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RegistrationExtensionsPreserveExistingDefaultsTLimit, TActivatorData, TSingleRegistrationStyle Method (IRegistrationBuilderTLimit, TActivatorData, TSingleRegistrationStyle)

Specifies that the component being registered should only be made the default for services that have not already been registered.

Namespace:  Autofac
Assembly:  Autofac (in Autofac.dll) Version: 6.0.0+39696a967e8826f7f1ebc8c1ff4523c9dd75abe0
Syntax
Copy
public static IRegistrationBuilder<TLimit, TActivatorData, TSingleRegistrationStyle> PreserveExistingDefaults<TLimit, TActivatorData, TSingleRegistrationStyle>(
	this IRegistrationBuilder<TLimit, TActivatorData, TSingleRegistrationStyle> registration
)
where TSingleRegistrationStyle : SingleRegistrationStyle

Parameters

registration
Type: Autofac.BuilderIRegistrationBuilderTLimit, TActivatorData, TSingleRegistrationStyle
Registration to set service mapping on.

Type Parameters

TLimit
Registration limit type.
TActivatorData
Activator data type.
TSingleRegistrationStyle
Registration style.

Return Value

Type: IRegistrationBuilderTLimit, TActivatorData, TSingleRegistrationStyle
Registration builder allowing the registration to be configured.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IRegistrationBuilderTLimit, TActivatorData, TSingleRegistrationStyle. 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).
See Also