Using an UltraExplorerBar (7.3) in Outlook mode, when you double click an item it occasionaly throws the following error. I'm not evening trying to handle the double click event.
System.NullReferenceException was unhandled Message="Object reference not set to an instance of an object." Source="Infragistics2.Win.UltraWinExplorerBar.v7.3" StackTrace: at Infragistics.Win.UltraWinExplorerBar.UltraExplorerBar.ItemFromPoint(Point point) at Infragistics.Win.UltraWinExplorerBar.UltraExplorerBar.OnDoubleClick(EventArgs e) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(ApplicationContext context) at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[ commandLine) at InFocus.My.MyApplication.Main(String[ Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[ args) at System.AppDomain.nExecuteAssembly(Assembly assembly, String[ args) at System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel) at System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly() at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[ activationCustomData) at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()
This is a known issue and is fixed in the latest Hot Fix.
Where can I down load Hot fix? I get following randomly.
System.NullReferenceException: Object reference not set to an instance of an object. at Infragistics.Win.UltraWinExplorerBar.UltraExplorerBar.ItemFromPoint(Point point) at Infragistics.Win.UltraWinExplorerBar.UltraExplorerBar.Infragistics.Win.UltraWinExplorerBar.IItemContainer.ItemFromPoint(Point point) at Infragistics.Win.UltraWinExplorerBar.UltraExplorerBar.OnMouseDownHelper(IItemContainer itemContainer, MouseEventArgs e) at Infragistics.Win.UltraWinExplorerBar.UltraExplorerBar.OnMouseDown(MouseEventArgs e) at System.Windows.Forms.Control.WmMouseDown(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(Form mainForm) at Infragistics.Practices.CompositeUI.WinForms.IGFormShellApplication`2.Start() at Microsoft.Practices.CompositeUI.CabApplication`1.Run() at Aramark.Applications.HealthConnect.WinUI.Infrastructure.Shell.ShellApplication.RunInDebugMode() in
Yeah, this is definately fixed in the hot fix. You can get the Hot Fix on the"My Keys and Downloads" page once you log into the site.
I applied hotfix. In my project we do not reference dll from GAC but copy in one folder and reference it that way. After installing hotfix do I need to copy updated dlls from GAC to my reference folder and compile? After installing hot fix I still see this issue.
Yes, if your files are local, you probably need to re-copy them.