how we can Move items from one listbox to another listbox in asp.net C# by using ajaxcontrol

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>





   


   

   

    
   
  
  
  
   
   

   

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            ListBox1.Items.Add("Raj");
            ListBox1.Items.Add("Ravi");
            ListBox1.Items.Add("Rahul");
            ListBox1.Items.Add("Raju");
            ListBox1.Items.Add("Rohit");
            ListBox1.Items.Add("Rajesh");
        }

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        ListBox1.Items.Add(ListBox2.SelectedItem.Text);
        int i = 0;
        i = ListBox2.SelectedIndex;
        ListBox2.Items.RemoveAt(i);

    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        ListBox2.Items.Add(ListBox1.SelectedItem.Text);
        int i = 0;
        i = ListBox1.SelectedIndex;
        ListBox1.Items.RemoveAt(i);

    }
    protected void Button3_Click(object sender, EventArgs e)
    {
        int j = 0;
        for (j = 0; j <= ListBox2.Items.Count - 1; j++)
        {
            ListBox1.Items.Add(ListBox2.Items[j]);
        }
        ListBox2.Items.Clear();

    }
    protected void Button4_Click(object sender, EventArgs e)
    {
        int j = 0;
        for (j = 0; j <= ListBox1.Items.Count - 1; j++)
        {
            ListBox2.Items.Add(ListBox1.Items[j]);
        }
        ListBox1.Items.Clear();

    }
}