asp.net core3.0 mvc 用 autofac

Long time no write articles, most recently with .net core3.0, a number of development issues in the way records;

1. First introduced nuget

Autofac

Autofac.Extensions.DependencyInjection

2. Modify the Program.cs add .UseServiceProviderFactory (new AutofacServiceProviderFactory ())

    public class Program
    {
        public static void Main(string[] args)
        {
            CreateHostBuilder(args).Build().Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .UseServiceProviderFactory(new AutofacServiceProviderFactory())
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                });
    }

3. Modify Startup.cs

添加 services.AddControllersWithViews().AddControllersAsServices(); 

        public void ConfigureServices(IServiceCollection services)
        {
        services.AddControllersWithViews().AddControllersAsServices();
        }    

Add to

        void ConfigureContainer public (ContainerBuilder Builder) 
        { 
            // here add service registration 
        }

You can now complete the implantation method in the controller.