Introduction

Autofac 1.4 is the current version.

1.0

Establishes the concepts of mixed expressions and autowiring, automatic component disposal and implementation-type hiding as useful foundations for dependency injection in .NET.

Status: Obsolete

Release Date: Nov. 2007

• Feature-complete core
• Suitable replacement for many existing containers
• Some integrations available, enough extension points to enable any other popular integration to be done
• All future 1.0 increments will maintain binary compatibility with each other

1.1

Eases deployment into a wider variety of environments. Increases accessibility to developers and teams not wishing to build their own integration facilities and extensions.

Status: In Maintenance

Release Date: 19 Mar. 2008

• More extensibility points
• Core Mono support
• Focus on deployment - strong named assemblies etc.
• Packaging of 'extras' that may be handy but don't warrant core inclusion
• Minor interface improvements, internal refactorings & optimisations
• Largely backwards-compatible, some minor find/replace/rebuild migration

1.2

Status: Released

Release Date: 20 May 2008

Internal implementation improvements. More extensibility. More consistent behaviour. Better performance. Minor feature additions.

• Registrars now support OnlyIf(c => x) to register components selectively based on a predicate over the target container
• The additional registrar method DefaultOnly() will filter the services that a registration provides so that existing registrations will not be overridden
• IComponentRegistration exposes a Preparing event that can be used to add/modify parameters or to short-circuit the activation process
• Everything is now taggable: tags are associated with registrations using the InContext<T>(T tag) builder method
• Extended properties (for IComponentDescriptor) can now be specified in configuration files
• Constructors can be chosen for generics and automatic registrations
• Some components have moved to the new Autofac Contrib project
• Factories generated by the Autofac.Extras.GeneratedFactories extension are now threadsafe
• Circular dependency error messages are better
• IComponentDescriptor exposes a BestKnownImplementationType property
• TaggedRegistration<T> now implements the non-generic IRegistrationDecorator to make accessing the InnerRegistration member easier in advanced scenarios
• Improved error messages when IContainerProviderAccessor is not implemented correctly on a user's HttpApplication class (System.Web integration)
• Necessary hooks added for DynamicProxy2 support
• Intellisense documentation included in release zip files
• Default InContext() components to ContainerScoped()

(Original integration features were rescheduled and expanded. These will now be implemented in the Autofac Contrib project on its timeline instead)

1.3

Status: Released

Ongoing maintenance not binary-compatible with 1.2.

• Additional convenience overloads for Resolve ( Issue 61 )
• Performance improvements ( Issue 73 )
• Allows partially-trusted callers by default ( Issue 75 )
• Interface improvements for languages without extension methods ( Issue 69 )
• Further error message improvements
• Improved abstractions for parameters

1.4

Ongoing maintenance not binary-compatible with 1.3. Aligning codebase with goals for .NET 4.0 support.

• Merged Autofac.Integration.Web.Mvc into Autofac.Integration.Web
• ImplicitCollectionSupportModule for 'resolve-all' semantics ( Issue 93 )
• Non-Generic Overloads for RegisterCollection ( Issue 93 )
• Arrays supported in collection registrations ( Issue 82 )
• Parameters now passed to collection registrations ( Issue 92 )
• Reflection activator bug fix ( Issue 88 )
• Silverlight 2.0 now a supported platform
• Prototype MEF integration
• No longer supports .NET 2.0 (new assembly layout)

Since 1.4.4:

• Arguments can be specified for Open Generic and Automatic registrations
• ResolvedParameter type added - flexible parameter handling for reflection-based registrations
• Non-generic overloads added for generated factories
• Overloads for ResolveOptional() passing service name added
• ContainerProviderContainer added to Autofac.Integration.Web

2.0

Keep Autofac current, taking advantage of and responding to advances in .NET development technologies.

Status: Planning