Add MsExtensionsHostingSample sample project

README.adoc

@@ -89,6 +89,10 @@ Each sample is tagged with it's difficulty. The degree of difficulty describes h
 | 🐥 Easy
 | MVVM, Data-Validation, Exception, Error, Error-Message, Binding
 
+| link:src/Avalonia.Samples/MVVM/MsExtensionsHostingSample[Avalonia and .NET Generic Host]
+| 🐥 Easy
+| .NET Generic Host, DI, Configuration, Logging, MVVM
+
 |===
 
 === ✒️ Drawing-Samples

src/Avalonia.Samples/Avalonia.Samples.sln

@@ -48,6 +48,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestableApp.Headless.XUnit"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestableApp.Appium", "Testing\TestableApp.Appium\TestableApp.Appium.csproj", "{F5CB3DA2-EB59-4792-A1B3-49F600F7C130}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MsExtensionsHostingSample", "MVVM\MsExtensionsHostingSample\MsExtensionsHostingSample.csproj", "{062E5397-CB68-4B3B-9707-4A9B59BDCC1D}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -110,6 +112,10 @@ Global
 		{F5CB3DA2-EB59-4792-A1B3-49F600F7C130}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F5CB3DA2-EB59-4792-A1B3-49F600F7C130}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{F5CB3DA2-EB59-4792-A1B3-49F600F7C130}.Release|Any CPU.Build.0 = Release|Any CPU
+		{062E5397-CB68-4B3B-9707-4A9B59BDCC1D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{062E5397-CB68-4B3B-9707-4A9B59BDCC1D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{062E5397-CB68-4B3B-9707-4A9B59BDCC1D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{062E5397-CB68-4B3B-9707-4A9B59BDCC1D}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -129,6 +135,7 @@ Global
 		{B8CB5C57-07ED-4BC6-ACE8-F05E428E3EB5} = {85B157B3-F701-4F75-B4F1-EC2287729480}
 		{BDA7536E-26FD-436F-AAC8-F8A2B500548E} = {85B157B3-F701-4F75-B4F1-EC2287729480}
 		{F5CB3DA2-EB59-4792-A1B3-49F600F7C130} = {85B157B3-F701-4F75-B4F1-EC2287729480}
+		{062E5397-CB68-4B3B-9707-4A9B59BDCC1D} = {932FD4A5-FCE7-4428-A0C1-C0392D90A21A}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {C246CAB0-0837-4EE4-A22D-28B3C74930B4}

src/Avalonia.Samples/MVVM/MsExtensionsHostingSample/App.axaml

@@ -0,0 +1,10 @@
+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="MsExtensionsHostingSample.App"
+             RequestedThemeVariant="Default">
+             <!-- "Default" ThemeVariant follows system theme variant. "Dark" or "Light" are other available options. -->
+
+    <Application.Styles>
+        <FluentTheme />
+    </Application.Styles>
+</Application>

