaries stored in an array. If retrieving the album cover fails for some reason the object is filled with a default image and then added. The last line of the code is what's showing up in the crash log. It runs fine in the simulator but crashes 100% in testing on device apparently. Can anyone tell me what I am missing here?

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• WPF ICommand over a button

  - by toni

  Hi, I have implemented a custom IComand class for one of my buttons. The button is placed in a page 'MyPage.xaml' but its custom ICommand class is placed in another class, not in the MyPage code behind. Then from XAML I want to bind the button with its custom command class and then I do: MyPage.xaml: <Page ...> <Page.CommandBindings> <CommandBinding Command="RemoveAllCommand" CanExecute="CanExecute" Executed="Execute" /> </Page.CommandBindings> <Page.InputBindings> <MouseBinding Command="RemoveAllCommand" MouseAction="LeftClick" /> </Page.InputBindings> <...> <Button x:Name="MyButton" Command="RemoveAllCommand" .../> <...> </Page> and the custom command button class: // Here I derive from MyPage class because I want to access some objects from // Execute method public class RemoveAllCommand : MyPage, ICommand { public void Execute(Object parameter) { <...> } public bool CanExecute(Object parameter) { <...> } public event EventHandler CanExecuteChanged { add { CommandManager.RequerySuggested += value; } remove { CommandManager.RequerySuggested -= value; } } } My problem is how to say MyPage.xaml that Execute and CanExecute methods for the button is in another class and not the code behind where is placed the button. How to say these methods are in RemoveAllCommand Class in XAML page. Also I want to fire this command when click mouse event is produced in the button so I do an input binding, is it correct? Thanks

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• Java XML Unmarshalling fails on ampersand (&amp;) using JAXB

  - by ryanprayogo

  I have the following XML: <?xml version="1.0" encoding="UTF-8"?> <details> ... <address1>Test&amp;Address</address1> ... </details> When I try to unmarshal it using JAXB, it throws the following exception: Caused by: org.xml.sax.SAXParseException: The reference to entity "Address" must end with the ';' delimiter. at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) at org.apache.xerces.impl.XMLScanner.reportFatalError(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEntityReference(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:194) But when I changed the &amp; in the XML to &apos;, it works. Looks like the problem is only with ampersand &amp; and I cannot understand why. The code to unmarshal is: JAXBContext context = JAXBContext.newInstance("some.package.name", this.getClass().getClassLoader()); Unmarshaller unmarshaller = context.createUnmarshaller(); obj = unmarshaller.unmarshal(new StringReader(xml)); Anyone have some insight?

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• what are the difficulties of operating system multithreading?

  - by ghedas

  I am reading a book that compares two ways of implementing threads, Middleware Threads and OS Threads. I have a question about these sentences: "A difficulty of operating system multithreading, however, is performance overhead. Since it is the operating system that is involved in switching threads, this involves system calls. These are generally more expensive than thread operations executed at the user level, which is where the transactional middleware is operating."

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• resizing row's height in QTreeWidget/QTreeView

  - by serge

  Hi everyone, I have some problems with sizing row's height in QTreeWidget. I use QStyledItemDelegate with QPlainTextEdit. During editing text in QPlainTextEdit i check for changes with a help of: rect = self.blockBoundingRect(self.firstVisibleBlock()) and if text's height changes i resize editor size and need row in QTreeWidget also resizing. But i don't know how to inform TreeWidget or a Delegate about changes. I tried to initialize editor with index, that i could use in a future, but Delegate creates new editor every time and i failed to use signals. Also I used following function to catch resize event, but it' doesn't: bool QAbstractItemDelegate::editorEvent ( QEvent * event, QAbstractItemModel * model, const QStyleOptionViewItem & option, const QModelIndex & index ) How can i bound editor's size changes with TreeWidget? And one more thing, by default all items (cells) in TreeWidget have -1 or some big value as default width. I need whole text in cell to be visible, so how can i limit cells width only by visible range and make it expand in height? I want for it the same behavior as in instance a table in MSWord. Thank you in advance, Serge

