grasping the data grid

Bernard Devlin bdrunrev at gmail.com
Tue Mar 31 11:29:03 EDT 2009


Hi Eric

I was going to paste the URL here, when I noticed it says "offers" as
part of the URL, so maybe it is only supposed to be available to
people on some mailing list.  If you didn't receive the email from
runrev advertising announcing it, maybe it was only sent out to those
of us who didn't view the original live webinar.

Hopefully Heather will pop up and say if it is for general release.

BTW, I had to use wget to download it.  I tried to view it loading the
link into Safari, and it just seemed to hang.  Maybe something to do
with it being a .wmv file and so QT had to download it all before it
could display anything.

Bernard

On Tue, Mar 31, 2009 at 1:42 PM, Éric Miclo <eric.miclo at wanadoo.fr> wrote:
> Hello,
>
> I didn't have the chance to watch at the webinar session (only the latest
> minutes).
> Does somebody know if it can be watched or downloaded somewhere?
>
> Best,
>
> ÉrIC
>
> Le 31 mars 09 à 11:07, Bernard Devlin a écrit :
>
>>
>> Hi,
>>
>> I just watched the webinar session.  Thanks to the folks who went to
>> the trouble of organizing it and putting it online.  I think it might
>> be a very important element to consider when getting to grips with the
>> data grid.
>>
>> Before I watched the webinar I played with the data grid for a while.
>> I didn't really grasp how to use column or row templates, even after
>> reading Trevor's documentation.  However, watching the webinar brought
>> that home to me.
>>
>> Following Trevor's mention that he'd used the data grid with 50,000
>> rows from sqlite, I put 100,000 rows into a data grid.  It still
>> sorted remarkably quickly - maybe 2 seconds to sort by a column and
>> display it.  I'm assuming from his mention of optimization, that the
>> data grid is really just a window onto a list, but if so, it appears
>> seamless to me.  I also noted in the webinar that he mentions that the
>> grid's display can be hooked up to a result set cursor, and the
>> display of the 50,000 records was even faster.
>>
>> I saw mention by Bill that the DG was implemented as a scripted group
>> and that it was pretty amazing.  I was not disappointed - it's very
>> impressive work. I would never have thought that controls could be
>> grouped to produce something as complex as the data grid.  ListMagic
>> seems simpler to use, but is also less powerful.
>>
>> Bernard.
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>
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>
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