asp中如何遍历服务器控件

我想在后台代码中遍历查看服务器控件的复选按钮那几个被选中怎么 弄

---

C# code:
List<CheckBox> list = new List<CheckBox>();
foreach (Object i in Page.Form.Controls)
{
CheckBox chb = i as CheckBox;
if (chb != null)
{
if (chb.Checked == true)
{
list.Add(chb);
}
}
}
Response.Write(list.Count);

---

使用jquery可以简单地实现

---

foreach(Control c in this.form1.Controls)
{
  if(c is CheckBox)
{
  //dosomethings
}
}

---

Page.FindControl()