C#获取页面的HTML源码

//获取HTML源码
        public string GetHttpData(string Url)
        ...{
            string sException = null;
            string sRslt = null;
            WebResponse oWebRps = null;
            WebRequest oWebRqst = WebRequest.Create(Url);
            oWebRqst.Timeout = 50000;
            try
            ...{
                oWebRps = oWebRqst.GetResponse();
            }
            catch (WebException e)
            ...{
                sException = e.Message.ToString();
                MessageBox.Show(sException);
            }
            catch (Exception e)
            ...{
                sException = e.ToString();
                MessageBox.Show(sException);
            }
            finally
            ...{
                if (oWebRps != null)
                ...{
                    StreamReader oStreamRd = new StreamReader(oWebRps.GetResponseStream(), Encoding.GetEncoding("GB2312"));
                    sRslt = oStreamRd.ReadToEnd();
                    oStreamRd.Close();
                    oWebRps.Close();
                }
            }
            return sRslt;
        }