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 Microsoft.Practices.Unity; 2 using Prism.Unity; 3 using System.Windows; 4 using BootstrapperShell.Views; 5  6 namespace BootstrapperShell 7 { 8     public class Bootstrapper : UnityBootstrapper 9     {10         protected override DependencyObject CreateShell()11         {12             return Container.Resolve
     
      ();13         }14 15         protected override void InitializeShell()16         {17             Application.Current.MainWindow.Show();18         }19     }20 }
     

　　4、创建文件夹Views，将MainWindow.xaml移动到此文件夹中。创建文件夹ViewModels，新建类MainWindowViewModel.cs。注意：VM类的名称一定是V+“ViewModel”，例如MainWindow+“ViewModel”。

　　　　

1 
     
      11     
      
       12         
       13         
       14         
       15         
       16         
       17         
       18     
      19 
     

 

1 using System; 2 using Prism.Commands; 3 using Prism.Mvvm; 4  5 namespace UsingDelegateCommands.ViewModels 6 { 7     public class MainWindowViewModel:BindableBase 8     { 9         private bool _isEnabled;10         public bool IsEnabled11         {12             get { return _isEnabled; }13             set14             {15                 SetProperty(ref _isEnabled, value);16                 //增加执行监控17                 ExecuteDelegateCommand.RaiseCanExecuteChanged();18             }19         }20 21         private string _updateText;22         public string UpdateText23         {24             get { return _updateText; }25             set { SetProperty(ref _updateText, value); }26         }27 28         public DelegateCommand ExecuteDelegateCommand { get; private set; }29         public DelegateCommand
     
       ExecuteGenericDelegateCommand { get; private set; }30         public DelegateCommand DelegateCommandObservesProperty { get; private set; }31         public DelegateCommand DelegateCommandObservesCanExecute { get; private set; }32 33         public MainWindowViewModel()34         {35             ExecuteDelegateCommand = new DelegateCommand(Execute, CanExecute);36 37             DelegateCommandObservesProperty = new DelegateCommand(Execute, CanExecute).ObservesProperty(() => IsEnabled);38 39             DelegateCommandObservesCanExecute = new DelegateCommand(Execute).ObservesCanExecute(() => IsEnabled);40 41             ExecuteGenericDelegateCommand = new DelegateCommand
      
       (ExecuteGeneric).ObservesCanExecute(() => IsEnabled);42         }43 44         private void Execute()45         {46             UpdateText = $"Updated:{DateTime.Now}";47         }48 49         private void ExecuteGeneric(string parameter)50         {51             UpdateText = parameter;52         }53 54         private bool CanExecute()55         {56             return IsEnabled;57         }58     }59 }
      
     

　　5、修改App.xaml

1 using System.Collections.Generic; 2 using System.Configuration; 3 using System.Data; 4 using System.Linq; 5 using System.Threading.Tasks; 6 using System.Windows; 7  8 namespace BootstrapperShell 9 {10     /// 
11     /// App.xaml 的交互逻辑12     /// 
13     public partial class App : Application14     {15         protected override void OnStartup(StartupEventArgs e)16         {17             base.OnStartup(e);18 19             var bootstrapper = new Bootstrapper();20             bootstrapper.Run();21         }22     }23 }

 　　6、最终结果：