Autofac 7.0.1

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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.

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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.
25
Autofac.Extensions.DependencyInjection
Autofac implementation of the interfaces in Microsoft.Extensions.DependencyInjection.Abstractions, the .NET Framework dependency injection abstraction.
26
Autofac.Extensions.DependencyInjection
Autofac implementation of the interfaces in Microsoft.Extensions.DependencyInjection.Abstractions, the .NET Framework dependency injection abstraction.
27
Autofac.Extensions.DependencyInjection
Autofac implementation of the interfaces in Microsoft.Extensions.DependencyInjection.Abstractions, the .NET Framework dependency injection abstraction.
52
Autofac.Extensions.DependencyInjection
Autofac implementation of the interfaces in Microsoft.Extensions.DependencyInjection.Abstractions, the .NET Framework dependency injection abstraction.
81
Autofac.Extensions.DependencyInjection
Autofac implementation of the interfaces in Microsoft.Extensions.DependencyInjection.Abstractions, the .NET Framework dependency injection abstraction.
117
Autofac.Extensions.DependencyInjection
Autofac implementation of the interfaces in Microsoft.Extensions.DependencyInjection.Abstractions, the .NET Framework dependency injection abstraction.
158
Finsa.CaravanCore
Package Description
25
Finsa.CaravanCore
Package Description
27
Finsa.CaravanCore
Package Description
30
Finsa.CaravanCore
Package Description
42
Finsa.CaravanCore
Package Description
58
Finsa.CaravanCore
Package Description
65
Finsa.CaravanCore
Package Description
207
TweetinviAPI
Tweetinvi is an intuitive .NET C# library to access the Twitter REST API. It is a .NET Core library that can be used for development in ASP.NET, Xamarin Android, Xamarin iOS and Windows 10 Universal Apps.
27
TweetinviAPI
Tweetinvi is an intuitive .NET C# library to access the Twitter REST API. It is a .NET Core library that can be used for development on Windows, Windows RT, Windows Phone, Xamarin Android and Xamarin iOS. Tweetinvi is also compatible with Windows 10 Universal Apps.
28
TweetinviAPI
Tweetinvi is an intuitive .NET C# library to access the Twitter REST API. It is a Portable Class Library that can be used for development on Windows, Windows RT, Windows Phone, Mono, Xamarin Android and Xamarin iOS. Tweetinvi is also compatible for Universal App development and .NETCore.
29

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

Version Downloads Last updated
8.3.0 9 05/08/2025
8.2.1 12 04/05/2025
8.2.0 16 01/02/2025
8.1.1 17 10/17/2024
8.1.0 16 09/06/2024
8.0.0 20 02/10/2024
7.1.0 24 11/30/2023
7.0.1 22 02/10/2024
7.0.0 20 02/10/2024
6.5.0 20 11/23/2022
6.4.0 24 11/16/2023
6.3.0 180 10/11/2021
6.2.0 30 04/21/2021
6.1.0 100 01/21/2021
6.0.0 26 10/21/2020
5.2.0 47 06/21/2020
5.1.4 20 02/10/2024
5.1.3 18 02/10/2024
5.1.2 19 03/02/2020
5.1.1 19 02/10/2024
5.1.0 18 02/10/2024
5.0.0 22 02/10/2020
4.9.4 84 02/10/2020
4.9.3 17 02/10/2024
4.9.2 20 02/10/2024
4.9.1 26 02/10/2020
4.9.0 19 02/10/2024
4.9.0-beta1 20 02/10/2024
4.8.1 20 02/10/2024
4.8.0 20 02/10/2024
4.7.1 21 02/10/2024
4.7.0 20 02/10/2024
4.6.2 17 02/10/2024
4.6.1 19 02/10/2024
4.6.0 17 02/10/2024
4.5.0 18 02/10/2024
4.4.0 18 02/10/2024
4.3.0 21 02/10/2024
4.2.1 18 02/10/2024
4.2.0 17 02/10/2024
4.1.1 18 02/10/2024
4.1.0 22 02/10/2024
4.0.1 21 02/10/2024
4.0.0 20 08/24/2022
4.0.0-rc3-316 20 02/10/2024
4.0.0-rc3-309 18 02/10/2024
4.0.0-rc3-293 19 02/10/2024
4.0.0-rc3-286 19 02/10/2024
4.0.0-rc3-280 17 02/10/2024
4.0.0-rc2-240 20 02/10/2024
4.0.0-rc1-177 16 02/10/2024
4.0.0-beta8-157 17 02/10/2024
4.0.0-beta7-130 16 02/10/2024
4.0.0-beta6-110 19 02/10/2024
4.0.0-beta5-90 19 02/10/2024
4.0.0-alpha2 20 02/10/2024
4.0.0-alpha1 20 02/10/2024
3.5.2 20 02/10/2020
3.5.0 19 02/10/2024
3.4.1 19 02/10/2024
3.4.0 18 02/10/2024
3.3.1 16 02/10/2024
3.3.0 18 02/10/2024
3.2.0 18 02/10/2024
3.1.5 21 02/10/2024
3.1.4 18 02/10/2024
3.1.3 18 02/10/2024
3.1.1 16 02/10/2024
3.1.0 19 02/10/2024
3.0.2 20 02/10/2024
3.0.1 18 02/10/2024
3.0.0 18 02/10/2024
3.0.0-beta2 20 02/10/2024
3.0.0-beta 17 02/10/2024
2.6.3.862 17 02/10/2024
2.6.2.859 17 02/10/2024
2.6.1.841 18 02/10/2024
2.5.2.830 20 02/10/2024
2.5.1.827 18 02/10/2024
2.4.5.724 20 02/10/2024
2.4.4.705 20 02/10/2024
2.4.3.700 19 02/10/2024
2.4.2.696 19 02/10/2024
2.3.2.632 19 02/10/2024
2.2.4.900 18 02/10/2024