C# detect which graphics card drives video

Question

My C# application sits on the embedded box which has Intel motherboard and graphics chipset. ATI graphics card is put on to PCI express. Generally graphics card drives the v

Answer 1

Promoted answer works only for single video card system. When I have ATI and Nvidia cards - WMI query returns ATI even if that monitor is plugged into Nvidia card, dxdiag shows Nvidia and games runs on that card (usage).

The only way I could determine right video card was using SlimDX to create DX device and examine what card it used. However that .dll weights over 3Mb.

var graphicsCardName = new Direct3D().Adapters[0].Details.Description;