透过设置窗体的AcceptButton属性，可以设置窗体的“接受”按钮，若此设计，则用户每次按下Enter键都相当于单击该按钮

 1 using System; 2 using System.Collections.Generic; 3 using System.ComponentModel; 4 using System.Data; 5 using System.Drawing; 6 using System.Text; 7 using System.Windows.Forms; 8  9 namespace Test0210 {11     public partial class Form1 : Form12     {13         public Form1()14         {15             InitializeComponent();16         }17 18         private void Form1_Load(object sender, EventArgs e)19         {20             this.AcceptButton = button1;21         }22 23         private void button1_Click(object sender, EventArgs e)24         {25             MessageBox.Show("引发了接受按钮");26         }27     }28 }