DirectX is a graphics API. Read more about it here. It can be used for graphical simulations, creating games and anything related to hardcore graphics.
Also as far as C# with directx is concerned, see this, this, this and this.
No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.
Unsolved 
Offline 
