private void favoriList_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            FavoriData drv = (FavoriData)favoriList.SelectedItem;

            if (drv != null)
            {
                if (drv.IsTopic == "Visible")
                {
                    NavigationService.Navigate(new Uri("/forum/ForumPost.xaml?sforum_id= " + drv.sforumID + "&topic_id=" + drv.topicID, UriKind.Relative));
                }
                else if (drv.IsTopic == "Collapsed" && drv.sforumID != "0")
                {
                    NavigationService.Navigate(new Uri("/forum/ForumTopic.xaml?sforum_id=" + drv.sforumID, UriKind.Relative));
                }
            }

            favoriList.SelectedIndex = -1;
        }
        private void unfavori_Click(object sender, RoutedEventArgs e)
        {
            FavoriData drv = (sender as MenuItem).DataContext as FavoriData;

            if (drv != null)
            {
                if (drv.IsTopic == "Visible")
                {
                    string delete_this = classes.General.ReadFavori("fav_topic.txt").Replace(drv.sforumID + "|" + drv.topicID + "|" + drv.topicTitle + "|" + drv.topicAuthorInfo + "|" + drv.topicAuthorAvatar + "#", "");
                    classes.General.WriteFavori("fav_topic.txt", delete_this);
                }
                else if (drv.IsTopic == "Collapsed" && drv.sforumID != "0")
                {
                    string delete_this = classes.General.ReadFavori("fav_forum.txt").Replace(drv.sforumID + "|" + drv.topicTitle + "#", "");
                    classes.General.WriteFavori("fav_forum.txt", delete_this);
                }

                ds.Clear();
                GetFavori();
            }
        }