public void PlayFromString(string path)
{
this.source_ = path;
MediaItem item = MediaItem.Create(path);
if (item != null)
{
PlaylistBox.Items.Clear();
PlaylistBox.Items.Add(item);
ResetIndexLecture();
SelectIndexLecture(0);
this.state_ = State.STOP;
PlaylistBox_SourceUpdated();
MediaPlayer.Stop();
this.state_ = State.STOP;
this.ButtonPlay_Click(null, null);
}
}