check box

 
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 checkbox
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            CheckState state = checkBox1.CheckState;
            switch (state)
            {
                case CheckState.Checked:
                case CheckState.Indeterminate:
                case CheckState.Unchecked:
                    {
                        MessageBox.Show(state.ToString());
                        break;
                    }
            }
            MessageBox.Show(checkBox1.Checked.ToString());
        }
 
      
    }
}