private void MediaElement_MediaEnded(object sender, RoutedEventArgs e)  {      ((MediaElement)sender).Position=((MediaElement)sender).Position.Add(TimeSpan.FromMilliseconds(1));  }

xmlns:wfi="clr-namespace:System.Windows.Forms.Integration;assembly=WindowsFormsIntegration"  xmlns:winForms="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"

void MainWindow_Loaded(object sender, RoutedEventArgs e)    {        this.PictureOfGif.Image = System.Drawing.Image.FromFile("images/129.gif");    }

xmlns:gif="http://wpfanimatedgif.codeplex.com"