CheckStateChanged（复选框选中状态更改事件）和 CheckedChanged(单选按钮选中状态更改事件)二者区别？

CheckStateChanged（复选框选中状态更改事件）和 CheckedChanged(单选按钮选中状态更改事件)二者区别:

复选框控件(CheckBox)提供了CheckedChanged控件的选择状态发生改变；双击即可进入CheckedChanged编辑界面，此按钮未提供CheckStateChanged事件。

单选按钮控件（RadioButton）提供了CheckStateChanged选中状态被更改，双击单选按钮，可进入CheckedChanged编辑界面。

 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("控件的选择状态发生改变");
         }

         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控件的选中状态被更改");
         }
         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;
         }
     }
 }