public SubCategoryViewModel(IRegionManager regionManager)
        {            
            _subCategoryBl = new SubCategoryBL();            
            _subCategories = new ObservableCollection<SubCategoryVO>(_subCategoryBl.FindAll());

            _categoryBl = new CategoryBL();
            _categories = new ObservableCollection<CategoryVO>(_categoryBl.FindAll());
        }
        //Standard registration
        //public SubCategoryViewModel(ISubCategoryView view, IRegionManager regionManager)
        //    : base(view)
        //Navigation registration
        public SubCategoryViewModel(IRegionManager regionManager)
        {
            _regionManager = regionManager;

            _subCategoryBl = new SubCategoryBL();            
            _subCategories = new ObservableCollection<SubCategoryVO>(_subCategoryBl.FindAll());

            _categoryBl = new CategoryBL();
            _categories = new ObservableCollection<CategoryVO>(_categoryBl.FindAll());

            NotificationRequest = new InteractionRequest<INotification>();
            NotificationCommand = new DelegateCommand(RaiseNotification);

            ConfirmationRequest = new InteractionRequest<IConfirmation>();
            ConfirmationCommand = new DelegateCommand(RaiseConfirmation);

            CustomPopupRequest = new InteractionRequest<INotification>();
            CustomPopupCommand = new DelegateCommand(RaiseCustomPopup);

            SelectItemCommand = new DelegateCommand<object[]>(SelectItem);

            CategoryInfoCommand = new DelegateCommand<SubCategoryVO>(CategoryInfo);
        }
        public WizardViewModel(IRegionManager regionManager)
        {
            Wizard = new WizardVO();            

            _categoryBL = new CategoryBL();
            _categories = new ObservableCollection<CategoryVO>(_categoryBL.FindAll());

            _subCategoryBL = new SubCategoryBL();     
            _wizardBL = new WizardBL();     
            
            Problem = new ProblemVO();            
        }