public void SetAppointmentsReferralDeleted(Appointment appointment) { if (_referralService.GetAppointmentsReferral(appointment) != null) { Referral referal1 = ReferralAdapter.ReferralDtoToReferral(_referralService.GetAppointmentsReferral(appointment)); Referral referal2 = _dbContext.Referrals.SingleOrDefault(referral => referral.Id == referal1.Id); referal2.IsDeleted = true; _dbContext.SaveChanges(); } }