Playing with DirectX9 SDK without results

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DirectX

C#3.5

Hey guys,
I am trying to play a video in a Form with DirectX 9 but it doesn't work. :(
I have no experience with DirectX so I thought I have to start with a simple videoplayer.
I've got a video in my "Content" folder of the project which conatins an ".avi" file.
Heres my code:

private void OpenVideo()
{
    try
    {
        Video stream = new Video(@"Content\Video.avi");
        stream.Owner = panelPlay;
        stream.Size = new Size(400, 400);
        stream.Play();
    }

Debugging works but the form is still blank. Can anyone help?

Edit: Okay I've got another problem.
I've forgot to call the method (shame on me).
Now the debugger gives an error "loader lock". The search in a famous search engine gives following results:
http://www.thezbuffer.com/articles/304.aspx[^]

I've tried to fix it with the workaround but now the debugger throws: "Application error".
Anyone knows how to fix it?