如何在我的WPF shell应用程序中设置要在启动时加载的类，而不调用Application Start up方法

Question

我有Prism Shell应用程序，有一类主要关注订阅事件的执行方法。这些事件是从我的解决方案中的单独模块触发的。

我的类是 ApplicationMenuSubscriber ，它位于我的shell应用程序中。我的外壳上装有MEFBootStrapper。我可能不想直接在shell启动时连接我的ApplicationMenuSubscriber，而是希望MEF自动选择这个类。在Prism中有没有办法做到这一点

public class ApplicationMenuSubscriber
    {
        private readonly IRegionManager regionManager;
        private readonly IMenuService menuService;
        private readonly IEventAggregator events;

        [ImportingConstructor]
        public ApplicationMenuSubscriber(IRegionManager regionManager, IEventAggregator events, IMenuService menuService)
        {
            this.regionManager = regionManager;
            this.menuService = menuService;
            this.events = events;    

            //subscribe to events
            events.GetEvent<MenuEvent>().Subscribe(MenuFired);
        }

        private void MenuFired(ApplicationEventArgs obj)
        {
            //check
            if (obj.Source == MenuConstants.LOGIN)
            { 
                //log
            }
        }

    }