MEF and WEB API 2.2 - mef

Question

I am trying to inject dependencies into a Web Api Controller.
I created an own IHttpControllerActivator class and replaced the default one in lobalConfiguration.
public class SimpleASPWebAPIContainer : IHttpControllerActivator
{
private readonly CompositionContainer container;
public SimpleASPWebAPIContainer(CompositionContainer compositionContainer)
{
container = compositionContainer;
}
public IHttpController Create(System.Net.Http.HttpRequestMessage request, System.Web.Http.Controllers.HttpControllerDescriptor controllerDescriptor, Type controllerType)
{
if (controllerType != null)
{
var export = container.GetExports(controllerType, null, null).FirstOrDefault();
IHttpController result = null;
if (null != export)
{
result = export.Value as IHttpController;
}
else
{
//result = base.GetControllerInstance(requestContext, controllerType);
//container.ComposeParts(result);
}
return result;
}
else
{
return null;
}
}
public void Dispose()
{
if (container != null)
container.Dispose();
}
}
var apiSimpleContainer = new SimpleASPWebAPIContainer(container);
System.Web.Http.GlobalConfiguration.Configuration.Services.Replace(typeof(IHttpControllerActivator), apiSimpleContainer);
But when the client app is calling a controller method the IHttpControllerActivation Create method is not invoked.
Anybody can help me?

Answer 1

It was a very silly mistake.
public void Configuration(IAppBuilder app)
{
HttpConfiguration config = new HttpConfiguration();
ConfigureOAuth(app);
MefConfig.RegisterMef(config);
WebApiConfig.Register(config);
app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);
app.UseWebApi(config);
AutoMapperConfig.InitAutoMapper();
}
I should have to used the new HttoConfiguration instance to replace default IHttpControllerActivator instead of System.Web.Http.GlobalConfiguration.Configuration.