private async void BtYouTube_Click(object sender, RoutedEventArgs e)
        {
            //await this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal,
            //                         async () => await Task.Delay(1000));
            //await Window.Current.Dispatcher.RunAsync(CoreDispatcherPriority.Normal,
            //                         async () => await Task.Delay(1000));
            var youtubeurl = YouTube.GetYouTubeId("http://www.youtube.com/watch?v=eAX85PXl408");

            try
            {
                //获取相对应源的Uri地址
                //普通 视频测试
                //var url = await YouTube.GetVideoUriAsync(youtubeurl, YouTubeQuality.QualityMP3_FLV_44KHZ);
                //长视频 例如金瓶梅
                //var url = await YouTube.GetVideoUriAsync("rtD-8mQnzRs", YouTubeQuality.Quality720P_MP4);
                //vevo 视频测试 //gUVUhWUbj-Y //默认测试 LrUvu1mlWco //KzKLd9p4x3w //-YICuUtkjlg
                var url = await YouTube.GetVideoUriAsync("LrUvu1mlWco", YouTubeQuality.Quality720P_MP4);

                me.Source = url.Uri;
                me.Play();

                //获取所有源的Uri地址列表
                //youtubeurl = "LrUvu1mlWco";
                var uriAllList = await YouTube.GetVideoAllUrisAsync(youtubeurl, YouTubeFormat.All);

                var uriFlvOrMp3List = await YouTube.GetVideoAllUrisAsync(youtubeurl, YouTubeFormat.Flv);

                var uriMp3OrFlvList = await YouTube.GetVideoAllUrisAsync(youtubeurl, YouTubeFormat.Mp3);

                var uriMp4List = await YouTube.GetVideoAllUrisAsync(youtubeurl, YouTubeFormat.Mp4);

                var uriQualityList = await YouTube.GetVideoAllUrisAsync(youtubeurl, YouTubeFormat.YouTubeQuality);
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.Message + "无法连接到远程服务" + "Unable to connect to the remote serve");
            }
        }