Call a URL and save the response C# ASP.NET

string url = "http://69.50.198.112/send.php?usr=24129&pwd=123456&ph=9030102460&text=fromApp";

               WebRequest request = HttpWebRequest.Create(url);

                WebResponse response = request.GetResponse();

                StreamReader reader = new StreamReader(response.GetResponseStream());

                string urlText = reader.ReadToEnd();