解决无法从传输连接中读取数据: 连接已关闭

            string outStr = "";
            string tmpStr = "";
            string PageUrl = "url";
            System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(PageUrl);
            request.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.1) Web-Sniffer/1.0.24";
            System.Net.WebResponse response = request.GetResponse();
            System.IO.Stream resStream = response.GetResponseStream();
            System.IO.StreamReader sr = new System.IO.StreamReader(resStream, System.Text.Encoding.UTF8);
            try
            {
                while ((tmpStr = sr.ReadLine()) != null)
                {
                    outStr += tmpStr;
                }
            }
            catch
            { }

            //Response.Write(outStr);
            
            resStream.Close();
            sr.Close();

            XmlTextReader reader = new XmlTextReader(new StringReader(outStr));
            reader.WhitespaceHandling = WhitespaceHandling.None;

            DataSet ds = new DataSet();
            ds.ReadXml(reader);
            reader.Close();

            GridView1.DataSource = ds.Tables[0];
            GridView1.DataBind();

            ds.Dispose();