checkBox1_CheckedChanged(object sender, EventArgs e)和checkBox1_CheckStateChanged(object sender, EventArgs e)不同

 1 using System;
 2 using System.Data;
 3 using System.Drawing;
 4 using System.Text;
 5 using System.Windows.Forms;
 6 namespace Test18
 7 {
 8     public partial class Form1 : Form
 9     {
10         public Form1()
11         {
12             InitializeComponent();
13         }
14         private void checkBox1_CheckStateChanged(object sender, EventArgs e)
15         {
16             MessageBox.Show("控件的选择状态发生改变");
17         }
18 
19         private void Form1_Load(object sender, EventArgs e)
20         {
21 
22         }
23 
24         private void checkBox1_CheckedChanged(object sender, EventArgs e)
25         {
26 
27         }
28     }
29 }