<MediaElement x:Name="myGif" MediaEnded="myGif_MediaEnded" UnloadedBehavior="Manual" Source="file://C:\waiting.GIF" LoadedBehavior="Play" Stretch="None"/> private void myGif_MediaEnded(object sender, RoutedEventArgs e)
{
myGif.Position = new TimeSpan(0, 0, 1);
myGif.Play();
}
原文：http://www.cnblogs.com/saybookcat/p/5191065.html