I assume you mean ARC?

Read the tutorial for the camera control to learn what the camera control can do.

Until you say what you are trying to achieve I am unable to offer any solutions.

i need a c# application to detect text so i thought about using the c# compiler within ARC but ARC cann't read text throught cmaera

It also doesn't have a C# compiler.

You will need to use EZ-SDK for that custom feature set.

Best of luck with your project!