这个项目演示了如何在WPF中使用各种Prism功能的示例。如果您刚刚开始使用Prism，建议您从第一个示例开始，按顺序从列表中开始。每个示例都基于前一个示例的概念。
此项目平台框架：.NET Core 3.1
Prism版本：8.0.0.1909
提示：这些项目都在同一解决方法下，需要依次打开运行，可以选中项目-》右键-》设置启动项目，然后运行：
| Topic | 描述 |
| Bootstrapper and the Shell | 创建一个基本的引导程序和shell |
| Regions | 创建一个区域 |
| Custom Region Adapter | 为StackPanel创建自定义区域适配器 |
| View Discovery | 使用视图发现自动注入视图 |
| View Injection | 使用视图注入手动添加和删除视图 |
| View Activation/Deactivation | 手动激活和停用视图 |
| Modules with App.config | 使用应用加载模块。配置文件 |
| Modules with Code | 使用代码加载模块 |
| Modules with Directory | 从目录加载模块 |
| Modules loaded manually | 使用IModuleManager手动加载模块 |
| ViewModelLocator | 使用ViewModelLocator |
| ViewModelLocator - Change Convention | 更改ViewModelLocator命名约定 |
| ViewModelLocator - Custom Registrations | 为特定视图手动注册ViewModels |
| DelegateCommand | 使用DelegateCommand和DelegateCommand<T> |
| CompositeCommands | 了解如何使用CompositeCommands作为单个命令调用多个命令 |
| IActiveAware Commands | 使您的命令IActiveAware仅调用激活的命令 |
| Event Aggregator | 使用IEventAggregator |
| Event Aggregator - Filter Events | 订阅事件时筛选事件 |
| RegionContext | 使用RegionContext将数据传递到嵌套区域 |
| Region Navigation | 请参见如何实现基本区域导航 |
| Navigation Callback | 导航完成后获取通知 |
| Navigation Participation | 通过INavigationAware了解视图和视图模型导航参与 |
| Navigate to existing Views | 导航期间控制视图实例 |
| Passing Parameters | 将参数从视图/视图模型传递到另一个视图/视图模型 |
| Confirm/cancel Navigation | 使用IConfirmNavigationReqest界面确认或取消导航 |
| Controlling View lifetime | 使用IRegionMemberLifetime自动从内存中删除视图 |
| Navigation Journal | 了解如何使用导航日志 |
① BootstrapperShell启动界面：
这个主要演示Prism框架搭建的用法：
step1：在nuget上引用Prsim.Unity
step2：修改App.xaml：设置引导程序
<Application x: xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:BootstrapperShell"> <Application.Resources> </Application.Resources></Application>
public partial class App : Application { protected override void OnStartup(StartupEventArgs e) { base.OnStartup(e); var bootstrapper = new Bootstrapper(); bootstrapper.Run(); } }step3：在引导程序中设置启动项目：
using Unity;using Prism.Unity;using BootstrapperShell.Views;using System.Windows;using Prism.Ioc;namespace BootstrapperShell{ class Bootstrapper : PrismBootstrapper { protected override DependencyObject CreateShell() { return Container.Resolve<MainWindow>(); } protected override void RegisterTypes(IContainerRegistry containerRegistry) { } }}step4：在MainWindow.xaml中显示个字符串
<Window x: xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Shell" Height="350" Width="525"> <Grid> <ContentControl Content="Hello from Prism" /> </Grid></Window>
②ViewInjection：视图注册
MainWindow.xaml：通过ContentControl 关联视图
<Window x: xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:prism="http://prismlibrary.com/" Title="Shell" Height="350" Width="525"> <DockPanel LastChildFill="True"> <Button DockPanel.Dock="Top" Click="Button_Click">Add View</Button> <ContentControl prism:RegionManager.RegionName="ContentRegion" /> </DockPanel></Window>
MainWindow.xaml.cs：鼠标点击后通过IRegion 接口注册视图
public partial class MainWindow : Window { IContainerExtension _container; IRegionManager _regionManager; public MainWindow(IContainerExtension container, IRegionManager regionManager) { InitializeComponent(); _container = container; _regionManager = regionManager; } private void Button_Click(object sender, RoutedEventArgs e) { var view = _container.Resolve<ViewA>(); IRegion region = _regionManager.Regions["ContentRegion"]; region.Add(view); } }③ActivationDeactivation：视图激活和注销
MainWindow.xaml.cs：这里在窗体构造函数中注入了一个容器扩展接口和一个regin管理器接口，分别用来装载视图和注册regin，窗体的激活和去激活分别通过regions的Activate和Deactivate方法实现
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); } }④UsingEventAggregator：事件发布订阅
事件类定义：
public class MessageSentEvent : PubSubEvent<string> { }注册两个组件：ModuleA和ModuleB
protected override void ConfigureModuleCatalog(IModuleCatalog moduleCatalog) { moduleCatalog.AddModule<ModuleA.ModuleAModule>(); moduleCatalog.AddModule<ModuleB.ModuleBModule>(); }ModuleAModule 中注册视图MessageView
public class ModuleAModule : IModule { public void OnInitialized(IContainerProvider containerProvider) { var regionManager = containerProvider.Resolve<IRegionManager>(); regionManager.RegisterViewWithRegion("LeftRegion", typeof(MessageView)); } public void RegisterTypes(IContainerRegistry containerRegistry) { } }MessageView.xaml：视图中给button俺妞妞绑定命令
<UserControl x: xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:prism="http://prismlibrary.com/" prism:ViewModelLocator.AutoWireViewModel="True" Padding="25"> <StackPanel> <TextBox Text="{Binding Message}" Margin="5"/> <Button Command="{Binding SendMessageCommand}" Content="Send Message" Margin="5"/> </StackPanel></UserControl>MessageViewModel.cs：在vm中把界面绑定的命令委托给SendMessage，然后在方法SendMessage中发布消息：
using Prism.Commands;using Prism.Events;using Prism.Mvvm;using UsingEventAggregator.Core;namespace ModuleA.ViewModels{ public class MessageViewModel : BindableBase { IEventAggregator _ea; private string _message = "Message to Send"; public string Message { get { return _message; } set { SetProperty(ref _message, value); } } public DelegateCommand SendMessageCommand { get; private set; } public MessageViewModel(IEventAggregator ea) { _ea = ea; SendMessageCommand = new DelegateCommand(SendMessage); } private void SendMessage() { _ea.GetEvent<MessageSentEvent>().Publish(Message); } }}在MessageListViewModel 中接收并显示接收到的消息：
public class MessageListViewModel : BindableBase { IEventAggregator _ea; private ObservableCollection<string> _messages; public ObservableCollection<string> Messages { get { return _messages; } set { SetProperty(ref _messages, value); } } public MessageListViewModel(IEventAggregator ea) { _ea = ea; Messages = new ObservableCollection<string>(); _ea.GetEvent<MessageSentEvent>().Subscribe(MessageReceived); } private void MessageReceived(string message) { Messages.Add(message); } }
以上就是这个开源项目比较经典的几个入门实例，其它就不展开讲解了，有兴趣的可以下载源码自己阅读学习。
github访问速度较慢，所以我下载了一份放到的百度网盘
百度网盘链接：https://pan.baidu.com/s/10Gyks2w-R4B_3z9Jj5mRcA
提取码：0000
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开源项目链接：https://github.com/PrismLibrary/Prism-Samples-Wpf
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