I want to create a custom BE that is populated from an SP that returns multiple result sets. Then use an ObjectDataSource to populate my web form gridview.

Example: The BE is a league that has a collection of teams. Each team also has a collection of games and a collection practices.

The SP is easy. Populating the BE is easy. The ObjectDataSource is the pain.

I've tried creating a DS for each collection but each DS instantiates a separate copy of the BE.

Please note: I am not talking about MARS.