读取chinanews新闻列表及内容

string[] urilist ={ "http://www.chinanews.com/rss/scroll-news.xml%22,//热点
                            "http://www.chinanews.com/rss/finance.xml%22,//财经
                            "http://www.chinanews.com/rss/sports.xml%22,//体育
                            "http://www.chinanews.com/rss/ent.xml%22,//娱乐
                            "http://www.chinanews.com/rss/health.xml%22,//健康
                            "http://www.chinanews.com/rss/auto.xml%22,//汽车
                            "http://www.chinanews.com/rss/society.xml%22,//社会
                     };

 private void ReadNews(string uri, ushort type)
        {
            try
            {
                string xml = NetHelper.ReadHtml(uri, Encoding.GetEncoding("gb2312"));
                XmlDocument doc = new XmlDocument();
                doc.LoadXml(xml);
                Dictionary<ushort, NewsEntity> newslist = new Dictionary<ushort, NewsEntity>();
                XmlNodeList list = doc.SelectNodes("rss/channel/item");
                for (int i = 0; i < list.Count; i++)
                {
                    string title = System.Helpers.XmlHelper.GetChileNode(list[i], "title").InnerText.Replace("(图)", "").Replace("(组图)", "").Replace("（图）", "");
                    string link = System.Helpers.XmlHelper.GetChileNode(list[i], "link").InnerText;
                    string result = "";
                    int end = 0;
                    string html = NetHelper.ReadHtml(link, Encoding.Default);
                    int start = html.IndexOf("<div class=left_zw>");
                    if (start > 0)
                        end = html.IndexOf("<!--正文-->", start);
                    result = html.Substring(start, end - start);

                    int _end = 0;
                    int _start = result.IndexOf(@"<div >string.IsNullOrEmpty(result))
                    {
                        

                    }
                }
                         

　　　　　　  }
            catch
            {
                

            }

        }