我在WPF中编写代码，其中有两个视图模型。在一个视图模型中,我正在关闭一个prism弹出窗口,在关闭时,我将调用我的发布方法,如：

private void OnCancelInteraction()
{
   _eventAggregator.GetEvent<PubSubEvent>().Publish();
   this.FinishInteraction();
}

而我的subscribe事件如下所示：

public ResidentListViewModel(IResidentService residentService, IUserService userService, IEventAggregator eventAggregator)
{
    var res =   eventAggregator.GetEvent<PubSubEvent>().Subscribe(InitializeCollectionView);
     _residentService = residentService;
     _userService = userService;
     _eventAggregator = eventAggregator;
     InitializeCollectionView();

     //***The InteractionRequest class 
     FormDialogOpenRequest = new InteractionRequest<INotification>();
     ConfirmationRequest = new InteractionRequest<IConfirmation>();

        //*** Commands for each of the buttons
     RaiseFormDialogOpenCommand = new DelegateCommand<object>(this.RaiseFormDialogOpen);
     aiseConfirmationCommand = new DelegateCommand<object>(this.RaiseConfirmation);
 }

以下是这两个类接收事件聚合器的方式：

UnityContainer container = new UnityContainer();
var aggregator = container.Resolve<EventAggregator>();
this.DataContext = new ResidentFormDialogViewModel(residentService, userService, unitService, aggregator);

这是我的第二堂课：

UnityContainer container = new UnityContainer();
var aggregator = container.Resolve<EventAggregator>();
DataContext = new ResidentListViewModel(residentService, userService, aggregator);

每次取消交互时，发布都会被发布，但ResidentListViewModel不会被调用，因为订阅。

ResidentListViewModel在具有subscribe方法的其他类之前被调用。会有问题吗？我只想在交互完成时初始化我的集合视图，而不破坏MVVM模式？如果有其他方法，请建议。