conversion of atom feed to rss feed

i want to convert a XML find having atom feed into rss feed. I used the following method :

public void AtomToRss20(string atomFileName, string rssFileName)    {        ConvertToRss20(ReadFeed(atomFileName), rssFileName);    }    private static void ConvertToRss20(SyndicationFeed feed, string rssFileName)    {        Rss20FeedFormatter rss2 = new Rss20FeedFormatter(feed);        XmlWriter writer = XmlWriter.Create(rssFileName);        rss2.WriteTo(writer);        // You can also use         // feed.SaveAsRss20(writer);               }    private static SyndicationFeed ReadFeed(string fileName)    {        StreamReader stream = new StreamReader(fileName);        XmlReader reader = XmlReader.Create(stream);        SyndicationFeed feed = SyndicationFeed.Load(reader);        return feed;            }

It executes successfully but when i viewed the file I found that it is incomplete and terminated with missing closing tags. Can somebody please tell the problem in this or some other method for the conversion.