Thomas
On the page with the customer datagrid:
- Add a dataview
- Use Listen To as a data source
- Select the customer datagrid as the listen target
- Inside of the dataview, place a datagrid
- The nested datagrid can retrieve orders via the association between customer and orders
- Place an edit or action button in the control bar of the orders datagrid and mark it as default
- This will enable you to edit orders when you click or double click on a row in the orders datagrid, depending how your datagrid is configured
With this structure, when you select a customer in the first datagrid, you'll see all of their orders listed in the second datagrid.
Hope that helps,
Mike