.NetバックグラウンドPOST伝値

                       Redirect Get     ，    POST          ：
  
/// <summary>  
        ///   POST    
        /// </summary>  
        public void POST()
        {
            int a = 0, b = 0, c = 0;
            string postData = null;
            System.Net.HttpWebRequest request = default(System.Net.HttpWebRequest);
            System.IO.Stream requestStream = default(System.IO.Stream);
            byte[] postBytes = null;
            //      
            postData = "a=" + a + "&b=" + b + "&c=" + c;
            string url = "http://" + Request.Url.Authority + "/WebForm1.aspx";
            request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
            request.ContentType = "application/x-www-form-urlencoded";
            request.ContentLength = postData.Length;
            request.Timeout = 10000;
            request.Method = "POST";
            request.AllowAutoRedirect = false;

            requestStream = request.GetRequestStream();
            postBytes = System.Text.Encoding.ASCII.GetBytes(postData.ToString());

            requestStream.Write(postBytes, 0, postBytes.Length);
            requestStream.Close();
        }