Solved: Proposals To Fix Autofac.core.registration.component Exception Not Registered

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    In some cases, your computer may display a message stating that the autofac.core.registration.component exception has not been registered. There can be several reasons for this error.

    I am trying to implement CQRS models in my mobile app. So I figured out how to register all command handlers in the assembly on this site: Autofac resolves dependency in CQRS on It commanddispatcher

    , but I can’t reach me. Here is the code:

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  •   this containerBuilder.RegisterAssemblyTypes (assembly)            .AsClosedTypesOf (type (ICommandHandler <>));        containerBuilder.RegisterAssemblyTypes (Assembly)            .AsClosedTypesOf (typeof (IQueryHandler <,>)); 

    autofac.core.registration.component not registered exception

      public class CqrsHandlerFactory: icqrshandlerfactory   n one read-only IContainer;    CqrsHandlerFactory Font (IContainer)            this.container = container;        many ICommandHandler  GetCommandHandler  (TCommand command), where TCommand: class, ICommand           Returns container.Resolve > ();        open to public IQueryHandler  GetQueryHandler  (TQuery) TQuery Location: class, IQuery            Returnable container. Solve > ();     
      public class CqrsBus: ICqrsBus    read-only ICqrsHandlerFactory cqrsHandlerFactory;    Population of CqrsBus (ICqrsHandlerFactory cqrsHandlerFactory)            this.cqrsHandlerFactory = cqrsHandlerFactory;        officially cancel ExecuteCommand (ICommand command)           var handler corresponds to cqrsHandlerFactory.GetCommandHandler (command);if (handler == null)            there is a new NotImplementedHandlerException (string.Format ("Could not find a handler for command 0" ,. GetType ()));        handler.Handle (command);        public TResult RunQuery  (IQuery query)            var handler = cqrsHandlerFactory.GetQueryHandler (request);        if (handler == null)            throw new NotImplementedHandlerException (string.Format ("Request handler 0 not found",. gettype ()));       meeting manager (TResult) .Handle (request);     

    An Autofac.Core.Registration.ComponentNotRegisteredException occurred in Autofac.dll, but it probably wasn’t in managed custom code. More information: The requested service PromocjeWsieciowkach.Messaging.Core.ICommandHandler`1 [[PromocjeWsieciowkach.Messaging.Core.ICommand, PromocjeWsieciowkach.Messaging.Core, Version = 1.0.0.0, Culture = neutral, PublicKeyToken.] Has definitely become null not registered. Avoid this exception whether you are registering a component to provide these services, whether the service registry generates the use of IsRegistered (), or uses the ResolveOptional () structure to resolve an optional dependency.

    for Autofac.ResolutionExtensions.ResolveService (IComponentContext context, service, IEnumerable parameter 1) at Autofac.ResolutionExtensions.Resolve [TService] (IComponentContext context, IEnumerable parameter 1) PromocjeWsieciowkach at.Messaging.Factories.CqrsHandlerFactory.GetCommandHandler [TCommand] (TCommand command) here at C: Users Daniel Desktop PromocjeWsieciowkach src PromocjeWsieciowkach.Messaging Factory 17. cs: PromocjeWsieciowkach.Messaging.Bus.CqrsBus.ExecuteCommand (ICommand command) at line C: Users Daniel Desktop PromocjeWsieciowkach src PromocjeWsieciowkach.Messaging Bus CqrsBus.17 cs: line in PromocjeWsieciowkach.Controllers.PostController.Index () in C: Users Daniel Desktop PromocjeWsieciowkach src PromocjeWsieciowkach Controllers PostController.cs: line 20 in lambda_method (enclosing object, Object, []) from Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.d__28.MoveNext ()

    I have exactly the same problem downloading the source code from the website. Compiled, new database installed, started, then throws exceptions.

    Exception thrown: 'System.ArgumentException' using System.Private.CoreLib.dll ("You must specify 'AppId'.")
    The AppId parameter must be specified.

    Exception thrown: 'Autofac.Core.Registration.ComponentNotRegisteredException' in Autofac.dll ("The requested service 'Nop.Plugin.Widgets.GoogleAnalytics.GoogleAnalyticsPlugin' is not registered yet. Avoid this exception, register both If you have there is a component for deployment Where the service is currently located, check if IsRegistered () is used to register the service, or use the ResolveOptional () alternative to resolve an optional dependency. ")
    The expected service "Nop.Plugin.Widgets.GoogleAnalytics.GoogleAnalyticsPlugin" was not professional. To avoid this exception, remove the provider provisioning component, verify the service registration with IsRegistered (), or use the ResolveOptional () method to resolve an optional dependency.

    autofac.core.registration.component not registered exception

    Exception thrown: 'Autofac.Core.Registration.ComponentNotRegisteredException' next to Autofac.dll ("The requested service plans 'Nop.Plugin.Widgets.NivoSlider.NivoSliderPlugin' are not registered. Avoid if required, or register the core to provide the service, verify with IsRegistered () the registration of the service, or use the ResolveOptional () method to resolve a specific optional dependency. ")
    The requested service 'Nop.Plugin.Widgets.NivoSlider.NivoSliderPlugin' is not registered. Avoid excluding the item, register the component so you can provide the service, check the registration online Web systems using IsRegistered () or use our own ResolveOptional () method to resolve another dependency.

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