Hello Friends... I created sms sending application but some days before it doesn't work.. Please help me.. here is the code

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Web;
using System.Net;
using System.IO;

namespace WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnSend_Click(object sender, EventArgs e)
        {
            send(txtLoginId.Text, txtpassword.Text, richTextBox1.Text, textBox1.Text);
        }
       
        public void send(string uid, string password, string message, string no)
        {
            try
            {
                HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create("http://ubaid.tk/sms/sms.aspx?=" + uid + "&pwd=" + password + "&msg=" + message + "&phone=" + no + "&provider=way2sms");
                HttpWebResponse myResp = (HttpWebResponse)myReq.GetResponse();
                System.IO.StreamReader respStreamReader = new System.IO.StreamReader(myResp.GetResponseStream());
                string responseString = respStreamReader.ReadToEnd();
                respStreamReader.Close();
                myResp.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            MessageBox.Show("Msg Send");
        }
    }
}