0
我有資源的用戶控制如下內重用靜態資源：WPF - 上下文菜單 - 動態資源
<UserControl.Resources>
<Image x:Key="IconPrinter" Source="/PrintViewerWPF;component/Resources/Images/printer.png" />
<MenuItem x:Key="PrintDoc"
Header="Print"
Click="PrintDoc_OnClick"
Icon="{StaticResource IconPrinter}" />
<ContextMenu x:Key="MergedContextMenu">
<StaticResource ResourceKey="PrintDoc"/>
</ContextMenu>
<ContextMenu x:Key="SingleContextMenu">
<StaticResource ResourceKey="PrintDoc"/>
</ContextMenu>
<DataTemplate x:Key="mergedDocDisplayGrid">
<StackPanel StackPanel.ContextMenu="{DynamicResource MergedContextMenu}" />
</DataTemplate>
<DataTemplate x:Key="singleDocDisplayGrid">
<StackPanel StackPanel.ContextMenu="{DynamicResource SingleContextMenu}" />
</DataTemplate>
</UserControl.Resources>
的DataTemplate s的內的DevExpress FlowLayoutControl
採用我的方案，我有兩項在我的FlowLayoutControl。使用一個模板mergedDocDisplayGrid和使用singleDocDisplayGrid
在模板中正確顯示的數據，另外，和其他功能，如鼠標活動和阻力下落已成功
實現顯示在任一項目的上下文菜單工作，但如果我後來試圖表明上下文菜單中再次對其他項目我得到以下異常：
Message - Add value to collection of type 'System.Windows.Controls.ItemCollection' threw an exception.
Inner - Element already has a logical parent. It must be detached from the old parent before it is attached to a new one.
Stack Trace
at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
at System.Windows.Markup.WpfXamlLoader.LoadDeferredContent(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings parentSettings, Uri baseUri)
at System.Windows.ResourceDictionary.CreateObject(KeyRecord key)
at System.Windows.ResourceDictionary.OnGettingValue(Object key, Object& value, Boolean& canCache)
at System.Windows.ResourceDictionary.OnGettingValuePrivate(Object key, Object& value, Boolean& canCache)
at System.Windows.ResourceDictionary.GetValueWithoutLock(Object key, Boolean& canCache)
at System.Windows.ResourceDictionary.GetValue(Object key, Boolean& canCache)
at System.Windows.DeferredResourceReference.GetValue(BaseValueSourceInternal valueSource)
at System.Windows.DependencyObject.GetEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, RequestFlags requests)
at System.Windows.DependencyObject.GetValueEntry(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, RequestFlags requests)
at System.Windows.DependencyObject.GetValue(DependencyProperty dp)
at System.Windows.Controls.ContextMenuService.GetContextMenu(DependencyObject element)
at System.Windows.Controls.ContextMenuService.ContextMenuIsEnabled(DependencyObject o)
at System.Windows.Controls.ContextMenuService.OnContextMenuOpening(Object sender, ContextMenuEventArgs e)
at System.Windows.Controls.ContextMenuEventArgs.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.Controls.PopupControlService.RaiseContextMenuOpeningEvent(IInputElement source, Double x, Double y, Boolean userInitiated)
at System.Windows.Controls.PopupControlService.ProcessMouseUp(Object sender, MouseButtonEventArgs e)
at System.Windows.Controls.PopupControlService.OnPostProcessInput(Object sender, ProcessInputEventArgs e)
at System.Windows.Input.InputManager.RaiseProcessInputEventHandlers(ProcessInputEventHandler postProcessInput, ProcessInputEventArgs processInputEventArgs)
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)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows.Forms.NativeWindow.DefWndProc(Message& m)
at System.Windows.Forms.NativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.Run()
at System.Windows.Application.RunDispatcher(Object ignore)
at System.Windows.Application.RunInternal(Window window)
at System.Windows.Application.Run(Window window)
at System.Windows.Application.Run()
at Camps.PrintViewerWPF.App.Main() in C:\Dev\Camps.Printing2\trunk\Camps.Printing2\Presentation\Camps.PrintViewerWPF\obj\x86\Release\App.g.cs:line 0
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
內部異常是自我解釋，我相信，我將能夠解決這個問題在代碼背後，如何永遠我覺得必須要在XAML中正確地做到這一點，因爲重新使用菜單項對我來說很重要
任何幫助將不勝感激！謝謝