asp.net下遍历页面中所有的指定控件的代码


            1.遍历页面中所有的TextBox,并将值设置成String.Empty 复制代码 代码如下: for (int j = 0; j < this.Controls.Count; j++) { foreach (object o in Page.Controls[j].Controls) { if (o is TextBox) { TextBox txt = (System.Web.UI.WebControls.TextBox)o; txt.Text = String.Empty; } } }  2.递归遍历 复制代码 代码如下: private void FindAllTextBoxByPageControl(ControlCollection controlCollection) { for (int i = 0; i < controlCollection.Count; i++) { if (controlCollection[i].GetType() == typeof(TextBox)) //System.Web.UI.WebControls.TextBox { (controlCollection[i] as TextBox).Text = String.Empty; } if (controlCollection[i].HasControls()) { //递归 (重要) 否则将退出程序 FindAllTextBoxByPageControl(controlCollection[i].Controls); } } }  调用方法 复制代码 代码如下: FindAllTextBoxByPageControl(Page.Controls);