ExpandoObject对象的绑定问题

1 protected new object Eval(string expression)
2         {
3             object obj = this.Page.GetDataItem();
4             IDictionary<string, object> items = obj as IDictionary<string, object>;
5             if(items != null)
6                 return items[expression];
7             else
8                 return DataBinder.Eval(this.Page.GetDataItem(), expression);   
9         }