How to get link video from link html?

See more:

WPF

C#3.5

Windows-Phone-8

I get a link : http://www.mtv.com/artists/kirsten-arian/[^]

In page, there are one video.

How to get link this video follow "http://www.mtv.com/artists/kirsten-arian/">http://www.mtv.com/artists/kirsten-arian/". or other website.

Everyone asked: received response from website to sever. but I don't know how to do that?

I'm use c#.

<pre lang="cs">var request = WebRequest.Create(videoInforUrl); Debug.WriteLine(request);
               var response = await request.GetResponseAsync(); Debug.WriteLine(response);