How to fix nested winform control flicker issues

Question

I am currently working on a program that uses a fairly complex structure of nested winform controls which changes dynamically as a user makes certain selections. To go into more

Answer 1

If you are using WinForms 2+ then you can just set the 'Control.DoubleBuffer' property on the control to true (in the designer even).

With framework 2, setting DoubleBuffered sets the 3 flags : OptimizedDoubleBuffer, AllPaintingInWmPaint, and and another that I forgot, 'UserPaint' perhaps.

Also, do look at the BeginUpdate/EndUpdate as mentioned by @yetapb.