Prism Sample 6 Activation Deactivation

例5中刚说到视图精确控制，这次说明这样的灵活控制是怎样做的，显示或不显示，或切换视图。

主页上显示了主按钮和一个ContentControl

<DockPanel LastChildFill="True">
        <StackPanel>
            <Button Content="Activate ViewA" Click="Button_Click"/>
            <Button Content="Deactivate ViewA" Click="Button_Click_1"/>
            <Button Content="Activate ViewB" Click="Button_Click_2"/>
            <Button Content="Deactivate ViewB" Click="Button_Click_3"/>
        </StackPanel>
        <ContentControl prism:RegionManager.RegionName="ContentRegion" HorizontalAlignment="Center" VerticalAlignment="Center" />
    </DockPanel>

然后在后台代码中，对显示内容进行了精确控制

   public partial class MainWindow : Window
    {
        IContainerExtension _container;
        IRegionManager _regionManager;
        IRegion _region;

        ViewA _viewA;
        ViewB _viewB;

        public MainWindow(IContainerExtension container, IRegionManager regionManager)
        {
            InitializeComponent();
            _container = container;
            _regionManager = regionManager;

            this.Loaded += MainWindow_Loaded;
        }

        private void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            _viewA = _container.Resolve<ViewA>();
            _viewB = _container.Resolve<ViewB>();

            _region = _regionManager.Regions["ContentRegion"];

            _region.Add(_viewA);
            _region.Add(_viewB);
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            //activate view a
            _region.Activate(_viewA);
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            //deactivate view a
            _region.Deactivate(_viewA);
        }

        private void Button_Click_2(object sender, RoutedEventArgs e)
        {
            //activate view b
            _region.Activate(_viewB);
        }

        private void Button_Click_3(object sender, RoutedEventArgs e)
        {
            //deactivate view b
            _region.Deactivate(_viewB);
        }
    }

这里出现的新概念就是Activate 和DeActivate。控制显示和不显示。