导航和浏览器的后退前进是一样的功能
项目结构
App.xaml.cs
using Prism.Ioc;
using Prism.Modularity;
using Prism.Unity;
using PrismWpfApp.ViewModels;
using PrismWpfApp.Views;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;namespace PrismWpfApp
{/// <summary>/// App.xaml 的交互逻辑/// </summary>public partial class App : PrismApplication{/// <summary>/// 提供主窗口的对象/// </summary>/// <returns></returns>/// <exception cref="NotImplementedException"></exception>protected override Window CreateShell(){//打开第一个窗口 ModuleWindow//return Container.Resolve<MainWindow>();return Container.Resolve<ModuleWindow>();//return new MainWindow();}/// <summary>/// 业务中所有需要注入的对象，在这个方法里注册/// </summary>/// <param name="containerRegistry"></param>/// <exception cref="NotImplementedException"></exception>protected override void RegisterTypes(IContainerRegistry containerRegistry){//注册 导航 RegisterForNavigationcontainerRegistry.RegisterForNavigation<UserControlA>();containerRegistry.RegisterForNavigation<UserControlB>();containerRegistry.RegisterForNavigation<UserControlC>();}/// <summary>/// 添加模块(代码引用)/// </summary>/// <param name="moduleCatalog"></param>//protected override void ConfigureModuleCatalog(IModuleCatalog moduleCatalog)//{// moduleCatalog.AddModule<ModuleAProfile>();// moduleCatalog.AddModule<ModuleBProfile>();// base.ConfigureModuleCatalog(moduleCatalog);//}/// <summary>/// 创建模块/// </summary>protected override IModuleCatalog CreateModuleCatalog(){return new DirectoryModuleCatalog() { ModulePath = @".\Modules" };}//protected override void OnStartup(StartupEventArgs e)//{// base.OnStartup(e);// if (new LoginWindow().ShowDialog() == true)// {// new MainWindow().ShowDialog();// }// Application.Current.Shutdown();//}}
}
ModuleWindow.xaml
<Window x:Class="PrismWpfApp.Views.ModuleWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:PrismWpfApp.Views"xmlns:prism="http://prismlibrary.com/"prism:ViewModelLocator.AutoWireViewModel="True"mc:Ignorable="d"Title="{Binding Title}" Height="450" Width="800"><Grid><Grid.RowDefinitions><RowDefinition Height="30"></RowDefinition><RowDefinition ></RowDefinition></Grid.RowDefinitions><StackPanel Grid.Row="0" Orientation="Horizontal"><Button Content="模块1" Width="80" Height="30" Command="{Binding ShowContentCommand}" CommandParameter="UserControl1" ></Button><Button Content="模块2" Width="80" Height="30" Command="{Binding ShowContentCommand}" CommandParameter="UserControl2" ></Button><Button Content="后退" Width="80" Height="30" Command="{Binding BackCommand}" ></Button></StackPanel><ContentControl Grid.Row="1" prism:RegionManager.RegionName="ContentRegions"></ContentControl></Grid>
</Window>
ModuleWindowViewModel.cs
using Prism.Commands;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace PrismWpfApp.ViewModels
{public class ModuleWindowViewModel : UiViewModelBase{/// <summary>/// Prism 提供 区域管理接口/// </summary>private readonly IRegionManager _regionManager;public ModuleWindowViewModel(IRegionManager regionManager){this.Title = "XXX系统";_regionManager = regionManager;}/// <summary>/// 记录上一步（导航记录）/// </summary>private IRegionNavigationJournal _navigationJournal;/// <summary>/// 显示区域内容/// </summary>public DelegateCommand<string> ShowContentCommand{get{return new DelegateCommand<string>((arg) =>{// 区域、模块//_regionManager.Regions["ContentRegions"].RequestNavigate(arg);NavigationParameters paras = new NavigationParameters();paras.Add("MsgA", "大家好，我是A");//模块参数传递paras.Add("MsgB", "大家好，我是B");//_regionManager.Regions["ContentRegions"].RequestNavigate(arg, paras);_regionManager.Regions["ContentRegions"].RequestNavigate(arg, callback =>{_navigationJournal = callback.Context.NavigationService.Journal;}, paras);});}}/// <summary>/// 后退 （记录好上一步后，就可以后退了）/// </summary>public DelegateCommand<string> BackCommand{get{return new DelegateCommand<string>((arg) =>{//判断是否可以后退if (_navigationJournal != null && _navigationJournal.CanGoBack){_navigationJournal.GoBack();//后退}});}}}
}
UiViewModelBase.cs
using Prism.Commands;
using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;namespace PrismWpfApp.ViewModels
