Getting <link> parameters from RSS Field

I want to add a link tag with this method I could take

        XDocument xmlFile = XDocument.Load(@"http://www.test.ir/fa/rss.aspx?kind=-1");
        var model = new List<rssResult>();
        foreach (XElement element in xmlFile.Descendants("title"))
        {
            String words = element.ToString();
            string a = Regex.Replace(words, "<.*?>", string.Empty);
            model.Add(new rssResult { title = a, link = ? });
        }