Make sure that the controller has a parameterless public constructor

Jan 28, 2015 at 12:25 PM
Edited Jan 28, 2015 at 12:26 PM
I use MEF, WebAPI in VS 2012.

I get error
__
.","exceptionMessage":"An error occurred when trying to create a controller of type 'ClienteController'. Make sure that the controller has a parameterless public constructor.","exceptionType":"System.InvalidOperationException","__

I have in Global.asax.cs:
public class WebApiApplication : System.Web.HttpApplication
{
    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();
        GlobalConfiguration.Configure(WebApiConfig.Register);
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        BundleConfig.RegisterBundles(BundleTable.Bundles);

        AggregateCatalog catalog = new AggregateCatalog();
        catalog.Catalogs.Add(new AssemblyCatalog(Assembly.GetExecutingAssembly()));
        CompositionContainer container = MEFLoader.Init(catalog.Catalogs);
        DependencyResolver.SetResolver(new MefDependencyResolver(container)); // view controllers
        GlobalConfiguration.Configuration.DependencyResolver = new MefAPIDependencyResolver(container); // web api controllers

    }

In my MEFLoader class
    public static CompositionContainer Init(ICollection<ComposablePartCatalog> catalogParts)
    {
        var catalog = new AggregateCatalog();

        catalog.Catalogs.Add(new AssemblyCatalog(typeof(BuscadorClient).Assembly));
        catalog.Catalogs.Add(new AssemblyCatalog(typeof(Core.DataRepositoryFactory).Assembly));
        catalog.Catalogs.Add(new AssemblyCatalog(typeof(Comun.DataContract.BusinessFault).Assembly));

        if (catalogParts != null)
            foreach (var part in catalogParts)
                catalog.Catalogs.Add(part);

        var container = new CompositionContainer(catalog);
        return container;
    }
Assemblies has in the bin folder of the website for the Webapi Application, in the Integration environment .

Notes:

In Development environment, dev local, sometimes failed and solution was "recompile" the WebApi App Project (csproj)

Anyways, in Integration environment failed.
Microsoft.Internal.Collections.WeakReferenceCollection1.<CleanupDeadReferences>b__0(WeakReference w)\r\n at System.Collections.Generic.List1.RemoveAll(Predicate1 match)\r\n at Microsoft.Internal.Collections.WeakReferenceCollection1.Add(T item)\r\n at System.ComponentModel.Composition.Hosting.ImportEngine.StartSatisfyingImports(PartManager partManager, AtomicComposition atomicComposition)\r\n at System.ComponentModel.Composition.Hosting.ImportEngine.TrySatisfyImports(PartManager partManager, ComposablePart part, Boolean shouldTrackImports)\r\n at System.ComponentModel.Composition.Hosting.ImportEngine.SatisfyImports(ComposablePart part)\r\n at System.ComponentModel.Composition.Hosting.CompositionServices.GetExportedValueFromComposedPart(ImportEngine engine, ComposablePart part, ExportDefinition definition)\r\n at System.ComponentModel.Composition.Hosting.CatalogExportProvider.GetExportedValue(CatalogPart part, ExportDefinition export, Boolean isSharedPart)\r\n at System.ComponentModel.Composition.Primitives.Export.get_Value()\r\n at System.ComponentModel.Composition.ReflectionModel.ImportingItem.CastSingleExportToImportType(Type type, Export export)\r\n at System.ComponentModel.Composition.ReflectionModel.ReflectionComposablePart.SetImport(ImportingItem item, Export[] exports)\r\n at System.ComponentModel.Composition.ReflectionModel.ReflectionComposablePart.SetImport(ImportDefinition definition, IEnumerable1 exports)\r\n at System.ComponentModel.Composition.Hosting.ImportEngine.PartManager.TrySetImport(ImportDefinition import, Export[] exports)\r\n at System.ComponentModel.Composition.Hosting.ImportEngine.TrySatisfyImportSubset(PartManager partManager, IEnumerable1 imports, AtomicComposition atomicComposition)\r\n at System.ComponentModel.Composition.Hosting.ImportEngine.TrySatisfyImportsStateMachine(PartManager partManager, ComposablePart part)\r\n at System.ComponentModel.Composition.Hosting.ImportEngine.TrySatisfyImports(PartManager partManager, ComposablePart part, Boolean shouldTrackImports)\r\n at System.ComponentModel.Composition.Hosting.ImportEngine.SatisfyImports(ComposablePart part)\r\n at System.ComponentModel.Composition.Hosting.CompositionServices.GetExportedValueFromComposedPart(ImportEngine engine, ComposablePart part, ExportDefinition definition)\r\n at System.ComponentModel.Composition.Hosting.CatalogExportProvider.GetExportedValue(CatalogPart part, ExportDefinition export, Boolean isSharedPart)\r\n at System.ComponentModel.Composition.Primitives.Export.get_Value()\r\n at COMPANY..Core.MefExtensions.GetExportedValueByType(CompositionContainer container, Type type) in