private void SearchTextBox_KeyUp(object sender, KeyEventArgs e)
        {
            var st = SearchTextBox.Text;

            if (string.IsNullOrWhiteSpace(st))
            {
                DownLoadedMusicDataGrid.DataContext = DownLoadedList.Where(m => m.Title.Contains(st) || m.Album.Contains(st) || m.Singer.Contains(st));
            }
            else
            {
                DownLoadedMusicDataGrid.DataContext = DownLoadedList;
            }
        }
        private void SearchTextBox_KeyUp(object sender, System.Windows.Input.KeyEventArgs e)
        {
            var search = SearchTextBox.Text.ToLower();

            if (search.Length > 0)
            {
                LocalMusicDataGrid.DataContext = LocalMusicList.Where(m => m.Singer.ToLower().Contains(search) || m.Title.ToLower().Contains(search) || m.Album.ToLower().Contains(search));
            }
            else
            {
                LocalMusicDataGrid.DataContext = LocalMusicList;
            }
        }