1、将App.xaml中的StartupUri="MainWindow.xaml"删除。

　　2、使用NuGet安装Prism.Wpf、Prism.Core、Prism.Unity。

　　3、添加类“Bootstrapper”，编辑如下：

1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Threading.Tasks; 6 using System.Windows; 7 using Microsoft.Practices.Unity; 8 using ActivationDeactivation.Views; 9 using Prism.Unity;10 11 namespace ActivationDeactivation12 {13     class Bootstrapper:UnityBootstrapper14     {15         protected override DependencyObject CreateShell()16         {17             return Container.Resolve
     
      ();18         }19 20         protected override void InitializeShell()21         {22             Application.Current.MainWindow.Show();23         }24     }25 }
     

　　4、创建文件夹Views，将MainWindow.xaml移动到此文件夹中。向Views文件夹中添加ViewA.xaml，ViewB.xaml。

　　

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1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Threading.Tasks; 6 using System.Windows; 7 using System.Windows.Controls; 8 using System.Windows.Data; 9 using System.Windows.Documents;10 using System.Windows.Input;11 using System.Windows.Media;12 using System.Windows.Media.Imaging;13 using System.Windows.Navigation;14 using System.Windows.Shapes;15 using Microsoft.Practices.Unity;16 using Prism.Regions;17 18 namespace ActivationDeactivation.Views19 {20     /// 
21     /// MainWindow.xaml 的交互逻辑22     /// 
23     public partial class MainWindow : Window24     {25         private IUnityContainer _container;26         private IRegionManager _regionManager;27         private IRegion _region;28 29         private ViewA _viewA;30         private ViewB _viewB;31         public MainWindow(IUnityContainer unityContainer,IRegionManager regionManager)32         {33             InitializeComponent();34             _container = unityContainer;35             _regionManager = regionManager;36             37 38             this.Loaded += MainWindow_Loaded;39         }40 41         private void MainWindow_Loaded(object sender, RoutedEventArgs e)42         {43             _viewA = _container.Resolve
     
      ();44             _viewB = _container.Resolve
      
       ();45 46             _region = _regionManager.Regions["ContentRegion"];47 48             _region.Add(_viewA);49             _region.Add(_viewB);50         }51 52         private void BtnViewA_OnClick(object sender, RoutedEventArgs e)53         {54             _region.Activate(_viewA);55         }56 57         private void BtnDeactiveViewA_OnClick(object sender, RoutedEventArgs e)58         {59             _region.Deactivate(_viewA);60         }61 62         private void BtnViewB_OnClick(object sender, RoutedEventArgs e)63         {64             _region.Activate(_viewB);65         }66 67         private void BtnDeactiveViewB_OnClick(object sender, RoutedEventArgs e)68         {69             _region.Deactivate(_viewB);70         }71     }72 }
      
     

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　　5、修改App.xaml

1 using System; 2 using System.Collections.Generic; 3 using System.Configuration; 4 using System.Data; 5 using System.Linq; 6 using System.Threading.Tasks; 7 using System.Windows; 8  9 namespace ActivationDeactivation10 {11     /// 
12     /// App.xaml 的交互逻辑13     /// 
14     public partial class App : Application15     {16         protected override void OnStartup(StartupEventArgs e)17         {18             base.OnStartup(e);19 20             var bootstrapper = new Bootstrapper();21             bootstrapper.Run();22         }23     }24 }