使用LINQ读取RSS，比传统的C#2.0方法节省了很多代码

        private List<RssNews> GetNews()
        {
            List<RssNews> list = new List<RssNews>();

            //http://services.community.microsoft.com/feeds/feed/CSharpHeadlines
            string rss = ConfigurationManager.AppSettings["NewsFeed"];

            if (!string.IsNullOrWhiteSpace(rss))
            {
                try
                {
                    var feed = XDocument.Load(rss, LoadOptions.PreserveWhitespace);
                    var items = from item in feed.Root.Element("channel").Elements("item").Take(5)
                                select new RssNews()
                                {
                                    title = item.Element("title").Value,
                                    link = item.Element("link").Value.ToSEOLink(),
                                    description = item.Element("description").Value,
                                    pubDate = item.Element("pubDate").Value
                                };

                    list = items.ToList();
                }
                catch { }
            }


            return list;
        }