Hide menus in master page using asp.net

if (Request.QueryString["hid"] != null)
{
if (Request.QueryString["hid"] == "hidelink")
{
_master.ShowHideLinks("hidelinkedarea");
}
}

send this QueryString whenever you need to hide
sample : Response.Redirect("SearchDetails.aspx?cid=" + compid + "&hid=hidelink");