Programalama > C#

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 test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        
        private void Form1_Load(object sender, EventArgs e)
        {
            listBox1.Items.Add("izmir");
            listBox1.Items.Add("istanbul");
            listBox1.Items.Add("aydın");
            listBox1.Items.Add("manisa");
            listBox2.Items.Add("ankara");
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (listBox1.SelectedItem == null)
                MessageBox.Show("Please select an item from listBox1.");
            else
            {
                listBox2.Items.Add(listBox1.SelectedItem.ToString());
                listBox1.Items.Remove(listBox1.SelectedItem);
            }
        }
        private void button2_Click(object sender, EventArgs e)
        {
            if (listBox2.SelectedItem == null)
                MessageBox.Show("Please select an item from listBox2.");
            else
            {
                listBox1.Items.Add(listBox2.SelectedItem.ToString());
                listBox2.Items.Remove(listBox2.SelectedItem);
            }
        }

    }
}

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