我使用 WPF 里的 MediaPlayer 类 重复播放一段 WMV 视频 ，长时间播放会发生 Mediaplayer 黑屏的现象，并且不会有播放错误和播放完成事件的产生，这是为什么？

Question

代码如下:
private void Initialize(string videopath)
{
               MediaPlayer player = new MediaPlayer();
                player.MediaFailed += new EventHandler<ExceptionEventArgs>(Media_MediaFailed);
                player.MediaOpened += new EventHandler(Media_Opened);
                player.MediaEnded += new EventHandler(Media_PlayEnded);
                player.Open(new Uri(videopath));
                VideoDrawing videodrawing = new VideoDrawing();
                videodrawing .Rect = new Rect(0, 0, 640, 480);
                aVideoDrawing.Player = player;
}

 private void Media_Opened(object sender, EventArgs e)
 {
            MediaPlayer player = sender as MediaPlayer;
            if (player.Source == null)
                return;
            player.Play();       
 }

 private void Media_PlayEnded(object sender, EventArgs e)
 {
            MediaPlayer player = sender as MediaPlayer;
           srting videopath = player.Source.OriginalString;
            Initialize(videopath);     
 }

private  void Media_MediaFailed(object sender, ExceptionEventArgs e)
{  
             Console.WriteLine("Error ocored:" + e.Message);
}

Answer 1

参照下这里
http://blog.csdn.net/tolot/archive/2006/11/02/1362935.aspx

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努力+方法=成功

Answer 2

不好意思，没有说清楚。
我使用的是WPF 里的 MediaPLayer 类，这个是由FrameWorker 3.5 支持的
查了下资料，说是必须有MediaPlayer 10 OCX 支持
编程平台是 windows vista ,vs2008 , frameworker 3.5 sp1