/// <summary>
/// 上一曲
/// </summary>
private void LastMusic()
{
List <MusicItemViewModel> selectedItem = MusicList.Where(i => i.IsSelected == true).ToList();
if (selectedItem.Count > 0)
{
Playing = selectedItem.First();
int index = MusicList.IndexOf(Playing);
if (index >= 1)
{
Playing.IsSelected = false;
Playing = MusicList[--index];
Playing.IsSelected = true;
System.Threading.Thread.Sleep(100);
PlayMusic(Playing.Music);
}
else
{
Playing.IsSelected = false;
Playing = MusicList.Last();
Playing.IsSelected = true;
System.Threading.Thread.Sleep(100);
PlayMusic(Playing.Music);
}
PlayIcon = new BitmapImage(new Uri("/Image/full_pause.png", UriKind.Relative));
}
}