Faster repaint

[Víctor]

Hello, I'm doing a Intranet application which shows some information panels
dinamically. Each panel is a dll loaded dinamically using Reflection and
inherits from Panel class. To display information, I use controls inheriteds
from ListView with updated styles
(this.SetStyle( ControlStyles.C ontainerControl | ControlStyles.R esizeRedraw |
ControlStyles.A llPaintingInWmP aint | ControlStyles.D oubleBuffer |
ControlStyles.U serPaint | ControlStyles.S upportsTranspar entBackColor,tr ue);
) to make it transparent and view intranet background (corporative image).
Each time that user select a item, listview is invalidated to redraw its
content. At OnEvent method, I repaint each element drawing a rectangle
around selected item, and setting their FontStyle to Bold. FontStyle to the
rest of element is Regular. Also, I added a collection of images to add high
resolution images (png) with transparency level to each ListViewItem which
also are drawn when control is repainted.

The problem of that solution is execution slowness due to continuous
repaintings and image and text positioning calculations. I need a
alternative solution, because some machines which will execute intranet are
a bit slow and haven't very good graphical configuration, but I've been
searching a faster solution and I haven't found. Could you help me, please?

Thanks.
Víctor.