Send SMS in Asp.net Code Via Using C# language

Question

Send SMS in Asp.net Code Via Using C# language

   protected void Btnsend_Click(object sender, EventArgs e)
        {
            send(txtUsername.Text, txtPassword.Text, txtMessage.Text, txtReceiverNo.Text);
        }

       public void send(string uid, string password, string message, string no)
        {
            HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create("http://ubaid.tk/sms/sms.aspx?uid=" + uid + "&pwd=" + password + "&msg=" + message + "&phone=" + no + "&provider=Ultoo");
            HttpWebResponse myResp = (HttpWebResponse)myReq.GetResponse();
            System.IO.StreamReader respStreamReader = new System.IO.StreamReader(myResp.GetResponseStream());
            string responseString = respStreamReader.ReadToEnd();
            if (responseString.Equals("1"))
            {
                Label1.Text = "Could not login check your username and password";
            }
            else
            {
                Label1.Text = "THE MESSAGE WAS SUCCESSFULLY POSTED";
            }
                 respStreamReader.Close();
                 myResp.Close();

        }

Not working this code in way2sms via...
pls help