WPF 解决界面卡顿问题 DoEvent

public static void DoEvents()
{
    Application.Current.Dispatcher.Invoke(DispatcherPriority.Render,
                                          new Action(delegate { }));
}

public void DoEvents()
{
    DispatcherFrame frame = new DispatcherFrame();
    Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Background,
        new DispatcherOperationCallback(ExitFrame), frame);
    Dispatcher.PushFrame(frame);
}

public object ExitFrame(object f)
{
    ((DispatcherFrame)f).Continue = false;

    return null;
}

public static void DoEvents()
{
    var frame = new DispatcherFrame();
    Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Background,
        new DispatcherOperationCallback(
            delegate (object f)
            {
                ((DispatcherFrame)f).Continue = false;
                return null;
            }),frame);
    Dispatcher.PushFrame(frame);
}