checkBox控件的使用方法

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

        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox1.Checked)
            {
                checkBox2.Checked = false;
                checkBox3.Checked = false;
                MessageBox.Show("1OK");
            }
        }

        private void checkBox2_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox2.Checked)
            {
                checkBox1.Checked = false;
                checkBox3.Checked = false;
                MessageBox.Show("2OK");
            }
        }

        private void checkBox3_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox3.Checked)
            {
                checkBox1.Checked = false;
                checkBox2.Checked = false;
                MessageBox.Show("3OK");
            }
        }
    }
}