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

        private void radioButton2_Click(object sender, EventArgs e)
        {
            if(radioButton2.Checked == true)
            {
                MessageBox.Show("RadioButton2控件被选中");
            }
        }

        private void radioButton1_Click(object sender, EventArgs e)
        {
            if (radioButton1.Checked == true)
            {
                MessageBox.Show("RadioButton1控件被选中");
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            radioButton1.Checked = false; 
            radioButton2.Checked = false;
        }
    }
}