DefaultControllerActivator

DefaultControllerActivator.cs

private class DefaultControllerActivator : IControllerActivator
{
    private Func<IDependencyResolver> _resolverThunk;

    public DefaultControllerActivator()
        : this(null)
    {
    }

    public DefaultControllerActivator(IDependencyResolver resolver)
    {
        if (resolver == null)
        {
            _resolverThunk = () => DependencyResolver.Current;
        }
        else
        {
            _resolverThunk = () => resolver;
        }
    }

    public IController Create(RequestContext requestContext, Type controllerType)
    {
        try
        {
            return (IController)(_resolverThunk().GetService(controllerType) ?? Activator.CreateInstance(controllerType));
        }
        catch (Exception ex)
        {
            throw new InvalidOperationException(
                String.Format(
                    CultureInfo.CurrentCulture,
                    MvcResources.DefaultControllerFactory_ErrorCreatingController,
                    controllerType),
                ex);
        }
    }
}