加载rss feed时Windows手机崩溃

Question

我有一些代码可以将rss feed加载到我的WindowsPhone应用程序中：

var result = e.Result;
    result = result.Replace("\t", string.Empty);
    result = result.Replace("\n", string.Empty);

    var rssItems = XDocument.Parse(result.Replace("dc:creator", "creator")).Descendants("item").Select(
         x => new RssItem()
              {
                  Title = (string)x.Element("title"),
                  Description = (string)x.Element("description"),
                  Link = (string)x.Element("link"),
                  Author = (string)x.Element("creator"),
                  Comments = (string)x.Element("comments"),
                  PubDate = ParseNewsDateToStringFormatExtended(Convert.ToDateTime((string)x.Element("pubDate"))),
                  ThumbnailPart = stripImagePathFromDescription((string)x.Element("description").Value.ToString()),
                  StrippedHtml = strippedHtmlConversion((string)x.Element("title"), (string)x.Element("creator"), ParseNewsDateToStringFormatExtended(Convert.ToDateTime((string)x.Element("pubDate"))), (string)x.Element("description").Value.ToString())
                                    }
                                ).ToList();
                        success(rssItems);

当它加载包含此符号«或»的Feed时，它会崩溃。如何让我的应用程序能够阅读这些符号？

编辑：这是我的RSS Feed中的一个元素：

<item>
   <title>Norges «skjulte perle» utvider</title>

正如你可以看到项目标题中有一个«»。我知道这就是崩溃的原因。但为什么？以及如何处理这些符号？