public MainPage() {
        InitializeComponent();
        Loaded += new System.Windows.RoutedEventHandler(MainPage_Loaded);
    }

    private void MainPage_Loaded(object sender, System.Windows.RoutedEventArgs e) {
        var newsFeedWcfClient = new NewsFeedWCFClient();
        newsFeedWcfClient.GetNewsFeedItemsCompleted += newsFeedWcfClient_GetNewsFeedItemsCompleted;
        newsFeedWcfClient.GetNewsFeedItemsAsync();
    }

    void newsFeedWcfClient_GetNewsFeedItemsCompleted(object sender, GetNewsFeedItemsCompletedEventArgs e) {
        var source = (IList<NewsFeed>)e.Result;
        IList<CustomNewsFeed> customNewsFeeds = new List<CustomNewsFeed>();
        foreach (var item in source) {
            customNewsFeeds.Add(new CustomNewsFeed() {
                ProductID = item.Products.ProductID,
                ProductTitle = item.Products.Title,
                Status = item.Text,
                Thumb = string.Format("{0}/{1}", item.Products.Product_Photos.Select(pp => pp.PhotoPath).FirstOrDefault(), item.Products.Product_Photos.Select(pp => pp.PhotoName).FirstOrDefault()),
                UserID = item.User.Id,
                UserName = item.User.Username
            });
        }
        NewsFeedLB.ItemsSource = customNewsFeeds;
    }