public bool RemoveReservation(int orderId)
 {
     try
     {
         using (CarRentEntities db = new CarRentEntities())
         {
             orders_tbl res = db.orders_tbl.FirstOrDefault(r => r.OrderId == orderId);
             if (res != null && res.PickUpDate < (new DateTime().ToLocalTime()))
             {
                 db.orders_tbl.Remove(res);
                 db.SaveChanges();
                 return(true);
             }
             return(false);
         }
     }
     catch (Exception)
     {
         return(false);
     }
 }
 public bool EditReservation(Reservation changedRes)
 {
     try
     {
         using (CarRentEntities db = new CarRentEntities())
         {
             orders_tbl res = db.orders_tbl.FirstOrDefault(r => r.OrderId == changedRes.OrderId);
             if (res != null)
             {
                 changedRes.ReturnDate        = res.ReturnDate;
                 changedRes.ActuallReturnDate = res.ActuallReturnDate;
                 db.SaveChanges();
                 return(true);
             }
             return(false);
         }
     }
     catch (Exception)
     {
         return(false);
     }
 }