C# 模拟按下回车键自动登录

 private void Form1_Load(object sender, EventArgs e)
 {
     //this.Show();
     this.Activate();
     //this.Focus();
     SendKeys.Send("{ENTER}");
 }

 private void button1_Click(object sender, EventArgs e)
 {
     MessageBox.Show("自动点击生效了");
 }