public class Bootstrapper : BootstrapperBase
{
    private readonly ElementHost _host;
    // 以 ViewModel First Approach
    private ShellViewModel ShellVM;

    public Bootstrapper(ElementHost host) : base(false)
    {
        this._host = host;
        this.Initialize();
    }

    protected override void StartRuntime()
    {
        base.StartRuntime();

        ShellVM = IoC.Get <ShellViewModel>();
        var view = ViewLocator.LocateForModel(ShellVM, null, null);


        ViewModelBinder.Bind(ShellVM, view, null);

        var activator = ShellVM as IActivate;

        if (activator != null)
            activator.Activate();

        _host.Child = view;
    }

    protected override IEnumerable<System.Reflection.Assembly> SelectAssemblies()
    {

        return base.SelectAssemblies().Where(x => !AssemblySource.Instance.Contains(x));
    }

    public void Start()
    {
        ShellVM.Start();
    }

    public void Stop()
    {
        ShellVM.Stop();
    }
}