Silverlight读取xml

<?xml version="1.0" encoding="utf-8" ?>
 <projects>
 <project id="1" title="nasa.wang @ cnblogs" category="web" hit="23" createdate="2008-4-9" converpic="null" iscommend="true" votenum="8" score="10">
 </project>
 </projects>

 public class project
     {
 public int id { get; set; }
 public string title { get; set; }
 public string category { get; set; }
 public int hit { get; set; }
 public DateTime createdate { get; set; }
 public string converpic { get; set; }
 public bool iscommend { get; set; }
 public int votenum { get; set; }
 public int score { get; set; }
 //public IList<pitem> pitems { get; set; }
 //public IList<pcomment> pcomments { get; set; }
     }

 public Page()
         {
             InitializeComponent();
             WebClient client = new WebClient();
             client.DownloadStringAsync(new Uri(HtmlPage.Document.DocumentUri, "projects.xml"));
             client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
         }
 
 void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
         {
             XmlReader reader = XmlReader.Create(new StringReader(e.Result));
             XDocument document = XDocument.Load(reader);
             var projects = from f in document.Descendants("project")
                            select new project
                            {
                                id = int.Parse(f.Attribute("id").Value),
                                title = f.Attribute("title").Value,
                                category = f.Attribute("category").Value,
                                hit = int.Parse(f.Attribute("hit").Value),
                                createdate = DateTime.Parse(f.Attribute("createdate").Value),
                                converpic = f.Attribute("converpic").Value,
                                iscommend = bool.Parse(f.Attribute("iscommend").Value),
                                votenum = int.Parse(f.Attribute("votenum").Value),
                                score = int.Parse(f.Attribute("score").Value),
                            };
             List<project> _projects = new List<project>();
             _projects.AddRange(projects);
             txtStatus.Text ="read success for " + _projects[0].title;
         }