private string SiteLogin(string iURL, string iSendDataString)
        {
            byte[] iSendData = Encoding.UTF8.GetBytes(iSendDataString);
            HttpWebRequest wreq = (HttpWebRequest)WebRequest.Create(iURL);
            wreq.ContentType = "application/x-www-form-urlencoded";
            wreq.Method = "POST";
            wreq.ContentLength = iSendData.Length;
            Stream requestStream = wreq.GetRequestStream();
            requestStream.Write(iSendData, 0, iSendData.Length);
            requestStream.Close();

            HttpWebResponse wres = (HttpWebResponse)wreq.GetResponse();
            StreamReader responseStream = new StreamReader(wres.GetResponseStream(), Encoding.UTF8);
            string resultHTML = responseStream.ReadToEnd();
            return resultHTML;
        }

이런소스함수를잤는데요.. 왜 인증이안될까요.
자꾸 로그인이 안된상태의 HTML만 반환하네요...
URL이랑 form쿼리들 다넘겼는데요. 왜그럴까요...