Updating a MediaElement display after seek

Question

I've got an OOB app playing a video loaded from disk in a MediaElement. I want to do two things:

• When the video is closed, I want to stop it. When it opens again, I want it to be displaying the first frame.
• When the video is over, I want to seek back to the first frame and display it.

I can change the position of the video by setting the position to zero, and when I resume the video it starts from the beginning, but in the meantime the previous frame is still displayed.

For example, when the video is closed in the UI, I do this:

                    _MediaElement.Position = TimeSpan.Zero;
                    _MediaElement.Stop();

When I reopen the video in the UI, the MediaElement is displaying the frame that it was on when it closed. When I hit play again, it does start from the beginning.

How can I force an update of the display after setting the Position property?