遍历aspx页面中所有的指定控件


//1.遍历页面中所有的TextBox,并将值设置成String.Empty

  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

  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

  FindAllTextBoxByPageControl(Page.Controls);


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