清空页面所有值的---简单解决方案

public void Clear(System.Web.UI.Control topctrl) 
        { 
            foreach (System.Web.UI.Control ctrl in topctrl.Controls) 
            { 
                if (ctrl.GetType().Name== "TextBox") 
                    if (ctrl.ID != "tbEditShijian") 
                        ((TextBox)ctrl).Text = "";//清空TextBox 
                    else
                        ((TextBox)ctrl).Text = DateTime.Now.ToString("HH:mm:ss"); 
                else if (ctrl.GetType().Name == "CheckBoxList")//清空CheckBoxList 
                { 
                    CheckBoxList cbl = ctrl as CheckBoxList; 
                    for (int i = 0; i < cbl.Items.Count; i++) 
                    { 
                        cbl.Items[i].Selected = false; 
                    } 
                } 
        else if(...............)  
　　　　　　　　　　........ 
                if (ctrl.HasControls()) 
                    Clear(ctrl); 
            }  
        }