Display “Wait” screen in WPF

Question

I am trying to display a please wait dialog for a long running operation. The problem is since this is single threaded even though I tell the WaitScreen to display it never

Answer 1

I found a way! Thanks to this thread.

public static void ForceUIToUpdate()
{
  DispatcherFrame frame = new DispatcherFrame();

  Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Render, new DispatcherOperationCallback(delegate(object parameter)
  {
    frame.Continue = false;
    return null;
  }), null);

  Dispatcher.PushFrame(frame);
}

That function needs to be called right before the long running operation. That will then Force the UI thread to update.