private void UserControl_Loaded(object sender, RoutedEventArgs e)
 {
     if (loadtimes == 0)
     {
         HTTP.Get(ServicePath.GalleryAshx, new Action <string>((str) =>
         {
             ObservableCollection <GalleryModel> list = Newtonsoft.Json.JsonConvert.DeserializeObject <ObservableCollection <GalleryModel> >(str);
             Dispatcher.Invoke(new Action(() => {
                 foreach (var item in list)
                 {
                     HTTP.DownImage(item.Name, item.Image, new Action <string>((path) =>
                     {
                         item.Image = path;
                     }));
                     item.Image = "";
                     ShowList.Add(item);
                 }
             }));
         }), new Action <Exception>((ex) => { }));
     }
     loadtimes++;
 }