怎么遍历读出页面所有控件类型

Question

 foreach (Control col in this.Page.Controls[0].Controls)
        {
           Response.Write(col.GetType().Name);
        }
这个怎么无法读出控件类型？
0改为1也不行。

Answer 1

foreach (Control i in Page.Controls)
        {
            Response.Write(i.ToString());
        }

Answer 2

foreach   (Control   col   in   this.Page.Controls)
                {
                      Response.Write(col.GetType().Name);
                } 

Answer 3

foreach       (Control       col       in       this.Page.Controls) 
                                { 
                                            Response.Write(col.GetType().Name); 
                                }   
-------------------------
这个结果是：
LiteralControlHtmlHeadLiteralControlHtmlFormLiteralControl 

Answer 4

如果有控件嵌套需递归protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                ArrayList ctls = new ArrayList();                GetControls(this.Page, ref ctls);                for (int i = 0; i < ctls.Count; i++)
                {
                    Response.Write(ctls[i].ToString() + "<br>");
                }
            }
        }        private void GetControls(Control pctl, ref ArrayList ctls)
        {
            foreach (Control ctl in pctl.Controls)
            {
                ctls.Add(ctl.GetType().Name);
                if (ctl.HasControls())
                {
                    GetControls(ctl,ref ctls);
                }
            }
        }