RegistrationExtensionsIfNotRegisteredTLimit, TActivatorData, TStyle Method |
Attaches a predicate such that a registration will only be made if
a specific service type is not already registered.
The predicate will run at registration time, not runtime, to determine
whether the registration should execute.
Namespace:
Autofac
Assembly:
Autofac (in Autofac.dll) Version: 6.0.0+39696a967e8826f7f1ebc8c1ff4523c9dd75abe0
Syntax public static IRegistrationBuilder<TLimit, TActivatorData, TStyle> IfNotRegistered<TLimit, TActivatorData, TStyle>(
this IRegistrationBuilder<TLimit, TActivatorData, TStyle> registration,
Type serviceType
)
<ExtensionAttribute>
Public Shared Function IfNotRegistered(Of TLimit, TActivatorData, TStyle) (
registration As IRegistrationBuilder(Of TLimit, TActivatorData, TStyle),
serviceType As Type
) As IRegistrationBuilder(Of TLimit, TActivatorData, TStyle)
Parameters
- registration
- Type: Autofac.BuilderIRegistrationBuilderTLimit, TActivatorData, TStyle
The registration to configure. - serviceType
- Type: SystemType
The service type to check for to determine if the registration should be made.
Note this is the *service type* - the As<T> part.
Type Parameters
- TLimit
- Registration limit type.
- TActivatorData
- Activator data type.
- TStyle
- Registration style.
Return Value
Type:
IRegistrationBuilderTLimit,
TActivatorData,
TStyleA registration builder allowing further configuration of the component.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type
IRegistrationBuilderTLimit,
TActivatorData,
TStyle. 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