byte[] postData = Encoding.ASCII.GetBytes(parameters);

            System.Net.HttpWebRequest request = System.Net.WebRequest.Create(url) as System.Net.HttpWebRequest;

            request.Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*";

            request.Headers.Add("Accept-Language", "zh-cn,en-us;q=0.5");

            request.Headers.Add("Accept-Encoding", "gzip, deflate");

            request.CookieContainer = cookieContainer;

            request.ContentLength = postData.Length;

            request.Method = "POST";

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

            request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)";



 System.IO.Stream outputStream = request.GetRequestStream();

            outputStream.Write(postData, 0, postData.Length);

            outputStream.Close();

            System.Net.HttpWebResponse response = request.GetResponse() as System.Net.HttpWebResponse;



 System.IO.Stream readStream = response.GetResponseStream();

            string responseText = "";

            try

            {

                if (response.ContentEncoding.ToLower().Contains("gzip"))

                    readStream = new GZipStream(readStream, CompressionMode.Decompress);

                else if (response.ContentEncoding.ToLower().Contains("deflate"))

                    readStream = new DeflateStream(readStream, CompressionMode.Decompress);



                System.IO.StreamReader reader = new System.IO.StreamReader(readStream, Encoding);

                responseText = reader.ReadToEnd();

            }

            finally

            {<