public ActionResult BillScheduleUpdate(string id)
 {
     int sessionUserID = WebSecurity.GetUserId(User.Identity.Name);
     Bank bank = new Bank();
     if (id == null)
     {
         return View(bank.billUpdateGet(sessionUserID, null));
     }
     else
     {
         return View(bank.billUpdateGet(sessionUserID, id));
     }
 }