Yes, you can interate through the buffer using all the BufferXXXX methods
and properties. This has been touched on heavily in the archives.

As for your other issues of keeping a running total in a grid, I don't know
what to suggest. It sounds to me like a very awkward element in your user
interface design. It might benefit us all if you gave us a view of your
project from a little higher up and perhaps we can give you other ideas to
try. Something bothers me about what I am hearing so far.

Jason Wharton

> -----Original Message-----
> From: IBObjects@yahoogroups.com [mailto:IBObjects@yahoogroups.com]On
> Behalf Of Eyal
> Sent: Wednesday, April 27, 2005 5:02 PM
> To: IBObjects@yahoogroups.com
> Subject: Re: [IBO] BufferFieldByName & Co.
>
>
>
>
> Jason Wharton wrote:
>
> >> 3. If not, is there any other way to make the update pass
> >> through to the dataset (so data aware controls will see it),
> >> but still without triggering a server update?
> >
> > Please clarify what you mean here. I'm not clear on what
> > benefit you are looking for.
>
> Jason -
>
> Thanks and you're right that it's better if I explain what I'm trying
> to achieve rather than shoot (questions) in the dark.
>
> Here is the main problem:
>
> I need to display a running total in a grid. So far I couldn't find
> any way to read the rows into a dataset, then calculate the running
> total and store it in a field that, so the grid can display the
> running total column like any other column.
>
> I thought that the buffer methods can serve as a back door to change
> the dataset without triggering the overhead of dataset validations
> and/or server SQL.
>
> A lesser problem:
>
> I need to let the user select rows in the grid and display some
> statistics for the selected rows (the stats are "live" as the user
> selects and de-selects rows). So I try something like this:
> - DisableControls.
> - Save the current active row.
> - Iterate the active row over the selected (bookmarked) rows.
> - Restore the active row.
> - EnableControls.
>
> However the grid that I use (EhLib) detects the change of the active
> row and re-adjusts the grid so the active row is in the center. This
> is very distrubing visually.
>
> I hoped that the buffer methods can access the selected rows without
> disturbing the "official" active row of the dataset, and so I can
> avoid the visual disturbance.
>
> Any ideas?
>
> Thanks,
>
> Eyal.