如何注册导航视图 [英] How to register Views for Navigation

问题描述

我的项目结构如下:

Modules
   --- ModuleA
         ---ViewA
         ---ViewModelA
         ---Module
   --- ModuleB
         ---ViewB
         ---ViewModelB
         ---Module
MyApplication
   ---Shell.xaml
   ---Bootstrapper
MyApplication.Infrastructure
   ---
   ---

现在，在ModuleA.Module中:

Now, In ModuleA.Module:

[ModuleExport(typeof(Module), InitializationMode = InitializationMode.WhenAvailable)]
[PartCreationPolicy(CreationPolicy.NonShared)]
public class Module : IModule
{
    IRegionManager _regionManager;

    [ImportingConstructor]
    public Module(IRegionManager regionManager)
    {
        _regionManager = regionManager;
    }

    public void Initialize()
    {
        _regionManager.RegisterViewWithRegion(RegionNames.ContentRegion, typeof(ViewA));
    }
}

现在，在ModuleB.Module中:

Now, In ModuleB.Module:

[ModuleExport(typeof(Module), InitializationMode = InitializationMode.WhenAvailable)]
[PartCreationPolicy(CreationPolicy.NonShared)]
public class Module : IModule
{
    IRegionManager _regionManager;

    [ImportingConstructor]
    public Module(IRegionManager regionManager)
    {
        _regionManager = regionManager;
    }

    public void Initialize()
    {
        _regionManager.RegisterViewWithRegion(RegionNames.ContentRegion, typeof(ViewB));
    }
}

在Shell.xaml中:

In Shell.xaml:

<DockPanel LastChildFill="True">

    <Menu DockPanel.Dock="Top">
        <MenuItem Header="Show View A" />
        <MenuItem Header="Show View B" />
    </Menu>
    <ContentControl prism:RegionManager.RegionName="{x:Static inf:RegionNames.ContentRegion}"/>

</DockPanel>

在Bootstrapper.cs中

In Bootstrapper.cs

protected override void ConfigureAggregateCatalog()
{
    base.ConfigureAggregateCatalog();
    AggregateCatalog.Catalogs.Add(new AssemblyCatalog(typeof(BootStrapper).Assembly));
    AggregateCatalog.Catalogs.Add(new AssemblyCatalog(typeof(RegionNames).Assembly));
    AggregateCatalog.Catalogs.Add(new AssemblyCatalog(typeof(ModuleA.Module).Assembly));
    AggregateCatalog.Catalogs.Add(new AssemblyCatalog(typeof(ModuleB.Module).Assembly));
}

运行应用程序时，出现错误，指出未为ContentRegion找到导出或多个导出.我可以理解，我正在同一地区注册两个视图，所以会收到该错误.

When I run the application, I get an error specifying that No Exports or Multiple Exports were found for ContentRegion. I can understand that I am registering both of my views in the same region, so I get that error.

但是我不知道如何出于导航目的注册视图，因此，当我单击MenuItem Show View A时，ViewA应该出现在内容区域中.对于ViewB也是如此.

But I don't know how to register my views for navigation purpose, so that when I click on MenuItem Show View A, ViewA should appear in Content Region. Similarly for ViewB.

推荐答案

您是否尝试过阅读文档?

Have you tried reading the docs?

https://github.com/PrismLibrary/Prism/blob/master/Documentation/WPF/60-Navigation.md#prism-region-overview

使用MEF，您可以简单地导出具有指定名称的视图类型.

Using MEF, you can simply export the view type with the specified name.

[Export("InboxView")]
public partial class InboxView : UserControl

这篇关于如何注册导航视图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！