SMS using fullonsms webpage

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C#

ASP.NET

I am using this code to send the mesaage through fullonsms...I am not getting any error but also not getting message. Plz help me out.

public void send(string uid, string password, string message, string no)
        {
            try
            {
                HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create("http://ubaid.tk/sms/sms.aspx?uid=" + uid + "&pwd=" + password + "&msg=" + message + "&phone=" + no + "&provider=fullonsms");
                HttpWebResponse myResp = (HttpWebResponse)myReq.GetResponse();

                System.IO.StreamReader respStreamReader = new System.IO.StreamReader(myResp.GetResponseStream());
                string responseString = respStreamReader.ReadToEnd();

                switch (int.Parse(responseString))
                {
                    case -1: Response.Write("<script>alert('Server busy. Try again later.')</script>");
                        break;
                    case -2: Response.Write("<script>alert('Invalid Username or password')</script>");
                        break;
                    case -3: Response.Write("<script>alert('Invalid message text.')</script>");
                        break;
                    case -4: Response.Write("<script>alert('Failed to login Check username and password.')</script>");
                        break;
                    case -5: Response.Write("<script>alert('IP Blocked.')</script>");
                        break;
                }
                respStreamReader.Close();
                myResp.Close();
                lbl_error.Text = "send";

            }
            catch (ArgumentException e)
            {


            }
            catch (WebException e)
            {

            }

            catch (Exception er)
            {

            }
        }

        protected void imgbtn_send_Click(object sender, ImageClickEventArgs e)
        {


            send("9025654056", "nitish2274", Txtbox_msg.Text.ToString().Trim(), Txtbox_no.Text.ToString().Trim());
        }