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• WPF - Binding an ObservableCollection Dependency Property within a UserControl

  - by John

  I have a control class DragGrid : Grid { ... } which inherits from the original grid and enables dragging and resizing its child elements. I need to bind a custom DP named WorkItemsProperty to an observable collection of type WorkItem (implements INotifyPropertyChanged). Each element in the grid is bound to a collection item. Whenever the user adds a new item dynamically at runtime (the items cannot be declared in XAML!), or deletes an item from that collection, the WorkItems DP on the DragGrid should be updated, and the children in the grid (where each child represents a WorkItem collection item). My question is how does the DP notify the control about which child element in the grid must be removed, changed ('change' means user dragged an element, or resized it with the mouse) or added, and how would I identify which one of the existing children is the one that needs to be deleted or changed. I understand that this is where the DependencyPropertyChangedCallback comes in. But that only gets called when the DP property is set anew, not when something inside the collection changes (like add, remove item). So in the end, does the DragGrid control somehow need to subscribe to the CollectionChanged event? At what point would I hook up the event handler for that?

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• Illegal access: this web application instance has been stopped already. Could not load com.mysql.jd

  - by johnbritto

  Hi I am running webapplication in tomcat 5.5.It will throw Invalid state Exception Eg: Illegal access: this web application instance has been stopped already. C ould not load com.mysql.jdbc.SQLError. The eventual following stack trace is ca used by an error thrown for debugging purposes as well as to attempt to terminat e the thread which caused the illegal access, and has no functional impact. java.lang.IllegalStateException at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1273) How to resolve this issue.

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• WiX/Windows Installer: Re-install to a new folder

  - by vitalyval

  1. I am using WiX for creating installer and would like to implement the following behaviour: If a user launches msi installer for the product and the product already installed, then wizard works similar to pure (first time) installation with exception of some things (e.g. license aggrement screen is omitted). The wizard should allow for example to change installation folder, select whether to place desktop shortcut,... I tried to do: <Publish Event="ReinstallMode" Value="amus"><![CDATA[INSTALL_MODE = "Change"]]></Publish> <Publish Event="Reinstall" Value="ALL"><![CDATA[INSTALL_MODE = "Change"]]></Publish> But after installation completes: the product is in the same folder, where it was installed first time; desktop icon in the same state as it was after first time install. MSDN says: "Do not attempt to change the target directory path if some components that use the path are already installed for the current user or for a different user". Is there a way to re-install in another forlder and add/remove desktop icon in re-install? 2. Is this normal to use the same KeyPath for some components? For example the same registry values for DeskTop and Programs menu shortcuts? MSDN says: "Two components cannot share the same key path value". But compiling and verifying goes OK. And I did not discover problems using the same keypaths.

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• FileSystemWatcher.Changed fires immediately when Excel 2007 opens XLS file in compatibility mode

  - by Rick Mogstad

  We use a FileSystemWatcher to monitor documents opened from our Document Management system, and if the user saves the document, we ask if they would also like them updated in our system. We have a problem with XLS files in Excel 2007 (have not verified that the problem does not exist in 2003, but it only seems to be files that open in compatibility mode in 2007) where the Changed event fires immediately upon opening the file, and then once more upon closing the file, even if nothing has changed or the user chooses not to save upon closing. This same behavior does not exist when opening XLSX files. I wrote a test app to verify the behavior, which you can find at (http://www.just2guys.net/SOFiles/FSWExcel.zip). In the app, there is one FileSystemWatcher for each NotifyFilter type, so that it is apparent why the Changed event was fired. Any way you can think of to only prompt the user when the document is actually saved in some way by the user? I can start monitoring the file after Process.Start is called, which allows me to skip the message upon opening the document, but I still get one upon closing the document, even when nothing was changed.

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• Dynamic type languages versus static type languages

  - by cvs

  What are the advantages and limitations of dynamic type languages compared to static type languages? See also: whats with the love of dynamic languages (a far more argumentative thread...)

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