Allow Name Registration Using Unity 2 in DefaultControllerFactory

Question

I have a problem with resolving registered registrations of registered types in Unity 2 using ASP.NET MVC 3 with the DI set to DefaultControllerFactory.

In one build, I defined a Unity container with registration types and named registrations

public class VisUnityContainer : UnityContainer
{
    public IUnityContainer RegisterVisComponents()
    {
         // register types
         this               
             .RegisterType<ICompanyService, CompanyService>()
             .RegisterType<ICompanyService, TestCompanyService>( "2" );
    }
}

and in my MVC project, I inherited DefaultControllerFactory. I resolve types and pass VisUnityContainer

public class UnityControllerFactory : DefaultControllerFactory
{
    private readonly IUnityContainer unityContainer;

    public UnityControllerFactory( IUnityContainer unityContainer )
    {
        // set contracts
        if( unityContainer == null )
            throw new ArgumentNullException( null, "Unity container is not initialized." );

        // set associations
        this.unityContainer = unityContainer;
    }

    protected override IController GetControllerInstance( RequestContext requestContext, Type controllerType )
    {
        // set contracts
        if( controllerType == null )
            throw new HttpException( 404, String.Format(  "The controller for path '{0}' could not be found or it does not implement IController.",
                     requestContext.HttpContext.Request.Path ) );
        if( !typeof( IController ).IsAssignableFrom( controllerType ) )
            throw new ArgumentException( String.Format( "Type requested is not a controller: {0}", controllerType.Name ) );

        // action result
        IController controller;

        // company law
        string companyLaw = String.Empty;

        // set user properties
        if( Thread.CurrentPrincipal != null &&
            Thread.CurrentPrincipal.Identity.Name != null &&
            !String.IsNullOrWhiteSpace( Thread.CurrentPrincipal.Identity.Name ) )
        {
            // set culture for law of companies region
            CultureInfo cultureInfo = new CultureInfo( Profile.GetCurrent().CompanyState );

            // set language
            CultureInfo uiCultureInfo = new CultureInfo( Profile.GetCurrent().UserLanguage );

            // set dates etc.
            Thread.CurrentThread.CurrentCulture = cultureInfo;

            // get proper resource file
            Thread.CurrentThread.CurrentUICulture = uiCultureInfo;

            // set company law
            companyLaw = Profile.GetCurrent().CompanyLaw;
        }

        try
        {
            // resolve container
            controller = this.unityContainer.Resolve( controllerType, companyLaw ) as IController;
        }
        catch( Exception )
        {
            // throw exception
            throw new InvalidOperationException( String.Format( "Error resolving controller {0}", controllerType.Name ) );
        }

        // action end
        return controller;

    }
}

The problem is the line

controller = this.unityContainer.Resolve( controllerType, companyLaw ) as IController;

As long as companyLaw is 2, it does not allow the named registration of TestCompanyService, but always CompanyService. If I also installed CompanyService with some named registration, it throws an error stating that it cannot resolve the type.

Also, if I try to manually decide the type of type

var test = this.unityContainer.Resolve<ICompanyService>( companyLaw );

It returns the correct type.

- , ?

Answer 1

Container.Resolve(type,string)

Container.Resolve<T>(string)

.

Resolve (string) - , Container.Resolve(type, string).

, "controllerType" ? "controllerType" - (CompanyService), (ICompanyService), CompanyService. ,

Resolve(controllerType,"2")

:

container.Resolve(typeof(CompanyService),"2");

.

, , :

container.Resolve<ICompanyService>("2");

, :

, , Unity. .