public string AddReservation(DateTime dateReservedFrom, DateTime dateReservedTo, string membershipId, int isbn)
{
ObjectResult <sp_reservation_save_Result>
result = entities.sp_reservation_save(dateReservedFrom, dateReservedTo, membershipId, isbn);
sp_reservation_save_Result messageResult = result.First();
return(messageResult.type + " " + messageResult.message);
}
