Question

I want to make a WPF pogram like this:
When run the program,the main window shows,five seconds later,another window shows.
How can I achieve it? I have seen the timer,but I can’t do it.

Answer 1

Thanks to @Kshitij Mehta for pointer regarding DispatcherTimer.

In your MainWindow, define a DispatcherTimer and pop up another window on Tick like this –

    DispatcherTimer timer = null;
    void StartTimer()
    {
        timer = new DispatcherTimer();
        timer.Interval = TimeSpan.FromSeconds(5);
        timer.Tick += new EventHandler(timer_Elapsed);
        timer.Start();
    }

    void timer_Elapsed(object sender, EventArgs e)
    {
        timer.Stop();

        AnotherWindow window = new AnotherWindow();
        window.Show();
    }

Call StartTimer() in your MainWindow constructor.

    public MainWindow
    {
        InitializeComponent();
        StartTimer();
    }