Optimize PaintEvent on WinForms?

[Kenneth Siewers Møller]

Hi there

I have a rather annoying problem. In .NET 1.1 I could have 20 controls
(labels, textboxes etc) without any problem and the painting went
satisfying. Now in .NET 2.0 whenever I have more that about 5-10 controls on
one form, the painting is extremely slow. I use a lot of nesting with
usercontrols inside tabpages and so on, but why is it so slow compared to
1.1 and how can I make the painting faster?

I've searched the web for solutions, bu no luck... (I have read the
Microsoft article about the same subject, but that didn't help)

Sincerely Kenneth Siewers

[Frank Rizzo]

Re: Optimize PaintEvent on WinForms?

Same problem here. I've tried disabling controls, hiding, calling
interop to stop them from updating, etc... all to no avail.

I'd love to see a solution to this.

Kenneth Siewers Møller wrote:[color=blue]
> Hi there
>
> I have a rather annoying problem. In .NET 1.1 I could have 20 controls
> (labels, textboxes etc) without any problem and the painting went
> satisfying. Now in .NET 2.0 whenever I have more that about 5-10 controls on
> one form, the painting is extremely slow. I use a lot of nesting with
> usercontrols inside tabpages and so on, but why is it so slow compared to
> 1.1 and how can I make the painting faster?
>
> I've searched the web for solutions, bu no luck... (I have read the
> Microsoft article about the same subject, but that didn't help)
>
> Sincerely Kenneth Siewers
>
>[/color]

[Kenneth Siewers Møller]

Re: Optimize PaintEvent on WinForms?

It is really frustrating not to be able to create a fast and smooth running
application, just because the control painting is so slow. I thought at
first it had something to do with the new visual styles integrated in 2.0
and the transparent property available for backcolors. It seemed to make a
little difference changing containercontro ls backcolor to some solid
instead, but still... come on!

I surely hope MS is aware of this issue and are working on it as we speak.

/Kenneth

"Frank Rizzo" <frizzo@notn.co m> skrev i en meddelelse
news:Oc6pXcLTGH A.3192@TK2MSFTN GP09.phx.gbl...[color=blue]
> Same problem here. I've tried disabling controls, hiding, calling interop
> to stop them from updating, etc... all to no avail.
>
> I'd love to see a solution to this.
>
> Kenneth Siewers Møller wrote:[color=green]
>> Hi there
>>
>> I have a rather annoying problem. In .NET 1.1 I could have 20 controls
>> (labels, textboxes etc) without any problem and the painting went
>> satisfying. Now in .NET 2.0 whenever I have more that about 5-10 controls
>> on one form, the painting is extremely slow. I use a lot of nesting with
>> usercontrols inside tabpages and so on, but why is it so slow compared to
>> 1.1 and how can I make the painting faster?
>>
>> I've searched the web for solutions, bu no luck... (I have read the
>> Microsoft article about the same subject, but that didn't help)
>>
>> Sincerely Kenneth Siewers[/color][/color]

[Mark Ingram]

Re: Optimize PaintEvent on WinForms?

Kenneth Siewers Møller wrote:[color=blue]
> Hi there
>
> I have a rather annoying problem. In .NET 1.1 I could have 20 controls
> (labels, textboxes etc) without any problem and the painting went
> satisfying. Now in .NET 2.0 whenever I have more that about 5-10 controls on
> one form, the painting is extremely slow. I use a lot of nesting with
> usercontrols inside tabpages and so on, but why is it so slow compared to
> 1.1 and how can I make the painting faster?
>
> I've searched the web for solutions, bu no luck... (I have read the
> Microsoft article about the same subject, but that didn't help)
>
> Sincerely Kenneth Siewers
>
>[/color]

I've got exactly the same problem - again, would love to hear some
solutions for this. I too was under the impression it was transparency
and some anti-aliasing i'm using.