void playerSource_MotionFrameAvailable(object sender, MotionFrameAvailableEventArgs e)
 {
     DisplayFrame(e.MotionFrame);
 }
 void playerSource_MotionFrameAvailable(object sender, MotionFrameAvailableEventArgs e)
 {
     savedFrameId = e.MotionFrame.Id;
     DisplayFrame(e.MotionFrame);
 }