Cross-thread operation not valid: Control accessed from a thread other than the thread it was created on?

EDIT As per SilverHorse's update comment the solution you want then should look like.

You only want to use Invoke or BeginInvoke for the bare minimum piece of work required to change the UI. Your "heavy" method should execute on another thread (e.g. Via BackgroundWorker) but then using Control. Invoke/Control.

BeginInvoke just to update the UI. That way your UI thread will be free to handle UI events etc.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.