C# .net Code( How to send sms from his window project when i am connected via internet)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net.Mail;


namespace WindowsApplication1
{
    public partial class Form1 : Form
{

public Form1()
{
    InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
try
{
    MailMessage mail = new MailMessage();
    SmtpClient SmtpServer = new SmtpClient(
    "smtp.gmail.com");
    mail.From = new MailAddress("kamacac87@gmail.com");
    mail.To.Add("cac.kamaraju@gmail.com");
    mail.Subject = "Test Mail";
    mail.IsBodyHtml = true;
    string htmlBody;
    htmlBody = "Hello P.Kamaraju<br>      Write some HTML code here";
    mail.Body = htmlBody;
    SmtpServer.Port = 587;
    SmtpServer.Credentials = new
    System.Net.NetworkCredential("kamacac87", "yakubhai");
    SmtpServer.EnableSsl = true;
    SmtpServer.Send(mail);
    MessageBox.Show("Mail has been sent Successfully.");
}
catch (Exception ex)
{
    MessageBox.Show(ex.ToString());
}
}
}
}