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ResolutionExtensionsResolveOptionalKeyedTService Method (IComponentContext, Object)

Retrieve a service from the context, or null if the service is not registered.

Namespace:  Autofac
Assembly:  Autofac (in Autofac.dll) Version: 6.0.0+39696a967e8826f7f1ebc8c1ff4523c9dd75abe0
Syntax
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public static TService ResolveOptionalKeyed<TService>(
	this IComponentContext context,
	Object serviceKey
)
where TService : class

Parameters

context
Type: AutofacIComponentContext
The context from which to resolve the service.
serviceKey
Type: SystemObject
The name of the service.

Type Parameters

TService
The service to resolve.

Return Value

Type: TService
The component instance that provides the service, or null.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IComponentContext. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
Exceptions
See Also