public static string GetSyndicationFeed(this IEnumerable <Notification> notifications, string contentType) { var feed = new SyndicationFeed("System notification", "Publishes system notifications", new Uri("http://localhost")); feed.Authors.Add(new SyndicationPerson("*****@*****.**", "Testor Testorsson", "http://localhost")); feed.Links.Add(SyndicationLink.CreateSelfLink(new Uri(HttpContext.Current.Request.Url.AbsoluteUri), "application/atom+xml")); feed.Items = notifications.ASyndicationItems(feed); var stringWriter = new StringWriter(); XmlWriter feedWriter = XmlWriter.Create(stringWriter, new XmlWriterSettings { OmitXmlDeclaration = true }); feed.Copyright = SyndicationContent.CreatePlaintextContent("Copyright hygia"); feed.Language = "en-us"; if (contentType == ContentTypes.Atom) { feed.SaveAsAtom10(feedWriter); } else { feed.SaveAsRss20(feedWriter); } feedWriter.Close(); return(stringWriter.ToString()); }