Moving Items between Two List Boxes in windows C#

This Article is by Rajesh

Description:

In this article we will see a simple example to interchange the items between two list boxes.

The screenshot of the application is shown in the image below.

The C# code in the code behind file is like this

using System;

using System.Windows.Forms;

namespace ListBox

{

    public partial class From_listbox : Form

    {

        public From_listbox()

        {

            InitializeComponent();

        }    

        

        

        private void trsfr_B_Click(object sender, EventArgs e)

        {

            string value1=string.Empty;

          

            try

            {

                //copying selected value in List Box A

                value1 = listBoxA.SelectedItem.ToString();

                //Adding item to the List Box B

                listBoxB.Items.Add(value1);

                //Deleting the item in List Box A

                listBoxA.Items.Remove(listBoxA.SelectedItem);

            }

            catch

            {

                // showing error message if no item is selected in list Box

                MessageBox.Show("select Item from list"); 

            }                    

           

        }

        private void trnsfr_A_Click(object sender, EventArgs e)

        {

            string value2 = string.Empty;

            try

            {

                //copying selected value in List Box B

                value2 = listBoxB.SelectedItem.ToString();

                //Adding item to the List Box A

                listBoxA.Items.Add(value2);

                //Deleting the item in List Box B

                listBoxB.Items.Remove(listBoxB.SelectedItem);   

            }

            catch

            {

                //showing error message if no item is selected in list Box

                MessageBox.Show("select the item from list");

            }        

           

        }

      

    }

}

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