public FriendPage()
 {
     client.GetImageByUserIdCompleted += new EventHandler<GetImageByUserIdCompletedEventArgs>(client_GetImageByUserIdCompleted);
     int userId = (App.Current as App).UserId;
     InitializeComponent();
     vm = new FriendVM(userId, 
         delegate {list_PostResourse.ItemsSource = vm.list_PostModel; },
         delegate { list_Achievement.ItemsSource = vm.list_AchievementModel; },
         delegate {
                   foreach (UnloadModel photo in vm.list_UnloadModel)
                  {
                   Friend_Photo control = new Friend_Photo(client) { ItemId = photo.ItemId, Describe=photo.Describe, Name = photo.Name+" "};
                   control.Margin = new Thickness(5);
                   wp_Photo.Children.Add(control);
                  }
     });
     callback(); 
 }
        void callback()
        {
            list_PostResourse.ItemsSource = vm.list_PostModel;
            list_Achievement.ItemsSource = vm.list_AchievementModel;
            foreach (UnloadModel photo in vm.list_UnloadModel)
            {
                Friend_Photo control = new Friend_Photo(client) { Describe = photo.Describe, ItemId = photo.ItemId, Name = photo.Name + " " };
                control.Margin = new Thickness(5);
                //HubTile hubTile = new HubTile()
                //{
                //    //Source="/Images/Dessert.jpg",
                //    Tag=photo.ItemId,
                //    Title=photo.Name,
                //    Notification=photo.Describe,
                //    DisplayNotification=true,
                //    GroupTag="Food"
                //};


                wp_Photo.Children.Add(control);
            }
        }