public static async Task <ObservableCollection <apergiaFeedItem> > getFeedsAsync(string url)
        {
            //The web object that will retrieve our feeds..
            SyndicationClient client = new SyndicationClient();
            //The URL of our feeds..
            Uri feedUri = new Uri(url);
            //Retrieve async the feeds..
            var feed = await client.RetrieveFeedAsync(feedUri);

            //The list of our feeds..
            ObservableCollection <apergiaFeedItem> feedData = new ObservableCollection <apergiaFeedItem>();

            //Fill up the list with each feed content..
            foreach (SyndicationItem item in feed.Items)
            {
                apergiaFeedItem af = new apergiaFeedItem();
                af.PubDate = item.PublishedDate.DateTime;
                af.Title   = item.Title.Text;
                af.Summary = extractSummary(item.Summary.Text);
                try { af.Link = item.Links[0].Uri; }
                catch (Exception) { }

                feedData.Add(af);
            }
            return(feedData);
        }
        public static async Task<ObservableCollection<apergiaFeedItem>> getFeedsAsync(string url)
        {
            //The web object that will retrieve our feeds..
            SyndicationClient client = new SyndicationClient();
            //The URL of our feeds..
            Uri feedUri = new Uri(url);
            //Retrieve async the feeds..
            var feed = await client.RetrieveFeedAsync(feedUri);
            //The list of our feeds..
            ObservableCollection<apergiaFeedItem> feedData = new ObservableCollection<apergiaFeedItem>();
            //Fill up the list with each feed content..
            foreach (SyndicationItem item in feed.Items)
            {
                apergiaFeedItem af = new apergiaFeedItem();
                af.PubDate = item.PublishedDate.DateTime;
                af.Title = item.Title.Text;
                af.Summary = extractSummary(item.Summary.Text);
                try { af.Link = item.Links[0].Uri; }
                catch (Exception) { }

                feedData.Add(af);
            }
            return feedData;
        }