这个问题的答案可以在这个非常好的descriptive blog post中找到。
但是，我也希望答案存储在StackOverflow上：）从Google上搜索了一下才得到这个答案。下面是我的代码，它可以与一个基本的Panel一起工作。

步骤1 -创建新的区域适配器

public class PanelHostRegionAdapter : RegionAdapterBase<Panel>
{
    public PanelHostRegionAdapter(IRegionBehaviorFactory behaviorFactory)
        : base(behaviorFactory)
    {
    }

    protected override void Adapt(IRegion region, Panel regionTarget)
    {
        region.Views.CollectionChanged += (s, e) =>
               {
                   if (e.Action == NotifyCollectionChangedAction.Add)
                   {
                       foreach (FrameworkElement element in e.NewItems)
                       {
                           regionTarget.Children.Add(element);
                       }
                   }
                   else if (e.Action == NotifyCollectionChangedAction.Remove)
                   {
                       foreach (FrameworkElement CurrentElement in e.OldItems)
                           regionTarget.Children.Remove(CurrentElement);
                   }
               };
    }

    protected override IRegion CreateRegion()
    {
        return new AllActiveRegion();
    }
}

**步骤2 -更新 Bootstrap **

public class Bootstrapper : UnityBootstrapper
{
    protected override DependencyObject CreateShell()
    {
       ...
    }

    protected override IModuleCatalog GetModuleCatalog()
    {
       ...
    }

    protected override RegionAdapterMappings ConfigureRegionAdapterMappings()
    {
        RegionAdapterMappings Mappings = base.ConfigureRegionAdapterMappings();
        Mappings.RegisterMapping(typeof(Panel), Container.Resolve<PanelHostRegionAdapter>());
        return Mappings;
    }
}