using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace _7th_Program_ListboxAddRemove
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Add_Button(object sender, EventArgs e)
        {  
            
            listBox1.Items.Add(textBox1.Text);
            
        }

        private void Remove_Button(object sender, EventArgs e)
        {  
            
            listBox1.Items.Remove(textBox1.Text);
            
        }

        private void Add_Button(object sender, EventArgs e)
        {  
            
            listBox2.Items.Add(textBox2.Text);
            
        }

        private void Remove_Button(object sender, EventArgs e)
        {  
            
            listBox2.Items.Remove(textBox2.Text);
            
        }

        private void  > _Button(object sender, EventArgs e)
        {  
            
            listBox2.Items.Add(listBox1.Text);
            listBox1.Items.Remove(listBox1.Text);
            
        }

        private void  < _Button(object sender, EventArgs e)
        {  
            
            listBox1.Items.Add(listBox2.Text);
            listBox2.Items.Remove(listBox2.Text);
            
        }

        private void >> _Button(object sender, EventArgs e)
        {  
            
            for (int k = 0 ; k < listBox1.Items.Count ; k++) 
            {
                listBox2.Items.Add(listBox1.Items[k]);
            }
            listBox1.Items.Clear();
            
        }

        private void  << _Button(object sender, EventArgs e)
        {  
            
            for (int k = 0 ; k < listBox2.Items.Count ; k++) 
            {
                listBox1.Items.Add(listBox2.Items[k]);
            }
            listBox2.Items.Clear();
            
        }
    }
}