How to send a message to a mobile using asp.net?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Mail;
using System.Web.Services.Protocols;
using System.Web.Services;
public partial class _Default : System.Web.UI.Page 
{
	protected void Page_Load(object sender, EventArgs e)
	{
	}
	protected void Button1_Click(object sender, EventArgs e)
	{
		try
	{
		 
		SmsTest.net.webservicex.www.SendSMS smsIndia= 
			  new SmsTest.net.webservicex.www.SendSMS();
		SmsTest.com.webservicex.www.SendSMSWorld smsWorld =  
		 new SmsTest.com.webservicex.www.SendSMSWorld();
		if(rdoType.SelectedValue == "1")
			smsIndia.SendSMSToIndia(TextBox3.Text.Trim(), 
					TextBox1.Text.Trim(), TextBox4.Text);
		else 
			smsWorld.sendSMS(TextBox1.Text.Trim(), 
					TextBox2.Text.Trim(), 
					TextBox3.Text.Trim(), TextBox4.Text);
		lblMessage.Visible = true;
		lblMessage.Text = "Message Send Succesfully";
	}
		catch (Exception ex)
		{
			lblMessage.Visible = true;
			lblMessage.Text = "Error in Sending message" + ex.ToString();
	}
	}

private void rdoType_SelectedIndexChanged(object sender, System.EventArgs e)
{
	if(rdoType.SelectedValue =="1")
		 TextBox2.Enabled = false;
	else
		 TextBox2.Enabled = false;
}
}