Не могу получить HTML код страницы

string email = "";
            string pass = "";
            string data = string.Format("log_email={0}&pass={1}", email, pass);          
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://cannonsatoshi.com/");
            byte[] ByteArr = Encoding.GetEncoding(1251).GetBytes(data);            
            request.Method = "POST";
            request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
            request.Headers.Add("Accept-Language", "ru-RU,ru;q=0.8,en-US;q=0.5,en;q=0.3");
            request.Headers.Add("Accept-Encoding", "gzip, deflate");           
            request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0";
            request.Host = "cannonsatoshi.com";          
            request.Referer = "https://cannonsatoshi.com/";
            request.ContentType = "application/x-www-form-urlencoded";
            request.CookieContainer = cookieCon;
            request.ContentLength = ByteArr.Length;            
            Stream sendStream = request.GetRequestStream();
            sendStream.Write(ByteArr, 0, ByteArr.Length);
            sendStream.Close();