All thestartup templates and samples are Autofac integrated. So, most of the time you don't need to manually install this package.
If you're not using a startup template, you can use theABP CLI to install it to your project. Execute the following command in the folder that contains the .csproj file of your project (suggested to add it to the executable/web project):
Finally, configureAbpApplicationCreationOptions to replace default dependency injection services by Autofac. It depends on the application type.
ASP.NET Core Application
CallUseAutofac() in theProgram.cs file as shown below:
public class Program{ public static int Main(string[] args) { CreateHostBuilder(args).Build().Run(); } internal static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args) .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup<Startup>(); }) .UseAutofac(); //Integrate Autofac!}
If you are using the staticWebApplication class, you can call theUseAutofac() extension method as shown below:
public class Program{ public async static Task Main(string[] args) { var builder = WebApplication.CreateBuilder(args); builder.Host.UseAutofac(); // Integrate Autofac! await builder.AddApplicationAsync<MyProjectNameWebModule>(); var app = builder.Build(); await app.InitializeApplicationAsync(); await app.RunAsync(); }}
Console Application
CallUseAutofac() method in theAbpApplicationFactory.Create options as shown below:
using System;using Microsoft.Extensions.DependencyInjection;using Volo.Abp;namespace AbpConsoleDemo{ class Program { static void Main(string[] args) { using (var application = AbpApplicationFactory.Create<AppModule>(options => { options.UseAutofac(); //Autofac integration })) { //... } } }}
Using the Autofac Registration API
If you want to use Autofac's advancedregistration API, you need to access theContainerBuilder object.Volo.Abp.Autofac nuget package defines theIServiceCollection.GetContainerBuilder() extension method to obtain theContainerBuilder object.
Example: Get theContainerBuilder object in theConfigureServices method of yourmodule class
public override void ConfigureServices(ServiceConfigurationContext context){ var containerBuilder = context.Services.GetContainerBuilder(); containerBuilder.RegisterType<MyService>(); // Using Autofac's registration API}
You should install theVolo.Abp.Autofac nuget package to the project that you want to use the Autofac API.
