递归遍历子控件

 我们在ASP.NET编程中, 经常需要遍历一个Web控件的子控件 ，找到所需的控件并获取控件中相应的值

private void Button1_Click(object sender, System.EventArgs e)
        {
            FindSelecedControl(GlobalCategoryPanel);
        }
        private void FindSelecedControl(Control control)//递归函数
        {
            if(control is RadioButtonList)
            {
                RadioButtonList rbl=(RadioButtonList)control;
                al.Add(int.Parse(rbl.SelectedValue));
            }
            else
            {
                for(int i=0;i<control.Controls.Count;i++)
                {
                    FindSelecedControl(control.Controls[i]);
                }
            }
        }