Form Load

[news.microsoft.com]

Is there any way to preload a form in VB.NET of how can I avoid seeing when
a form is loading, how it is painting all the controls it contains?

I think in VB6 I could use Load(frmTest) and after it is loaded, show it.

Thanks

 

[Chris, Master of All Things Insignificant]

Sub SomeSub()
Dim F as New Form1 <--Loading in memory now
F.ShowDialog <--Now showing the hidden form
End sub

Chris

 

[TCORDON]

Is there some way to avoid watching the form paint all the controls it
contains?

Thanks

 

[Chris, Master of All Things Insignificant]

It has to paint the controls. Is it taking a long time to paint? What is
the problem you are seeing? Are you doing a lot of databinding?

Chris

 

[TCORDON]

No databindig yet, the thing I dont like is that the form loads and I can
see gray boxes where the controls should go, and THEN i see the controls.

Just doesn´t look ok.

Thanks

 

[Chris, Master of All Things Insignificant]

I've never seen that. What is your system specs?

Chris

 

[Herfried K. Wagner [MVP]]

Dim F as New Form1 <--Loading in memory now
F.ShowDialog <--Now showing the hidden form

Mhm... I don't know of another way to show a form without instantiating it
first ;-))).

 

[Martin Williams]

I'm running into the same problem, which is how I found this thread. I'm
developing a survey program that has a parent mainform with five child
forms. Even after the program has been running for a few minutes, I still
see the forms drawing themselves. And, I have them coded using the
technique below. I'm running a 2.0 Ghz Celeron, Windows 2000 Professional
machine with 512MB memory.

 

[Cor Ligthert]

Hi,

What is the place that you show the form.

The load event is the place where everything can be done before the form is
showed to the screen, however than you should not show it in advance.

I hope this helps

Cor

 

[Martin Williams]

On my main form, I have a menu with a Start Survey option.

Private menuStart_click(...)
dim frmDisclaimer as new form 1
frmDisclaimer.MDIParent = me
frmDisclaimer.Show
me.close
End Sub

However, I still see it "drawing" the controls. I'm thinking of using a
module as startup and having all the forms declared and loaded into memory,
and show them as I need them. Do you think that would improve performance?

 

[TCORDON]

That´s exactly the problem I have, and i see it in my computer with P4 3.0
Ghz, 1.5 GB RAM.

So I wonder how will it look on slower computers.

Regards,

 

[Martin Williams]

Well, I managed to see a significant increase in performance simply my using
a module as the startup object, and loading all forms into memory, then
showing them as I need them.