Loading new image each second

Question

I need to load each second (or two) new image.

Following code doesn't work:

System.Threading.Thread.Sleep(2000);
this.Image_LoadImage.Source = new BitmapImage(new Uri(@"D:\\connect2-1.gif"));
System.Threading.Thread.Sleep(2000);
this.Image_LoadImage.Source = new BitmapImage(new Uri(@"D:\\connect3-1.gif"));

What I see is that the app sleeps for 4 seconds and then the second image appears.

How can i do it? Thanks.

Answer 1

Use timer for this

    private System.Threading.Timer timer;
    public MainWindow()
    {
        InitializeComponent();
        timer = new System.Threading.Timer(OnTimerEllapsed, new object(), 0, 2000);
    }

    private void OnTimerEllapsed(object state)
    {
        if (!this.Dispatcher.CheckAccess())
        {
            this.Dispatcher.Invoke(new Action(LoadImages));
        }
    }

    private bool switcher;
    private void LoadImages()
    {
        string stringUri = switcher ? @"D:\\connect2-1.gif" :
                                      @"D:\\connect3-1.gif";
        this.Image_LoadImage.Source = new BitmapImage(new Uri(stringUri));

        switcher = !switcher;
    }

Answer 2

Use a timer.

Calling thread sleep is gonna block the UI thread. Found this link for you: