Windows Phone 学习 调用多媒体

  <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">            <Button Content="播放媒体文件" VerticalAlignment="Top" Click="OnPlay"/>        </Grid>

    private void OnPlay(object sender, RoutedEventArgs e)        {            // 实例化启动器对象            MediaPlayerLauncher MyMediaPlayer = new MediaPlayerLauncher();            // 媒体文件来源为应用程序安装目录            MyMediaPlayer.Location = MediaLocationType.Install;            // 显示“暂停”和“停止”两个按钮            MyMediaPlayer.Controls = MediaPlaybackControls.Pause | MediaPlaybackControls.Stop;            // 媒体播放器纵向显示            MyMediaPlayer.Orientation = MediaPlayerOrientation.Portrait;            // 设置要播放的媒体文件            MyMediaPlayer.Media = new Uri("test.mp3", UriKind.Relative);            // 显示播放器            MyMediaPlayer.Show();        }