Send simple notification to Android

Send  simple notification to Android

  public string SendNotification(string DeviceToken, string message)

        {

            var value = message;

            WebRequest tRequest;

            tRequest = WebRequest.Create("https://android.googleapis.com/gcm/send");

            tRequest.Method = "post";

            tRequest.ContentType = " application/x-www-form-urlencoded;charset=UTF-8";

            tRequest.Headers.Add(string.Format("Authorization: key={0}", Common.GoogleAppID));

            tRequest.Headers.Add(string.Format("Sender: id={0}", Common.SENDER_ID));

            string postData = "collapse_key=score_update&time_to_live=108&delay_while_idle=0&data.message=" + value + "&data.time=" + System.DateTime.Now.ToString() + "&registration_id=" + DeviceToken + "";

            Console.WriteLine(postData);

            Byte[] byteArray = Encoding.UTF8.GetBytes(postData);

            tRequest.ContentLength = byteArray.Length;

            Stream dataStream = tRequest.GetRequestStream();

            dataStream.Write(byteArray, 0, byteArray.Length);

            dataStream.Close();

            WebResponse tResponse = tRequest.GetResponse();

            dataStream = tResponse.GetResponseStream();

            StreamReader tReader = new StreamReader(dataStream);

            String sResponseFromServer = tReader.ReadToEnd();

            tReader.Close();

            dataStream.Close();

            tResponse.Close();

            return sResponseFromServer;

        }

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