推荐订阅源

            当然。只是个DEMO. 功能还是很简单。BUG  也不少。有兴趣你可以下载 自己再改改。
 界面

阅读界面：

关键代码:

 public  static ArrayList read(string url, HttpWebRequest request, bool isFirst)
        {
            Stream stream = null;
            Uri uri = new Uri(url);
            switch (uri.Scheme)
            {
                case "file":
                    break;
                case "https":
                    goto case "http";
                case "http":
                    if (request == null)
                        request = (HttpWebRequest)WebRequest.Create(uri);
                    try
                    {
                        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                        try
                        {
                            if (response.ContentEncoding != "")
                        Encoding.GetEncoding(response.ContentEncoding);
                        }
                        catch { }
                        stream = response.GetResponseStream();
                    }
                    catch (WebException we)
                    {
                    }
                    break;
            }
            ArrayList list = null;
            if (stream != null)
            {
                RssSina rssSina = new RssSina(stream);

                list= rssSina.Read(isFirst);
                rssSina.Close();
                                      }
            return list;
           
        }

分析 新浪的RSS  就是用的这个方法了。
      /// <summary>
        /// Read rss
        /// </summary>
        /// <returns></returns>
        public ArrayList Read(bool isFirst)
        {
            int i = 0;
            StringBuilder sb = new StringBuilder();
            bool readData = false;
            if (reader != null)
            {
                do
                {
                    pushElement = true;
                    readData = reader.Read();
                    string readerName = reader.Name.ToLower();
                    switch (reader.NodeType)
                    {
                  
                        case XmlNodeType.Element:
                            {
                                elementText = new StringBuilder();
                                if (reader.IsEmptyElement)
                                    break;
                                if (pushElement)
                                    xmlNodeStack.Push(readerName);
                                break;

                            }
                        case XmlNodeType.EndElement:
                            {
                                if (xmlNodeStack.Count == 1)
                                    break;
                                string childElementName = (string)xmlNodeStack.Pop();
                                string parentElementName = (string)xmlNodeStack.Peek();

                                switch (childElementName)
                                {
                                    item classes
                                }
                                switch (parentElementName)
                                {
                                       
                                    case "sns:a":
                                        switch (childElementName)
                                        {
                                            case "sns:href":
                                                if (isFirst)
                                                {
                                                   
                                                    if (!pageList.Contains(elementText.ToString()) && elementText.ToString().Length != 0)
                                                    {
                                                        
                                                        pageList.Add(elementText.ToString());
                                                    }
                                                   
                                                }
                                                break;
                                        }
                                        break;
                                        

                                    case "item":
                                        switch (childElementName)
                                        {
                                            case "title":
                                               // listTitle.Add(elementText.ToString());
                                                break;
                                            case "link":
                                               linkList.Add(elementText.ToString());
                                                break;
                                            case "description":

                                                break;
                                            case "sns:pubDate":
                                                break;

                                        }
                                        break;
                                }

                                break;

                            }
                            case XmlNodeType.Text:
                            {
                                elementText.Append(reader.Value);
                                break;
                            }
                            case XmlNodeType.CDATA:
                            {
                                elementText.Append(reader.Value);
                                i++;
                                break;
                            }
                    }
                }
                while (readData);
                
            }
            listCont.Add(linkList);
            if(pageList.Count!=0)
                listCont.Add(pageList);
            return listCont;
        }

详细 请下载源代码研究。。
地址
http://www.blogjava.net/Files/wujun/WjSinaArticlesDemo.rar

点击这里直接下载