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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);}
}