[development-axapta] multi datasource grid -- access linked table in a menuItemButton class

[ramankt2001]

We are still on Axatpata 3.0.

I've a grid with an inner join between InventItemGroup and InventTable. I'm 
accessing the grid contents in a class that is connected to the form through a 
menuItemButton.

I'm able to access the InventItemGroup table using the commands common = 
fds.getFirst(true) and common = fds.getNext().

Can I access the contents of InventTable from the fds? Bottom line, I want to 
be able to access all the columns in my grid. Is it possible?

Thanks.