WPF的Prism框架的使用

安装Prism.DryIoc库：

Prism的区域和模块化：

一个区域可以显示一个用户控件

一个模块就是一个项目，也就是一个类库

动态切换用户控件的案例：

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="auto"/>
        <RowDefinition/>
    </Grid.RowDefinitions>
    <StackPanel Orientation="Horizontal">
        <Button Margin="5" Content="打开模块A" Command="{Binding OpenCommand}" CommandParameter="ViewA"/>
        <Button Margin="5" Content="打开模块B" Command="{Binding OpenCommand}" CommandParameter="ViewB"/>
        <Button Margin="5" Content="打开模块C" Command="{Binding OpenCommand}" CommandParameter="ViewC"/>
    </StackPanel>
    <ContentControl prism:RegionManager.RegionName="ContentRegion" Grid.Row="1"/>
</Grid>

public partial class App
{
    protected override Window CreateShell()
    {
        return Container.Resolve<MainView>();
    }

    protected override void RegisterTypes(IContainerRegistry containerRegistry)
    {
        // 依赖注入
        containerRegistry.RegisterForNavigation<ViewA>();
        containerRegistry.RegisterForNavigation<ViewB>();
        containerRegistry.RegisterForNavigation<ViewC>();
    }
}

internal class MainViewModel : BindableBase
{
    private readonly IRegionManager regionManager;
    public DelegateCommand<string> OpenCommand { get; private set; }
    public MainViewModel(IRegionManager regionManager)
    {
        OpenCommand = new DelegateCommand<string>(Open);
        this.regionManager = regionManager;
    }

    private void Open(string obj)
    {
        regionManager.Regions["ContentRegion"].RequestNavigate(obj);
    }
}

多模块的情况下动态切换一个区域的用户控件：

大部分的代码是和上面一样的

模块A中的ModuleAProfile文件：

namespace ModuleA
{
    public class ModuleAProfile : IModule
    {
        public void OnInitialized(IContainerProvider containerProvider)
        {
        }

        public void RegisterTypes(IContainerRegistry containerRegistry)
        {
            // 依赖注入
            containerRegistry.RegisterForNavigation<ViewA>();
        }
    }
}

主项目中的App.xaml：

public partial class App
{
    protected override Window CreateShell()
    {
        return Container.Resolve<MainView>();
    }

    protected override void RegisterTypes(IContainerRegistry containerRegistry)
    {
    }

    protected override void ConfigureModuleCatalog(IModuleCatalog moduleCatalog)
    {
        moduleCatalog.AddModule<ModuleAProfile>();
        moduleCatalog.AddModule<ModuleBProfile>();
        base.ConfigureModuleCatalog(moduleCatalog);
    }
}