Get assembly sub objects collection on C#

[mbongiovanni]

Hi everybody,

I am trying to get control over the objects of a DWF file using C# and, to be more precise, I'd like to hide/show them at runtime.

Giving you a quick code snippet, I do 

[...]

ECompositeViewer.IAdSection sec = (ECompositeViewer.IAdSection)CompositeViewer.Section;
ECompositeViewer.IAdContent con = (ECompositeViewer.IAdContent)sec.Content;

AdCommon.IAdCollection adobj = (AdCommon.IAdCollection)con.get_Objects(0); //all objects ???

[...loop over adobj...]

Now, the problem is that get_Objects(0) gives me only, let me say, first level objects, non all those nested into. For further clarification I attach this image:

When I loop for object I can see only Arbor_Press, the whole assembly. How can I get into it to handle Arbor_Frame, Face Plate, ecc.? It looks trivial to me but I can't get rid of it!!!

Thank you in advance.

Michele.

PS Please redirect me anywhere if the topics has already been discussed. I've searched for it without success.