MVVM Light - WP7页面/应用程序事件

Question

有没有办法使用MVVM Light来处理诸如Closed,Deactivated,Activated等应用程序事件？

Answer 1

感谢Matt Casto让我朝着正确的方向前进.

这是工作代码:

App.xaml.cs:

    private void Application_Activated(object sender, ActivatedEventArgs e)
    {
        Messenger.Default.Send(new NotificationMessage<AppEvents>(AppEvents.Activated, string.Empty));
    }
    private void Application_Deactivated(object sender, DeactivatedEventArgs e)
    {
        Messenger.Default.Send(new NotificationMessage<AppEvents>(AppEvents.Deactivated, string.Empty));
    }
    private void Application_Closing(object sender, ClosingEventArgs e)
    {
        Messenger.Default.Send(new NotificationMessage<AppEvents>(AppEvents.Closing, string.Empty));
    }

视图模型:

Messenger.Default.Register<NotificationMessage<AppEvents>>(this, n =>
{
    switch (n.Content)
    {
        case AppEvents.Deactivated:
            _sessionPersister.Persist(this);
            break;
        case AppEvents.Activated:
            var model = _sessionPersister.Get<TrackViewModel>();                
            break;
    }
});