Jeff,

>I have a Purchase Order form. POs table with POsItems as a child in a datagridview. When a change is made to the POsItems, I calculate the new subtotal and update the business object and it is displayed in the bound control. Everything works fine. After I edit the discount field control (also a bound control in the POs table), it seems the link between the control and the business object is broken. When I update the business object, the change is not reflected in the bound control. I thought I was doing it backwards, so I tried updating the control, but the business object does not update.
>
>Upon further investigation, it seems that if I make a change to any of the POs business object bound controls, changing the business object data is no longer reflected in the bound control.

I recommend setting a breakpoint in the bound control's StateChangeHandler() method to see if it ever receives notification. If so, you can step through and see what's happening.

Best Regards,