Here’s an easy way to expose feeds using the new System.ServiceModel.Syndication namespace.
Instead of dealing with XmlDocument the Rss20FeedFormatter class will be responsible to format the correct xml content for our feed.
1: SyndicationFeed feed = GetSyndicationFeed();
2: Rss20FeedFormatter rssFormatter = new Rss20FeedFormatter(feed);
3: using (XmlWriter writer = XmlWriter.Create(context.Response.OutputStream))
4: {
5: rssFormatter.WriteTo(writer);
6: writer.Flush();
7: }
The feed object is composed by properties like the author and the language but, more important, by the list of the feed categories and the items (posts, articles etc).
1: SyndicationFeed newsFeed = new SyndicationFeed("Tryingtocode", "Sample RSS Feed", new Uri("http://tryingtocode.altervista.org"));
2: newsFeed.Authors.Add(new SyndicationPerson("mail", "author name", "http://link"));
3: newsFeed.Language = "en-US";
4: newsFeed.Generator = "Custom RSS generator";
5: newsFeed.Copyright = new TextSyndicationContent("© Copyright 2010");
6: // Add categories
7: List<SyndicationCategory> categories = GetAllSyndicationCategories();
8: foreach(SyndicationCategory category in categories)
9: {
10: newsFeed.Categories.Add(category);
11: }
12: newsFeed.Items = GetAllSyndicationItems();
13:
14: return newsFeed;
Here’s how the page will look:
Source code: RssGenerator sample
