获取url的字符串数据

  public string GetHttpData(string sUrl)
        {
            string sRslt = null;
            WebResponse oWebRps = null;
            WebRequest oWebRqst = WebRequest.Create(sUrl);
            oWebRqst.Timeout = 50000;
            try
            {
                oWebRps = oWebRqst.GetResponse();
            }          
        
            finally
            {
                if (oWebRps != null)
                {
                    StreamReader oStreamRd = new StreamReader(oWebRps.GetResponseStream(), System.Text.Encoding.GetEncoding("utf-8"));
                    sRslt = oStreamRd.ReadToEnd();
                    oStreamRd.Close();
                    oWebRps.Close();
                }
            }
            return sRslt;
        }