@jperalta
even with GDI you can remove flickering. The technique is exactly like the one used by DirectDraw, use a secondary buffer.

@pimple
Flickers occur when the screen is updated before your game finishes its drawing. For example, your game is supposed to draw 100 bombs, but on the 10th bombs, for example, the screen refreshes. So, for x miliseconds you see 10 bombs, for the next x miliseconds you see 40 bombs, for the next next x miliseconds you see 100 bombs. This results in flickering. Especially that you use labels, everytime you update the contents of a label, C# will update the screen.

To remove it, you need to have a secondary buffer which is not displayed on the screen, but you can treat it as the monitor screen (it''s sometimes called Offscreen surface or Backbuffer). What you basically do is to draw everything on the secondary buffer, after everything is drawn, you update the screen by copying everything on the secondary buffer to the screen. See, the process of updating only occurs once, instead of 100 times.

teh so-called .NET Framework?