CheckStateChanged（復選框選中狀態更改事件）和 CheckedChanged(單選按鈕選中狀態更改事件)二者區別？

CheckStateChanged（復選框選中狀態更改事件）和 CheckedChanged(單選按鈕選中狀態更改事件)二者區別:

復選框控件(CheckBox)提供了CheckedChanged控件的選擇狀態發生改變；雙擊即可進入CheckedChanged編輯界面，此按鈕未提供CheckStateChanged事件。

單選按鈕控件（RadioButton）提供了CheckStateChanged選中狀態被更改，雙擊單選按鈕，可進入CheckedChanged編輯界面。

using System;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace Test18
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void checkBox1_CheckStateChanged(object sender, EventArgs e)
        {
            MessageBox.Show("控件的選擇狀態發生改變");
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {

        }
    }
}

using System;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace Test20
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            MessageBox.Show("RadioButton1控件的選中狀態被更改");
        }
        private void button1_Click(object sender, EventArgs e)
        {
            radioButton1.Checked = true;
        }
        private void button2_Click(object sender, EventArgs e)
        {
            radioButton1.Checked = false;
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            radioButton1.Checked = true;
        }
    }
}