WPF 通用主机

App.xaml.cs

private IHost host = null!;

public static IServiceProvider ServiceProvider { get; private set; } = null!;

protected override async void OnStartup(StartupEventArgs e)
{
    host = CreateHostBuilder(e.Args).Build();
    ServiceProvider = host.Services;
    await host.StartAsync();
    MainWindow = host.Services.GetRequiredService<MainWindow>();
    MainWindow.Show();
    base.OnStartup(e);
}

protected override async void OnExit(ExitEventArgs e)
{
    await host.StopAsync();
    host.Dispose();
    base.OnExit(e);
}