webRequest

                    Uri myUri =new Uri(@sURL);
        
            WebRequest wrq = WebRequest.Create(myUri);
            WebResponse wrs = wrq.GetResponse();   //引发WebException
            Stream strm = wrs.GetResponseStream();
            StreamReader sr = new StreamReader(strm, System.Text.Encoding.GetEncoding( "gb2312" ));      
            
            //读取网页
             sHTML = sr.ReadToEnd();