winform事件获取用户控件的textbox值

Question

我的用户控件有个textbox，如何在winfrom窗体下获取UserControl1控件的textbox值？
UserControl1 empcontrol = new UserControl1();
groupBox1.Controls.Add(empcontrol);

Answer 1

Control[] controls = UserControl1.Controls.Find("textboxID",true);
if(controls.Length != 0){
   string text = controls[0].Text.Trim();
}

Answer 2

UserControl1 换成 empcontrol

Answer 3

<script language=javascript>
alert('good!');
</script>

Answer 4

<script language=javascript>
alert('good!');
</script>