Answer 1

Answer 2

这有效：）

    public MainWindow()
    {
        InitializeComponent();
        DispatcherTimer dispatcherTimer = new DispatcherTimer();
        dispatcherTimer.Tick += new EventHandler(dispatcherTimer_Tick);
        dispatcherTimer.Interval = new TimeSpan(0, 0, 1);
        dispatcherTimer.Start();


    }

    private void dispatcherTimer_Tick(object sender, EventArgs e)
    {
             //Do Something
    }

    private void Button_Click_1(object sender, RoutedEventArgs e)
    {

        Dispatcher.InvokeShutdown();
    }