[dba-VB] VB.Net - DoEvents

Boy, do I hear that, John!  Most of the books are not very helpful in
learning .Net for exactly the reasons you give.  It was a big help to me
to have worked extensively with ADO and to have done a lot of unbound
stuff, so I didn't have to rely on binding and object to a data source
before starting to work with it.  

Charlotte

-----Original Message-----
From: dba-vb-bounces at databaseadvisors.com
[mailto:dba-vb-bounces at databaseadvisors.com] On Behalf Of jwcolby
Sent: Friday, July 13, 2007 6:11 AM
To: dba-vb at databaseadvisors.com
Subject: Re: [dba-VB] VB.Net - DoEvents

Shamil,

I am definitely looking at wrapping these processes in worker threads
but I need to get the code working first.  It turns out that if I run
the code full speed, the objects on the form do update, it is just when
I step through code that they do not.  I really don't understand why not
at this point.  I am using events raised in my class to pass status info
to event sinks on the form and it is all working, event sinking status
events from the SQLBulkCopy class and bubbling them up to the form.

I continue to be amazed at how quickly you can do things in .Net IF you
already know .Net and how large the learning curve is.  It is actually
quite easy to do little things even with no knowledge, it is just that I
do not think in "little things", I think in high level operations (top
down kinda
sorta) and I do not understand all of the syntax required to put the big
pieces into place.  I know VBA and DAO like the back of my hand.  I am
used to just "whacking out code" and that ain't happening in VB.Net,
which is frustrating.  

One of my BIG BIG issues is my almost total lack of understanding of
ADO, made worse by the fact that .NET ADO is even more different.  Much
of what I currently need .Net for is data manipulation, NOT human data
entry / display.  Reading / writing tables > files and vv.  And of
course most of the books concentrate on human data entry / display with
very little time spent on how to do things directly in code.  It all
seems to be "drag this object out, set this property, bind it to this
control", which is just useless to me right now.  I need to create those
objects in code, in the correct order, set the properties in code, use
the results in code.  After hundreds of hours of hacking away I have yet
to bind an object to data, though I am finally beginning to need that
for my own human interface to these projects.

Once I get .NET ADO nailed I think things will start falling into place.
In the meantime... Waaaaaaaaaa!

John W. Colby
Colby Consulting
www.ColbyConsulting.com
-----Original Message-----
From: dba-vb-bounces at databaseadvisors.com
[mailto:dba-vb-bounces at databaseadvisors.com] On Behalf Of Shamil
Salakhetdinov
Sent: Friday, July 13, 2007 8:48 AM
To: dba-vb at databaseadvisors.com
Subject: Re: [dba-VB] VB.Net - DoEvents

Hello John,

I think this information could help you to solve your task:

http://fernandof.wordpress.com/2007/04/04/implementing-multi-threading-i
n-wi
nforms-using-the-backgroundworker-class/

http://www.knowdotnet.com/articles/backgroundworker.html


--
Shamil
 
-----Original Message-----
From: dba-vb-bounces at databaseadvisors.com
[mailto:dba-vb-bounces at databaseadvisors.com] On Behalf Of jwcolby
Sent: Friday, July 13, 2007 2:28 AM
To: dba-vb at databaseadvisors.com
Subject: [dba-VB] VB.Net - DoEvents

I am running a process with a form which sinks events form a class and
updates controls on the form in those events.  I put DoEvents as the
last line in the event sinks but the form is not refreshing, at least
not while stepping through the code.  Is there something else I need to
do to cause the form to refresh?

John W. Colby
Colby Consulting
www.ColbyConsulting.com 


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