private void OnAlbumListEventPublish(AlbumListInfo info)
 {
     if (info.Type == AlbumListType.Category)
     {
         FlyoutVisible.Instance.IsCategoryDetailShow = true;
         MessageBox.Show("category");
     }
 }
 private bool OnAlbumListEventFilter(AlbumListInfo info)
 {
     return this.LastKey == info.Key;
 }