在 MS.Win32.SafeNativeMethods.SetTimer(HandleRef hWnd, Int32 nIDEvent, Int32 uElapse)
   在 System.Windows.Threading.Dispatcher.SetWin32Timer(Int32 dueTimeInTicks)
   在 System.Windows.Threading.Dispatcher.UpdateWin32TimerFromDispatcherThread(Object unused)
   在 System.Windows.Threading.Dispatcher.PromoteTimers(Int32 currentTimeInTicks)
   在 System.Windows.Threading.DispatcherOperation.InvokeImpl()
   在 MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(Object obj)
   在 System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   在 MS.Internal.CulturePreservingExecutionContext.Run(CulturePreservingExecutionContext executionContext, ContextCallback callback, Object state)
   在 System.Windows.Threading.DispatcherOperation.Invoke()
   在 System.Windows.Threading.Dispatcher.ProcessQueue()
   在 System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   在 MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   在 MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   在 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   在 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)