c#

hi,

Are you using desktop or web base application development?

For desktop please refer

http://www.codeproject.com/Articles/24682/Moving-listbox-items

for web base
Jquery or Java script is best option to perform same

please refer
http://codes.codedigest.com/CodeDigest/134-Move-List-Items-Up-and-Down-Using-jQuery-in-ASP-Net-ListBox-control.aspx

hope this will help you.

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;

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

        private void Form1_Load(object sender, EventArgs e)
        {
            listBox1.Items.Add("Raj");
            listBox1.Items.Add("Ravi");
            listBox1.Items.Add("Rahul");
            listBox1.Items.Add("Raju");
            listBox1.Items.Add("Rohit");
            listBox1.Items.Add("Rajesh");
        }

        private void button1_Click(object sender, EventArgs e)
        {
         
            listBox2.Items.Add(listBox1.SelectedItem);
            int i = 0;
            i = listBox1.SelectedIndex;
            listBox1.Items.RemoveAt(i);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            listBox1.Items.Add(listBox2.SelectedItem);
            int i = 0;
            i = listBox2.SelectedIndex;
            listBox2.Items.RemoveAt(i);

        }

        private void button3_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();
        }

        private void button4_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();
        }
    }
}

http://onurag-dotnetfunda.blogspot.in/2012/04/list-box-in-window-form-using-c.html

Please check this and tell further if anything else is required.