ASP.NET MVC中的RSS源

public class RssController : Controller
{
    [ActionName("rss")]
    public ActionResult GetRss()
    {
        // Create a new RSS feed
        var feed = new SyndicationFeed()
        {
            Title = new TextSyndicationContent("My RSS Feed"),
            Description = new TextSyndicationContent("This is my RSS feed"),
            LastUpdatedTime = DateTime.Now
        };

        // Create a new RSS item
        var item = new SyndicationItem()
        {
            Title = new TextSyndicationContent("My RSS Item"),
            Summary = new TextSyndicationContent("This is my RSS item"),
            LastUpdatedTime = DateTime.Now
        };

        // Add the RSS item to the RSS feed
        feed.Items.Add(item);

        // Serialize the RSS feed to XML
        var formatter = new Rss20FeedFormatter(feed);
        var settings = new XmlWriterSettings() { Indent = true };
        var sb = new StringBuilder();
        using (var writer = XmlWriter.Create(sb, settings))
        {
            formatter.WriteTo(writer);
        }

        // Return the RSS feed as XML
        return Content(sb.ToString(), "application/rss+xml");
    }
}