No registration for type IEnumerable<IPipelineBehavior<CreateOrganization, Identity>> could be found.

Did container configuration change with the new version? I’m receiving the following error from SimpleInjector.

No registration for type IEnumerable<IPipelineBehavior<CreateOrganization, Identity>> could be found.

with stack trace:

   at SimpleInjector.Container.ThrowMissingInstanceProducerException(Type serviceType)
   at SimpleInjector.Container.GetInstanceForRootType(Type serviceType)
   at SimpleInjector.Container.GetInstance(Type serviceType)
   at SimpleInjector.Container.GetAllInstances(Type serviceType)
   at MediatR.Internal.RequestHandlerImpl`2.GetPipeline(TRequest request, RequestHandlerDelegate`1 invokeHandler, MultiInstanceFactory factory)
   at MediatR.Internal.RequestHandlerImpl`2.Handle(IRequest`1 request, CancellationToken cancellationToken, SingleInstanceFactory singleFactory, MultiInstanceFactory multiFactory)
   at MediatR.Mediator.Send[TResponse](IRequest`1 request, CancellationToken cancellationToken)

My container configuration looks like:

this.container.Register<IMediator, Mediator>(Lifestyle.Scoped);
this.container.Register(typeof(ICancellableAsyncRequestHandler<,>), assemblies, Lifestyle.Scoped);
this.container.Register(() => new SingleInstanceFactory(this.container.GetInstance), Lifestyle.Scoped);
this.container.Register(() => new MultiInstanceFactory(this.container.GetAllInstances), Lifestyle.Scoped);

[Rookian]

This is how I did it so far:

container.RegisterCollection(typeof(IPipelineBehavior<,>), Enumerable.Empty<Type>());
container.RegisterCollection(typeof(IRequestPreProcessor<>), Enumerable.Empty<Type>());
container.RegisterCollection(typeof(IRequestPostProcessor<,>), Enumerable.Empty<Type>());

The option container.Options.ResolveUnregisteredCollections = true; is obsolete. So you really need to register those dependencies explicitly.

[rnarayana]

In the newer versions of MediatR, @Rookian 's code becomes:

container.Collection.Register(typeof(IPipelineBehavior<,>), Enumerable.Empty<Type>());
container.Collection.Register(typeof(IRequestPreProcessor<>), Enumerable.Empty<Type>());
container.Collection.Register(typeof(IRequestPostProcessor<,>), Enumerable.Empty<Type>());