public void DeleteByID <T>(int ID)
        {
            switch (default(T))
            {
            case Klant Klant:
                _klantRepo.DeleteByID(ID);
                break;

            case Limousine Limousine:
                _limoRepo.DeleteByID(ID);
                break;

            case Locatie Locatie:
                _locaRepo.DeleteByID(ID);
                break;

            case Staffelkorting Staffelkorting:
                _staffelRepo.DeleteByID(ID);
                break;

            case Reservering Reservering:
                _reserRepo.DeleteByID(ID);
                break;

            default:
                break;
            }
            _klantRepo.SaveChanges();
        }