public async Task <IEnumerable <SeatDomainModel> > GetAllSeatsForProjection(Guid id) { var allSeatsForProjection = await _seatsRepository.GetAllOfSpecificProjection(id); var reservedSeatsForThisProjection = _ticketRepository.GetAllForSpecificProjection(id); if (allSeatsForProjection == null) { return(null); } List <SeatDomainModel> result = new List <SeatDomainModel>(); SeatDomainModel model; foreach (var seat in allSeatsForProjection) { model = new SeatDomainModel { AuditoriumId = seat.AuditoriumId, Id = seat.Id, Number = seat.Number, Row = seat.Row }; foreach (var reservedSeat in reservedSeatsForThisProjection) { if (seat.Id == reservedSeat.SeatId) { model.Reserved = true; } } result.Add(model); } return(result); }