public override void OnEnter()
        {
            if (ViewBag?.Inspection == null)
            {
                MessageBox.Show("Er is geen inspectie geselecteerd!");
                _router.GoBack();
                return;
            }

            _inspection = ViewBag.Inspection;

            var employees = _inspection.InspectionInspectors?.Select(x => x.Employee).ToList() ?? new List <Employee>();


            SelectedInspectors.Clear();
            UnSelectedInspectors.Clear();

            _userRepository.All().ForEach(UnSelectedInspectors.Add);

            UnSelectedInspectors
            .Where(x => employees.Contains(x)).ToList()
            .ForEach(x =>
            {
                SelectedInspectors.Add(x);
                UnSelectedInspectors.Remove(x);
            });
        }
        private void Add()
        {
            if (SelectedEmployee == null)
            {
                return;
            }

            SelectedInspectors.Add(SelectedEmployee);
            Inspectors.Remove(SelectedEmployee);
            SelectedEmployee = null;
        }
 private void Add()
 {
     SelectedInspectors.Add(UnSelectedInspector);
     UnSelectedInspectors.Remove(UnSelectedInspector);
     UnSelectedInspector = null;
 }