how to get the parent page reference
<p>I have pages "first.aspx" and "second.aspx". Now  from first.aspx, using link button I'm doing " Response.Redirect()" to "Third.aspx" and simlarly from second.aspx also with link button I'm doing " Response.Redirect() to "Third.aspx". but I want to disable a button on "third.aspx" when I come from " first.aspx" only . how can i acheive this.</p>
