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:
目录介绍
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:Class="BootstrapperShell.App" 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:Class="BootstrapperShell.Views.MainWindow" 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:Class="ViewInjection.Views.MainWindow" 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:Class="ModuleA.Views.MessageView" 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。
源码下载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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