递归输出ASP.NET页面所有控件的类型和ID的代码

private void DisplayAllControl(Control control, int step)
{
foreach (Control ctl in control.Controls)
{
string s = new string('-', step 4) + ctl.GetType().Name + "〈" + ctl.ID + "〉";
Response.Write(s + "<br/>");
if (ctl.HasControls())
DisplayAllControl(ctl, step + 1);
}
}