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);