Clear all text boxes by one click in same field..

• This program for the child webpage of the masterpage..
• It is the masterpage concept
  
  ContentPlaceHolder content1 = (ContentPlaceHolder)Master.FindControl("ContentPlaceHolder1");
  foreach(Control ctrl in content1.Controls)
  {
  
  if (ctrl.GetType().ToString() == "System.Web.UI.WebControls.Panel")
  {
  foreach (Control ctr in Panel1.Controls)
  {
  if (ctr.GetType().ToString() =="System.Web.UI.WebControls.TextBox")
  ((TextBox)ctr).Text = string.Empty;
  }
  }
  }