1.cs

    public class IoCAwareScanner : DefaultModelMetadataScanner
    {
        private readonly Action<Type, Type> registerAsTransient;
        internal static readonly Type ModelMetadataConfigurationType = typeof(IModelMetadataConfiguration);

        protected IoCAwareScanner(Action<Type, Type> registerAsTransient)
        {
            this.registerAsTransient = registerAsTransient;
        }

        public override IEnumerable<IModelMetadataConfiguration> GetConfigurations()
        {
            RegisterTypes();
            return DependencyResolver.Current.GetServices<IModelMetadataConfiguration>();
        }

        private void RegisterTypes()
        {
            IEnumerable<Assembly> referencedAssemblies = GetReferencedAssemblies();
            var configurationTypes = FilterConfigurationTypes(referencedAssemblies.SelectMany(a => a.GetLoadableTypes()));
            foreach (Type type in configurationTypes)
            {
                registerAsTransient(ModelMetadataConfigurationType, type);
            }
        }
    }

2.cs

    public abstract class IoCAwareScanner : DefaultModelMetadataScanner
    {
        internal static readonly Type ModelMetadataConfigurationType = typeof(IModelMetadataConfiguration);

        public override IEnumerable<IModelMetadataConfiguration> GetConfigurations()
        {
            RegisterTypes();
            return DependencyResolver.Current.GetServices<IModelMetadataConfiguration>();
        }

        protected abstract void RegisterAsTransient(Type implementationType, Type serviceType = null);

        private void RegisterTypes()
        {
            IEnumerable<Assembly> referencedAssemblies = GetReferencedAssemblies();
            var configurationTypes = FilterConfigurationTypes(referencedAssemblies.SelectMany(a => a.GetLoadableTypes()));
            foreach (Type type in configurationTypes)
            {
                RegisterAsTransient(ModelMetadataConfigurationType, type);
            }
        }
    }