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");            }        }    }}

　　在多个checkBox中进行切换代码。