src/Avalonia.Samples/MVVM/MsExtensionsHostingSample/App.axaml.cs

@@ -0,0 +1,69 @@
+using System;
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Markup.Xaml;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using MsExtensionsHostingSample.Models;
+using MsExtensionsHostingSample.Services;
+using MsExtensionsHostingSample.Services.Interfaces;
+using MsExtensionsHostingSample.ViewModels;
+using MsExtensionsHostingSample.Views;
+
+namespace MsExtensionsHostingSample;
+
+public partial class App : Application
+{
+    public IHost? GlobalHost { get; private set; }
+
+    public override void Initialize()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public override async void OnFrameworkInitializationCompleted()
+    {
+        var hostBuilder = CreateHostBuilder();
+        var host = hostBuilder.Build();
+        GlobalHost = host;
+
+        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+        {
+            desktop.MainWindow = new MainWindow
+            {
+                DataContext = GlobalHost.Services.GetRequiredService<MainWindowViewModel>()
+            };
+            desktop.Exit += (sender, args) =>
+            {
+                GlobalHost.StopAsync(TimeSpan.FromSeconds(5)).GetAwaiter().GetResult();
+                GlobalHost.Dispose();
+                GlobalHost = null;
+            };
+        }
+
+        DataTemplates.Add(GlobalHost.Services.GetRequiredService<ViewLocator>());
+
+        base.OnFrameworkInitializationCompleted();
+
+        // Usually, we don't want to block main UI thread.
+        // But if it's required to start async services before we create any window,
+        // then don't set any MainWindow, and simply call Show() on a new window later after async initialization. 
+        await host.StartAsync();
+    }
+
+    private static HostApplicationBuilder CreateHostBuilder()
+    {
+        // Alternatively, we can use Host.CreateDefaultBuilder, but this sample focuses on HostApplicationBuilder.
+        var builder = Host.CreateApplicationBuilder(Environment.GetCommandLineArgs());
+
+        builder.Services.AddOptions<WeatherSettings>().Bind(builder.Configuration.GetSection("Weather"));
+        builder.Services.AddHostedService<HostedBackgroundService>();
+
+        builder.Services.AddTransient<IWeatherService, WeatherService>();
+        builder.Services.AddTransient<ViewLocator>();
+        builder.Services.AddTransient<MainWindowViewModel>();
+
+        builder.Services.AddView<DayReportViewModel, DayReportView>();
+        return builder;
+    }
+}

src/Avalonia.Samples/MVVM/MsExtensionsHostingSample/Models/DayReport.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace MsExtensionsHostingSample.Models;
+
+public record DayReport(
+    DateOnly Date,
+    string WeatherCondition,
+    double Temperature,
+    string TemperatureUnit,
+    double RelativeHumidity,
+    double WindSpeed);

src/Avalonia.Samples/MVVM/MsExtensionsHostingSample/Models/WeatherSettings.cs

@@ -0,0 +1,6 @@
+namespace MsExtensionsHostingSample.Models;
+
+public class WeatherSettings
+{
+    public string Unit { get; set; } = "C";
+}

src/Avalonia.Samples/MVVM/MsExtensionsHostingSample/MsExtensionsHostingSample.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+    <PropertyGroup>
+        <OutputType>WinExe</OutputType>
+        <TargetFramework>net7.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
+        <ApplicationManifest>app.manifest</ApplicationManifest>
+        <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <AvaloniaResource Include="Assets\**"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Avalonia" Version="11.0.5"/>
+        <PackageReference Include="Avalonia.Desktop" Version="11.0.5"/>
+        <PackageReference Include="Avalonia.Themes.Fluent" Version="11.0.5"/>
+        <PackageReference Include="Avalonia.Fonts.Inter" Version="11.0.5"/>
+        <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
+        <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.0.5"/>
+        <PackageReference Include="Avalonia.ReactiveUI" Version="11.0.5"/>
+
+        <PackageReference Include="Microsoft.Extensions.Hosting" Version="7.0.1" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <Content Include="appsettings.json" CopyToOutputDirectory="PreserveNewest" />
+    </ItemGroup>
+</Project>

src/Avalonia.Samples/MVVM/MsExtensionsHostingSample/Program.cs

@@ -0,0 +1,26 @@
+using Avalonia;
+using Avalonia.ReactiveUI;
+using System;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using MsExtensionsHostingSample.Services;
+
+namespace MsExtensionsHostingSample;
+
+class Program
+{
+    // Initialization code. Don't use any Avalonia, third-party APIs or any
+    // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
+    // yet and stuff might break.
+    [STAThread]
+    public static void Main(string[] args) => BuildAvaloniaApp()
+        .StartWithClassicDesktopLifetime(args);
+
+    // Avalonia configuration, don't remove; also used by visual designer.
+    public static AppBuilder BuildAvaloniaApp()
+        => AppBuilder.Configure<App>()
+            .UsePlatformDetect()
+            .WithInterFont()
+            .LogToTrace()
+            .UseReactiveUI();
+}