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]

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]

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 containercontrols 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

 

[Mark Ingram]

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

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.