public void Reset(  )
 {
     NewRO    = new RepairOrder();
     RONumber = 0;
     NewVehicleDataViewModel.Reset();
     NewRepairsViewModel.Reset();
 }
        public CreateRepairOrderViewModel(IWindowManager windowManager, IEventAggregator eventAggregator)
        {
            _windowManager   = windowManager;
            _eventAggregator = eventAggregator;
            _eventAggregator.Subscribe(this);

            NewRepairsViewModel     = new NewRepairsViewModel(windowManager, eventAggregator);
            NewVehicleDataViewModel = new NewVehicleDataViewModel(windowManager, eventAggregator);
            RND   = new Random();
            NewRO = new RepairOrder();

            ActivateItem(NewVehicleDataViewModel);
        }