学步园

使用全局的EventManager的RegisterClassHandler函数，如：

public partial class App : Application
    {
        protected void MyLoaded(object source, RoutedEventArgs e)
        {
            object s = e.Source;

        }
        protected override void OnStartup(StartupEventArgs e)
        {
            base.OnStartup(e);
            EventManager.RegisterClassHandler(typeof(Window), Window.LoadedEvent, new RoutedEventHandler(MyLoaded), true);
        }
    }
}