public class AutofacConfiguration
    {
        private static ContainerBuilder builder;
        public static void ConfigureContainer()
        {
            builder = new ContainerBuilder();
            builder.RegisterControllers(typeof(MvcApplication).Assembly);
            builder.RegisterAssemblyModules(typeof(MvcApplication).Assembly);
            RegisterTypes();
            var container = builder.Build();
            DependencyResolver.SetResolver(new AutofacDependencyResolver(container));
        }

        private static void RegisterTypes()
        {
            builder.RegisterType<TaskRepository>().As<ITaskRepository>();
        }
    }