Prism Sample 17-BasicRegionNavigation

Posted 2021-06-16 cbaa

本例是基础的导航应用

在窗口中布局了2个按钮，一个区域

 <DockPanel LastChildFill="True">
        <StackPanel Orientation="Horizontal" DockPanel.Dock="Top" Margin="5" >
            <Button Command="{Binding NavigateCommand}" CommandParameter="ViewA" Margin="5">Navigate to View A</Button>
            <Button Command="{Binding NavigateCommand}" CommandParameter="ViewB" Margin="5">Navigate to View B</Button>
        </StackPanel>
        <ContentControl prism:RegionManager.RegionName="ContentRegion" Margin="5"  />
    </DockPanel>

其中2个按钮绑定了同一个命令，只是参数不同，即命令是导航，目标不同。

public DelegateCommand<string> NavigateCommand { get; private set; }

        public MainWindowViewModel(IRegionManager regionManager)
        {
            _regionManager = regionManager;

            NavigateCommand = new DelegateCommand<string>(Navigate);
        }

        private void Navigate(string navigatePath)
        {
            if (navigatePath != null)
                _regionManager.RequestNavigate("ContentRegion", navigatePath);
        }

扩展模块定义了2个视图，用作导航的视图。要点是在模块中注册为导航视图。

 public class ModuleAModule : IModule
    {
        public void OnInitialized(IContainerProvider containerProvider)
        {
            
        }

        public void RegisterTypes(IContainerRegistry containerRegistry)
        {
            containerRegistry.RegisterForNavigation<ViewA>();
            containerRegistry.RegisterForNavigation<ViewB>();
        }
    }