{/// <summary>/// UI 层的 ViewModelBase 基类/// </summary>public abstract class UiViewModelBase : BindableBase{public UiViewModelBase(){AppDataInstance = AppData.Instance;initCommand();}public AppData _appDataInstance;/// <summary>/// 公共数据/// </summary>public AppData AppDataInstance{get { return _appDataInstance; }set{SetProperty(ref _appDataInstance, value);}}private string _systemName = "一体针焊接系统";/// <summary>/// 系统名称/// </summary>public string SystemName{get { return _systemName; }set{SetProperty(ref _systemName, value);}}private string _title = "标题";/// <summary>/// 标题/// </summary>public string Title{get { return _title; }set{SetProperty(ref _title, value);}}private void initCommand(){CloseCommand = new DelegateCommand<Window>(close);}/// <summary>/// 关闭(取消) 命令/// </summary>public DelegateCommand<Window> CloseCommand { get; set; }/// <summary>/// 关闭(取消) 方法/// </summary>public void close(Window window){if (window != null){window.Close();}}/// <summary>/// 根据名称获取开关的值/// </summary>/// <param name="name">名称</param>/// <returns>是否开启</returns>public bool GetOnOffByName(string name){var isOn = false;//if (!string.IsNullOrEmpty(name))//{// isOn = _serviceSysConfig.GetOnOffByName(name);//}return isOn;}/// <summary>/// 保存开关配置/// </summary>/// <param name="connfigName">配置名称</param>/// <param name="value">是否开启</param>/// <returns>是否成功</returns>public bool SaveOnOff(string connfigName, bool value){var isOk = false;if (!string.IsNullOrEmpty(connfigName)){//isOk = _serviceSysConfig.SaveModelByName(new SysConfigModel()//{// Name = connfigName,// ValueStr = value.ToString(),// UpdatedBy = "ADMIN",// UpdatedOn = DateTime.Now//});}return isOk;}}
}
ModuleA
UserControl1.xaml
<UserControl x:Class="ModuleA.Views.UserControl1"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:local="clr-namespace:ModuleA.Views" mc:Ignorable="d" d:DesignHeight="450" d:DesignWidth="800"><Grid><!--<TextBlock Text="我是模块1" FontSize="50"/>--><TextBlock Text="{Binding Msg}" FontSize="50"/></Grid>
</UserControl>
UserControl1ViewModel.cs
using Prism.Common;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;namespace ModuleA.ViewModels
{public class UserControl1ViewModel : BindableBase, IConfirmNavigationRequest//INavigationAware(模块切换时没有确认操作),IConfirmNavigationRequest (确认切换导航接口){//propfullprivate string _mag;public string Msg{get { return _mag; }set { _mag = value;RaisePropertyChanged();//属性更新写法2}}/// <summary>/// 确认/// </summary>/// <param name="navigationContext"></param>/// <param name="continuationCallback"></param>/// <exception cref="NotImplementedException"></exception>public void ConfirmNavigationRequest(NavigationContext navigationContext, Action<bool> continuationCallback){var boxResult = MessageBox.Show("确定切换吗?","系统提示", MessageBoxButton.YesNo);var isYes = boxResult == MessageBoxResult.Yes;continuationCallback(isYes);}/// <summary>/// 是否重用实例/// </summary>/// <param name="navigationContext"></param>/// <returns></returns>/// <exception cref="NotImplementedException"></exception>public bool IsNavigationTarget(NavigationContext navigationContext){return true;}/// <summary>/// 拦截/// </summary>/// <param name="navigationContext"></param>/// <exception cref="NotImplementedException"></exception>public void OnNavigatedFrom(NavigationContext navigationContext){}/// <summary>/// 导航到哪里去/// </summary>/// <param name="navigationContext"></param>/// <exception cref="NotImplementedException"></exception>public void OnNavigatedTo(NavigationContext navigationContext){//接收参数if (navigationContext.Parameters.ContainsKey("MsgA")){Msg = navigationContext.Parameters.GetValue<string>("MsgA");}}}
}
ModuleAProfile.cs
using ModuleA.ViewModels;
using ModuleA.Views;
using Prism.Ioc;
using Prism.Modularity;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace ModuleA
{/// <summary>/// 模块要实现 IModule 接口 /// </summary>public class ModuleAProfile : IModule{public void OnInitialized(IContainerProvider containerProvider){}/// <summary>/// 模块 服务注入/// </summary>/// <param name="containerRegistry"></param>public void RegisterTypes(IContainerRegistry containerRegistry){//导航//containerRegistry.RegisterForNavigation<UserControl1>();//自动绑定containerRegistry.RegisterForNavigation<UserControl1, UserControl1ViewModel>();//View 和 ViewModel 手动指定绑定关系}}
}
AppData
/// <summary>
/// UI层公共数据
/// </summary>
public class AppData : BindableBase
{/// <summary>/// 这样就可以在事个UI层获取到AppData类的所有公共属性和方法/// </summary>public static AppData Instance = new Lazy<AppData>(() => new AppData()).Value;/// <summary>/// 主窗体/// </summary>public MainWindow MainWindow { get; set; }
}
