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ContravariantRegistrationSourceRegistrationsFor Method

Retrieve registrations for an unregistered service, to be used by the container.

Namespace:  Autofac.Features.Variance
Assembly:  Autofac (in Autofac.dll) Version: 6.0.0+39696a967e8826f7f1ebc8c1ff4523c9dd75abe0
Syntax
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public IEnumerable<IComponentRegistration> RegistrationsFor(
	Service service,
	Func<Service, IEnumerable<ServiceRegistration>> registrationAccessor
)

Parameters

service
Type: Autofac.CoreService
The service that was requested.
registrationAccessor
Type: SystemFuncService, IEnumerableServiceRegistration
A function that will return existing registrations for a service.

Return Value

Type: IEnumerableIComponentRegistration
Registrations providing the service.

Implements

IRegistrationSourceRegistrationsFor(Service, FuncService, IEnumerableServiceRegistration)
Remarks
If the source is queried for service s, and it returns a component that implements both s and s', then it will not be queried again for either s or s'. This means that if the source can return other implementations of s', it should return these, plus the transitive closure of other components implementing their additional services, along with the implementation of s. It is not an error to return components that do not implement service.
See Also