wpf mvvm(prism)

 

mainwindow.xml.cs

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public partial class MainWindow : MetroWindow {     private readonly IRegionManager regionManager;     public MainWindow(IRegionManager regionManager)     {         InitializeComponent();         this.regionManager = regionManager;     }         private void Button_Click(object sender, RoutedEventArgs e)     {         regionManager.RequestNavigate("ContentRegion", nameof(DefaultView));     }       private void MetroWindow_Loaded(object sender, RoutedEventArgs e)     {         regionManager.RequestNavigate("ContentRegion", nameof(DefaultView));     } }

　　

 app.xml.cs

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public partial class App {     protected override Window CreateShell()     {         return Container.Resolve<MainWindow>();     }       protected override void RegisterTypes(IContainerRegistry containerRegistry)     {         containerRegistry.RegisterSingleton<AppDbContext>(sp =>         {             var options = new DbContextOptionsBuilder<AppDbContext>()                 .UseSqlServer("Server=127.0.0.1;Database=db1;User Id=sa;Password=123456;")                 .Options;             return new AppDbContext(options);         });         containerRegistry.RegisterForNavigation<DefaultView>();     } }