public async void PlayMv(MVData mVData)
        {
            mvt.Interval     = 1000;
            mvt.Tick        += Mvt_Tick;
            MVplaying        = true;
            Title            = mVData.name;
            MvPlay_Tb.Text   = mVData.name;
            MvPlay_Tb.Uid    = mVData.id;
            MvPlay_Desc.Text = await MusicLib.GetMVDesc(mVData.id);

            MvPlay_ME.Source = new Uri(await MusicLib.GetMVUrl(mVData.id));
            MvPlay_ME.Play();
            mvpath.Data = Geometry.Parse(mvpause);
            mvt.Start();
            //加载评论
            List <MusicPL> data = await MusicLib.GetMVPL(MvPlay_Tb.Uid);

            MVPlList.Children.Clear();
            foreach (var dt in data)
            {
                MVPlList.Children.Add(new PlControl(dt)
                {
                    Margin = new Thickness(10, 0, 0, 20)
                });
            }
            Activate();
            Topmost = false;
            double ps = ActualWidth / MvPlay_ME.NaturalVideoWidth;

            MV.Height = MvPlay_ME.NaturalVideoHeight * ps;
        }
 private void Mvplay_plps_MouseDown(object sender, MouseButtonEventArgs e)
 {
     if (MVplaying)
     {
         MVplaying = false;
         MvPlay_ME.Pause();
         mvpath.Data = Geometry.Parse(mvplay);
     }
     else
     {
         MVplaying = true;
         MvPlay_ME.Play();
         mvpath.Data = Geometry.Parse(mvpause);
     }
 }