Hi, Rex...

The GridView contains a design-time property called SelectedDataKey – you can set it to a unique identifier based on the PK of the data being edited. So if it's orderID, you'd set the value of SelectedDataKey to "orderID". And then at runtime...

int nOrderID =  (int)this.MyGrid.SelectedDataKey.Values["OrderID"]; 

let me know if that helps...
Kevin