[原] XAF 如何使用Top

1.代碼如下：

 public class S35430 : ViewController<ListView>
    {
        protected override void OnActivated()
        {
            base.OnActivated();
            CustomizeCollectionSource(View.CollectionSource);
            View.CollectionSource.CollectionChanged += new EventHandler(CollectionSource_CollectionChanged);
        }
        protected override void  OnDeactivated()
        {
            View.CollectionSource.CollectionChanged -= new EventHandler(CollectionSource_CollectionChanged);
              base.OnDeactivated();
        }
      
        private void CollectionSource_CollectionChanged(object sender, EventArgs e)
        {
            CustomizeCollectionSource((CollectionSourceBase)sender);
        }
        private static void CustomizeCollectionSource(CollectionSourceBase cs)
        {
            if (cs != null)
                cs.TopReturnedObjects = 5;
        }
    }