Refactoring_to_improve_maintainability_and_blendability_using_IoC_part_1_07.cs

private void InitApplicationHost()
{
    var container = ApplicationHost.Current.Container;

    db = new Database();

    container.Register<IEventAggregator>(new EventAggregator());
    container.Register<IDatabase>(db);

    container.Register<MainViewModel>(c => new MainViewModel(
        c.Resolve<IEventAggregator>(),
        c.Resolve<IDatabase>()));

    container.Register<BrowserViewModel>(c => new BrowserViewModel());

    container.Register<SettingsViewModel>(c => new SettingsViewModel(
        c.Resolve<IDatabase>()));

    container.Register<NavigationManager>(c => new NavigationManager(
        c.Resolve<IEventAggregator>()));
}