Avalonia如何与通用主机Host集成实现MsDI-编程知识

Avalonia如何与通用主机Host集成实现MsDI

news/2024/11/18 5:45:41/文章来源:https://www.cnblogs.com/chenxigg/p/18436174

如果想在Aavalonia使用IOC，目前我能想到的就是使用Prism或者是MsDI，Prism内部使用的是DryIoc，这个和WPF几乎没什么差别，那如果我想使用微软实现的Ioc呢，也是可以的，实现方式其实很简单，就是使用IHost，其中依赖有两个库

Microsoft.Extensions.DependencyInjection
Microsoft.Extensions.Hosting

现在我门来该造App里面的代码

 1 public partial class App : Application
 2 {
 3     private static IHost? host;
 4     private IHost CreateHost()
 5         => Host.CreateDefaultBuilder(Environment.GetCommandLineArgs())
 6         .ConfigureServices(RegisterService)
 7         .Build();
 8     public override void Initialize()
 9     {
10         AvaloniaXamlLoader.Load(this);
11     }
12     public override void OnFrameworkInitializationCompleted()
13     {
14         host = CreateHost();
15         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
16         {
17             desktop.MainWindow = GetService<MainWindow>();
18         }
19         base.OnFrameworkInitializationCompleted();
20         _ = host.StartAsync();
21     }
22     public static T? GetService<T>()
23     {
24         if (host is null) return default;
25         return host.Services.GetService<T>();
26     }
27     protected virtual void RegisterService(IServiceCollection services)
28     {
29         services.AddSingleton<MainWindow>();
30         services.AddSingleton<MainWindowViewModel>();
31     }
32 }