Autofac 8.4.0

Autofac character Autofac logo

Autofac is an IoC container for Microsoft .NET. It manages the dependencies between classes so that applications stay easy to change as they grow in size and complexity. This is achieved by treating regular .NET classes as components.

Build status codecov NuGet

Autofac on Stack Overflow Join the chat at https://gitter.im/autofac/autofac

Get Packages

You can get Autofac by grabbing the latest NuGet package. There are several application integration and extended functionality packages to choose from. If you're feeling adventurous, continuous integration builds are on MyGet.

Release notes are available on GitHub.

Get Help

Need help with Autofac? We have a documentation site as well as API documentation. We're ready to answer your questions on Stack Overflow or check out the discussion forum.

Get Started

Our Getting Started tutorial walks you through integrating Autofac with a simple application and gives you some starting points for learning more.

Super-duper quick start:

Register components with a ContainerBuilder and then build the component container.

var builder = new ContainerBuilder();

builder.Register(c => new TaskController(c.Resolve<ITaskRepository>()));
builder.RegisterType<TaskController>();
builder.RegisterInstance(new TaskController());
builder.RegisterAssemblyTypes(controllerAssembly);

var container = builder.Build();

Resolve services from a lifetime scope - either the container or a nested scope:

var taskController = container.Resolve<TaskController>();

There is a growing number of application integration libraries that make using Autofac with your application a snap. Support for several popular frameworks is also available through the "Extras" packages.

Intrigued? Check out our Getting Started walkthrough!

Project

Autofac is licensed under the MIT license, so you can comfortably use it in commercial applications (we still love contributions though).

File issues in the repo with the associated feature/code.

Sponsors

Autofac is supported by AWS. Thanks for your contribution!

Contributing / Pull Requests

Refer to the Contributor Guide for setting up and building Autofac source.

You can also open this repository right now in VS Code.

Showing the top 20 packages that depend on Autofac.

Packages Downloads
Autofac.Extensions.DependencyInjection
Autofac implementation of the interfaces in Microsoft.Extensions.DependencyInjection.Abstractions, the .NET Framework dependency injection abstraction.
215
Autofac.Extensions.DependencyInjection
Autofac implementation of the interfaces in Microsoft.Extensions.DependencyInjection.Abstractions, the .NET Framework dependency injection abstraction.
475
Autofac.Extensions.DependencyInjection
Autofac implementation of the interfaces in Microsoft.Extensions.DependencyInjection.Abstractions, the .NET Framework dependency injection abstraction.
14,558
Autofac.Extras.DynamicProxy
Autofac extension for enabling AOP in conjunction with Castle.
506
Autofac.Extras.DynamicProxy
Autofac extension for enabling AOP in conjunction with Castle.
14,528
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
86
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
87
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
89
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
95
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
97
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
103
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
104
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
115
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
124
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
164
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
180
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
181
Quantum.Framework.Infrastructure
负责提供Ioc, AutoMapper, ScmRuntimeInfo, WorkContext, QuantumContext等核心组件, 不参与非核心组件的功能
195

Release notes are at https://github.com/autofac/Autofac/releases

Version Downloads Last updated
8.4.0 10 08/13/2025
8.3.0 20 05/10/2025
8.2.1 17 04/04/2025
8.2.0 27 12/26/2024
8.1.1 31 11/02/2024
8.1.0 31 11/11/2024
8.0.0 424 01/29/2024
7.1.0 22 11/14/2024
7.0.1 26 04/24/2023
7.0.0 21 11/14/2024
6.5.0 73 01/19/2023
6.4.0 14,415 10/11/2022
6.1.0 24 11/14/2024
6.0.0 145 11/03/2022
5.2.0 26 06/21/2022
5.1.0 20 11/14/2024
4.9.3 29 02/20/2023
4.8.0 25 11/14/2024
4.7.1 33 06/06/2022
4.7.0 32 11/13/2024
4.6.1 29 05/20/2024
4.6.0 24 11/14/2024
4.5.0 22 11/14/2024
4.4.0 24 11/11/2024
4.2.0 29 11/03/2022
4.0.0-rc3-293 28 05/09/2024
4.0.0-rc3-286 26 11/14/2024
4.0.0-rc3-280 23 11/27/2024
4.0.0-rc2-240 28 11/14/2024
4.0.0-rc1-177 32 05/16/2024
4.0.0-beta8-157 20 11/12/2024
4.0.0-beta6-110 27 06/06/2022
4.0.0-alpha2 22 11/14/2024
4.0.0-alpha1 25 11/14/2024
3.5.2 27 11/14/2024
3.5.0 22 11/14/2024
3.4.0 25 11/14/2024
3.3.1 29 05/09/2024
3.3.0 25 11/12/2024
3.2.0 21 11/14/2024
3.1.5 19 11/10/2024
3.1.4 22 11/14/2024
3.1.3 23 11/14/2024
3.1.1 22 11/11/2024
3.1.0 23 11/14/2024
3.0.0-beta2 21 11/14/2024
3.0.0-beta 25 11/12/2024
2.6.3.862 28 11/14/2024
2.6.2.859 24 11/14/2024
2.6.1.841 22 11/14/2024
2.5.1.827 25 05/20/2024
2.4.5.724 29 05/09/2024
2.4.3.700 21 11/28/2024
2.2.4.900 21 11/14/2024