Add chapter 10 sample project

Chapter10/TemplateStudioSampleApp/App.xaml.cs

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+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.UI.Xaml;
+
+using TemplateStudioSampleApp.Activation;
+using TemplateStudioSampleApp.Contracts.Services;
+using TemplateStudioSampleApp.Core.Contracts.Services;
+using TemplateStudioSampleApp.Core.Services;
+using TemplateStudioSampleApp.Helpers;
+using TemplateStudioSampleApp.Models;
+using TemplateStudioSampleApp.Services;
+using TemplateStudioSampleApp.ViewModels;
+using TemplateStudioSampleApp.Views;
+
+namespace TemplateStudioSampleApp;
+
+// To learn more about WinUI 3, see https://docs.microsoft.com/windows/apps/winui/winui3/.
+public partial class App : Application
+{
+    // The .NET Generic Host provides dependency injection, configuration, logging, and other services.
+    // https://docs.microsoft.com/dotnet/core/extensions/generic-host
+    // https://docs.microsoft.com/dotnet/core/extensions/dependency-injection
+    // https://docs.microsoft.com/dotnet/core/extensions/configuration
+    // https://docs.microsoft.com/dotnet/core/extensions/logging
+    public IHost Host
+    {
+        get;
+    }
+
+    public static T GetService<T>()
+        where T : class
+    {
+        if ((App.Current as App)!.Host.Services.GetService(typeof(T)) is not T service)
+        {
+            throw new ArgumentException($"{typeof(T)} needs to be registered in ConfigureServices within App.xaml.cs.");
+        }
+
+        return service;
+    }
+
+    public static WindowEx MainWindow { get; } = new MainWindow();
+
+    public static UIElement? AppTitlebar { get; set; }
+
+    public App()
+    {
+        InitializeComponent();
+
+        Host = Microsoft.Extensions.Hosting.Host.
+        CreateDefaultBuilder().
+        UseContentRoot(AppContext.BaseDirectory).
+        ConfigureServices((context, services) =>
+        {
+            // Default Activation Handler
+            services.AddTransient<ActivationHandler<LaunchActivatedEventArgs>, DefaultActivationHandler>();
+
+            // Other Activation Handlers
+
+            // Services
+            services.AddSingleton<ILocalSettingsService, LocalSettingsService>();
+            services.AddSingleton<IThemeSelectorService, ThemeSelectorService>();
+            services.AddTransient<IWebViewService, WebViewService>();
+            services.AddTransient<INavigationViewService, NavigationViewService>();
+
+            services.AddSingleton<IActivationService, ActivationService>();
+            services.AddSingleton<IPageService, PageService>();
+            services.AddSingleton<INavigationService, NavigationService>();
+
+            // Core Services
+            services.AddSingleton<ISampleDataService, SampleDataService>();
+            services.AddSingleton<IFileService, FileService>();
+
+            // Views and ViewModels
+            services.AddTransient<SettingsViewModel>();
+            services.AddTransient<SettingsPage>();
+            services.AddTransient<WebViewViewModel>();
+            services.AddTransient<WebViewPage>();
+            services.AddTransient<ListDetailsViewModel>();
+            services.AddTransient<ListDetailsPage>();
+            services.AddTransient<DataGridViewModel>();
+            services.AddTransient<DataGridPage>();
+            services.AddTransient<MainViewModel>();
+            services.AddTransient<MainPage>();
+            services.AddTransient<ShellPage>();
+            services.AddTransient<ShellViewModel>();
+
+            // Configuration
+            services.Configure<LocalSettingsOptions>(context.Configuration.GetSection(nameof(LocalSettingsOptions)));
+        }).
+        Build();
+
+        UnhandledException += App_UnhandledException;
+    }
+
+    private void App_UnhandledException(object sender, Microsoft.UI.Xaml.UnhandledExceptionEventArgs e)
+    {
+        // TODO: Log and handle exceptions as appropriate.
+        // https://docs.microsoft.com/windows/windows-app-sdk/api/winrt/microsoft.ui.xaml.application.unhandledexception.
+    }
+
+    protected async override void OnLaunched(LaunchActivatedEventArgs args)
+    {
+        base.OnLaunched(args);
+
+        await App.GetService<IActivationService>().ActivateAsync(args);
+    }
+}