Right Click exception on workflow designer.

Question

We are designing our workflow with Visual Studio 2011.

When we try to open context menu with menu with right click we get below exception :

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Workflow Designer
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ArgumentException:
An item with the same key has already been added.
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   at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
   at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
   at System.Activities.Presentation.Xaml.ObjectToSourceLocationMapping.UpdateSourceLocationToModelItemMapping(IEnumerable`1 modelItemsOnDesigner)
   at System.Activities.Presentation.Xaml.ObjectToSourceLocationMapping.EnsureUpdated()
   at System.Activities.Presentation.Debug.DebuggerService.EnsureSourceLocationUpdated()
   at System.Activities.Presentation.Debug.DebuggerService.GetSourceLocationFromModelItem(ModelItem modelItem)
   at System.Activities.Presentation.Debug.DebuggerService.get_SelectedLocation()
   at System.Activities.Presentation.View.DesignerView.<InitializeMenuActions>b__14(WorkflowViewElement selection)
   at System.Activities.Presentation.View.DesignerView.OnInsertBreakpointMenuLoaded(Object sender, RoutedEventArgs e)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
   at System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)
   at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root)
   at MS.Internal.LoadedOrUnloadedOperation.DoWork()
   at System.Windows.Media.MediaContext.FireLoadedPendingCallbacks()
   at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
   at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
   at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
   at System.Windows.Media.MediaContext.Resize(ICompositionTarget resizedCompositionTarget)
   at System.Windows.Interop.HwndTarget.OnResize()
   at System.Windows.Interop.HwndTarget.HandleMessage(WindowMessage msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
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Answer 1

Hi,

Generally this exception is caused by specific Xaml file, could you please post the code of the Xaml file here? Thanks.

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Leo Tang [MSFT]
MSDN Community Support | Feedback to us
Get or Request Code Sample from Microsoft
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Answer 2

It is long file (more than 1 mb) so I add it to skydrive 

https://skydrive.live.com/?cid=44f63db1d9cbbab6&resid=44F63DB1D9CBBAB6!621&id=44F63DB1D9CBBAB6!621

Workflow service is "Loan.xamlx".

Answer 3

Hi,

Thanks for posting! Unfortunately, I can't load the activity in designer due to the custom assemblies. If you can reproduce this issue with a simple project, you can send it to me at: liangliang(dot)tang(at)hotmail(dot)com.

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Leo Tang [MSFT]
MSDN Community Support | Feedback to us
Get or Request Code Sample from Microsoft
Please remember to mark the replies as answers if they help and unmark them if they provide no help.