// Download the feed.
        var feed = await GetMSDNBlogFeed();

        // Update the live tile with the feed items.
        UpdateTile( feed );

        // Inform the system that the task is finished.
        deferral.Complete();
    }

    private static async Task<SyndicationFeed> GetMSDNBlogFeed()
    {
        SyndicationFeed feed = null;

        try
        {
            // Create a syndication client that downloads the feed.  
            SyndicationClient client = new SyndicationClient();
            client.BypassCacheOnRetrieve = true;
            client.SetRequestHeader( customHeaderName, customHeaderValue );

            // Download the feed.
            feed = await client.RetrieveFeedAsync( new Uri( feedUrl ) );
        }
        catch( Exception ex )
        {
            Debug.WriteLine( ex.ToString() );
        }

        return feed;
    }

    private static void UpdateTile( SyndicationFeed feed )
    {
        // Create a tile update manager for the specified syndication feed.
        var updater = TileUpdateManager.CreateTileUpdaterForApplication();
        updater.EnableNotificationQueue( true );
        updater.Clear();

        // Keep track of the number feed items that get tile notifications.
        int itemCount = 0;

        // Create a tile notification for each feed item.
        foreach( var item in feed.Items )
        {
            XmlDocument tileXml = TileUpdateManager.GetTemplateContent( TileTemplateType.TileWideText03 );

            var title = item.Title;
            string titleText = title.Text == null ? String.Empty : title.Text;
            tileXml.GetElementsByTagName( textElementName )[0].InnerText = titleText;

            // Create a new tile notification.
            updater.Update( new TileNotification( tileXml ) );

            // Don't create more than 5 notifications.
            if( itemCount++ > 5 ) break;
        }
    }

    // Although most HTTP servers do not require User-Agent header, others will reject the request or return
    // a different response if this header is missing. Use SetRequestHeader() to add custom headers.
    static string customHeaderName = "User-Agent";
    static string customHeaderValue = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)";

    static string textElementName = "text";
    static string feedUrl = @"http://blogs.msdn.com/b/MainFeed.aspx?Type=BlogsOnly";
} }