Access to DataSource objects from NSTableView

FROM : David Alter
DATE : Fri Jul 21 19:26:03 2006

I think this is a real basic question and I'm just missing something. 
Or maybe I just not using the classes correctly.

I'm using CoreData as a data source for a NSTableView. I have been 
able to connect them using bindings. I created a Controller class in 
IB and was able to bind my interface to my data very nicely. Now I 
have a situation where I want to do an operation on my sub class of 
NSManagedObject based off the selected rows. I have not identified a 
simple way to get to  my sub class of NSManagedObject for a selected 
row in NSTableView.  Should I not be approaching the problem this way?

Thanks you so much for the help.

enjoy
-dave