public async Task AnswerNotification(NotificationAnswerDTO notificationAnswerDto) { var notificationAnswer = new DAL.App.DTO.NotificationAnswer { Attending = notificationAnswerDto.Coming, Content = notificationAnswerDto.Content, NotificationId = Guid.Parse(notificationAnswerDto.NotificationId), }; await ServiceRepository.AddNewAnswer(notificationAnswer); await ServiceUnitOfWork.SaveChangesAsync(); var notification = await ServiceUnitOfWork.NotificationRepository.FirstOrDefaultAsync(Guid.Parse(notificationAnswerDto.NotificationId)); await ServiceUnitOfWork.NotificationRepository.UpdateNotification(notification); await ServiceUnitOfWork.SaveChangesAsync(); var userInTraining = await ServiceUnitOfWork.UsersInTrainingRepository.FindByAppUserIdAndTrainingId(Guid.Parse(notificationAnswerDto.AppUserId), Guid.Parse(notificationAnswerDto.TrainingId)); if (notificationAnswerDto.Coming) { userInTraining.AttendingTraining = true; ServiceUnitOfWork.UsersInTrainingRepository.UpdateUserInTraining(userInTraining); } await ServiceUnitOfWork.SaveChangesAsync(); }