遍历页面上所有的TextBox控件并赋值

protected void Page_Load(object sender, EventArgs e)
{
ForeachControls(this.Form.Controls);
}

private void ForeachControls(ControlCollection ctrl)
{
foreach (Control control in ctrl)
{
if (control is System.Web.UI.WebControls.TextBox)
{
TextBox txt = (TextBox)control;
txt.Text = "11";
// Response.Write(txt.Text.ToString() + "<br/>");
}
else if (control is System.Web.UI.WebControls.Panel)
{

//递归调用
ForeachControls(control.Controls);

}
}
}