PreserveExistingDefaults(TLimit, TActivatorData, TSingleRegistrationStyle) Method (IRegistrationBuilder(TLimit, TActivatorData, TSingleRegistrationStyle))

RegistrationExtensionsPreserveExistingDefaultsTLimit, TRegistrationStyle Method (IRegistrationBuilderTLimit, ScanningActivatorData, TRegistrationStyle)

Specifies that the components 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, ScanningActivatorData, TRegistrationStyle> PreserveExistingDefaults<TLimit, TRegistrationStyle>(
	this IRegistrationBuilder<TLimit, ScanningActivatorData, TRegistrationStyle> registration
)

<ExtensionAttribute>
Public Shared Function PreserveExistingDefaults(Of TLimit, TRegistrationStyle) ( 
	registration As IRegistrationBuilder(Of TLimit, ScanningActivatorData, TRegistrationStyle)
) As IRegistrationBuilder(Of TLimit, ScanningActivatorData, TRegistrationStyle)

Parameters

registration: Type: Autofac.BuilderIRegistrationBuilderTLimit, ScanningActivatorData, TRegistrationStyle
Registration to set service mapping on.

Type Parameters

TLimit: Registration limit type.
TRegistrationStyle: Registration style.

Return Value

Type: IRegistrationBuilderTLimit, ScanningActivatorData, TRegistrationStyle
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, ScanningActivatorData, TRegistrationStyle. 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).

Reference

RegistrationExtensions Class

PreserveExistingDefaults Overload

Autofac Namespace