public static void Register(HttpConfiguration config) { // Web API configuration and services var container = new UnityContainer(); container.RegisterType <IIssueTrackerService, IssueTrackerService>(); container.RegisterType <ICategoryService, CategoryService>(); container.RegisterType <INotesService, NotesService>(); container.RegisterType <IssuetrackerContext>(new HierarchicalLifetimeManager()); var mapperConfig = PropertyMapper.InitializeAutoMapper(); var mapper = mapperConfig.CreateMapper(); container.RegisterType <IMapper, Mapper>(new InjectionConstructor(mapperConfig)); config.DependencyResolver = new UnityResolver(container); // Web API routes config.MapHttpAttributeRoutes(); config.Routes.MapHttpRoute( name: "DefaultApi", routeTemplate: "api/{controller}/{id}", defaults: new { id = RouteParameter.Optional } ); }