Winforms BindingSource?

No, it does not. Databinding is not about keeping history. You want the original values, keep them outside of your binding source and controls ;) Basic design principle - to keep the whole databinding infrastructure lean.

Because in MANY cases the history is not needed, and in the others it is best implemented in the business side, not the databinding.

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.