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

Your question isn't entirely clear, so I'm not sure if the follwing idea will help or not.

Perhaps something very simple would suffice:

If the two graphics cards run different resolutions check the monitor resolution using:

System.Windows.Forms.SystemInformation.PrimaryMonitorSize

Similarly, if one card supports more than one monitor, check the number of monitors using SystemInformation.MonitorCount.