>Hello fellow programmers around the world.
>
>I'm designing an invoicing application, (this is about my 6th, one) I have always had doubts as to how to handle the totaling of the child records (detail) for an invoice.
>
>Could someone give me any ideas on what would be the best way to get the total for an invoice?
>
>Some methods I have used before are: sum, scan, memory variables and so on, but somehow I believe that there has to be a fast and elegant way of doing this.

Alfred,
you can use whatever to get the initial sum (if you are editing an old record)
and then update the sum when you make chages in the grid (again there are several ways to do that)

Arnon