Inheritance: System.Windows.Controls.UserControl
 void ITimeLineSliderController.SeekPosition(TimeSpan sp)
 {
     MediaElementControl.SeekToMediaPosition(sp);
 }
 void IMediaControllerBase.SeekBySeconds(int seconds)
 {
     MediaElementControl.SeekBySeconds(seconds);
 }
 void IMediaControllerBase.Stop()
 {
     MediaElementControl.Stop();
 }
 void IMediaControllerBase.Pause()
 {
     MediaElementControl.Pause();
 }
 void IMediaControllerBase.Play()
 {
     MediaElementControl.Play();
 }
 void ITimeLineSliderController.ResetToDefaultNode()
 {
     MediaElementControl.ResetToDefaultNode();
 }