v7.0.0

Version 7.0.0 is a major increment due to some changes in the target frameworks and some behavioral changes. We summarize these in the documentation, but included here as well:

New Features

• Properties marked required will now be injected by default. As part of this, the default property injector using PropertiesAutowired() will not inject properties marked required. The documentation has more explanation with examples.
• Ability to isolate AssemblyLoadContext by lifetime scope. A new method, BeginLoadContextLifetimeScope, has been added that allows you to create a lifetime scope tied to a specific AssemblyLoadContext. When the scope is disposed, Autofac will perform a best-effort release of all references to types from that context so the assemblies can be unloaded. The documentation explains this in greater detail.
• Documentation links in exception messages. Common Autofac exceptions now include links to our online documentation to help you understand what the exceptions mean and how to troubleshoot them.

Issues and PRs

• Add documentation links to common exceptions by @tillig in #1359
• Fix #1360: Unify the "no constructors found" reporting by @tillig in #1362
• Add support for required properties by @alistairjevans in #1364
• Mark RegisterGeneratedFactory obsolete by @tillig in #1366
• Isolate service information computed in child scopes from the parent scope by @alistairjevans in #1350

Full Changelog: v6.5.0...v7.0.0

Breaking Changes

• net50 no longer targeted. Autofac will still work with .NET 5 via the netstandard2.1 target, but we recommend you upgrade to a later, supported version of .NET.
• Properties marked required will now be injected by default. As noted above, required properties will be injected. This is a behavioral change from Autofac 6.0.
• Default property injection ignores required properties. Using PropertiesAutowired() will ignore required properties because it's assumed they must be set during construction rather than post-object-creation.
• RegisterGeneratedFactory is obsolete. This feature has been replaced by the Func<X, Y, B> built-in relationship and delegate factories.
• ILifetimeScope has a new BeginLoadContextLifetimeScope method. If you have mocks of ILifetimeScope this method must now be implemented.