[dba-VB] VB.Net - Progress Bars

John,

I think you'd better currently use custom events as you do in VBA using
WithEvents. 

You can even do more "tricks": VB.NET (.NET Framework) generalizes this idea
of custom events and their sinking - read about the concept of delegates and
how to handle them.

If you're thinking about making your program multi-threaded then you will
have to solve some more complicated issues related to the fact that the
calls from worker threads can't in general case result in form's properties
or form controls' properties updates, IOW an event raised in a worker thread
can't/shouldn't be processed by the main thread running the form...

Here is where delegates can sole the issue or BackgroundWorker component
(http://www.codeguru.com/columns/vb/article.php/c10755/ )...


--
Shamil
 

-----Original Message-----
From: dba-vb-bounces at databaseadvisors.com
[mailto:dba-vb-bounces at databaseadvisors.com] On Behalf Of jwcolby
Sent: Saturday, May 12, 2007 5:40 PM
To: 'Access Developers discussion and problem solving';
dba-vb at databaseadvisors.com
Subject: [dba-VB] VB.Net - Progress Bars

I need two progress bars, one for displaying the files I am processing, and
one for displaying the progress processing records inside of a file.  

My question involves where to display this progress and how to feed the
individual bars.  The progress info is coming from two different classes,
neither of which is the form class.  Would I raise events and have those
events sunk clear back on the form class, or would I pass in references to
the progress controls to the classes, or would I make public variables which
hold pointers to the progress bars and allow each class to update it's own
progress bar?

How do you guys do this?

John W. Colby
Colby Consulting
www.ColbyConsulting.com

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