We've begun running into the following exception in our WPF application. It happens when we right-click a UserControl that has no event handler for a right-click. The UserControl is hosted inside an "AvalonDock:DocumentContent".
{"Element already has a logical parent. It must be detached from the old parent before it is attached to a new one."}
[System.InvalidOperationException]: {"Element already has a logical parent. It must be detached from the old parent before it is attached to a new one."}
Data: {System.Collections.ListDictionaryInternal}
HelpLink: null
InnerException: null
Message: "Element already has a logical parent. It must be detached from the old parent before it is attached to a new one."
Source: "PresentationFramework"
StackTrace: " at MS.Internal.Controls.InnerItemCollectionView.AssertPristineModelChild(Object item)
at MS.Internal.Controls.InnerItemCollectionView.Insert(Int32 index, Object item)
at System.Windows.Controls.ItemCollection.Insert(Int32 insertIndex, Object insertItem)
at AvalonDock.DocumentContent.Activate()
at AvalonDock.ManagedContent.OnMouseDown(MouseButtonEventArgs e)
at System.Windows.UIElement.OnMouseDownThunk(Object sender, MouseButtonEventArgs e)
at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
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.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(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)"
TargetSite: {System.Windows.DependencyObject AssertPristineModelChild(System.Object)}
Has anyone else run into this? Is it a known issue or problem?
Thanks!
Brad.