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ServiceCollectionExtensions Methods

Extension methods for configuring dependency injection.

AddFromExisting(IServiceCollection, Type, Type)

staticextension
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public static void AddFromExisting(this IServiceCollection services, Type service, Type implementation)
Registers an existing registration of implementation as a provider of service type service.

Parameters

servicesIServiceCollection
The service collection.
serviceType
The service type being provided.
implementationType
The implementation of service.

AddFromExisting(IServiceCollection)

staticextension
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public static void AddFromExisting<TService, TImplementation>(this IServiceCollection services)
Registers an existing registration of TImplementation as a provider of service type TService.

Parameters

servicesIServiceCollection
The service collection.

TryAddFromExisting(IServiceCollection)

staticextension
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public static void TryAddFromExisting<TService, TImplementation>(this IServiceCollection services)
Registers an existing registration of TImplementation as a provider of TService if there are no existing TService implementations.

Parameters

servicesIServiceCollection
The service collection.