HttpWebRequest Post方式传值

HttpWebRequest   Post方式传值

{

 // string param = "UID=" + strUid + "&FunctionName=Survey";

            //string param = "UID=2fba7bf3-64fc-478b-8e71-178af0dcc548&FunctionName=Survey";           

            byte[] bs = Encoding.ASCII.GetBytes(param);

            //string strUrl =  @"http://202.142.26.39/GetFunctionList.aspx";

            HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(strUrl);

            req.Method = "POST";

            //req.Timeout = 10;

            req.ContentType = "application/x-www-form-urlencoded";

            req.ContentLength = bs.Length;

            using (Stream reqStream = req.GetRequestStream())

            {

                reqStream.Write(bs, 0, bs.Length);

            }

            HttpWebResponse rep = (HttpWebResponse)req.GetResponse();

            Stream receiveStream = rep.GetResponseStream();

            Encoding encode = System.Text.Encoding.GetEncoding("UTF-8");

            StreamReader readStream = new StreamReader(receiveStream, encode);

            Char[] read = new Char[256];

            int count = readStream.Read(read, 0, 256);

            StringBuilder sb = new StringBuilder("");

            while (count > 0)

            {

                String readstr = new String(read, 0, count);

                sb.Append(readstr);

                count = readStream.Read(read, 0, 256);

            }

            rep.Close();

            readStream.Close();

            return sb.ToString();

            //    XmlDocument doc = new XmlDocument();

            //    string xml = sb.ToString();

            //  doc.LoadXml(xml);