How to handle TC 20 device key events programmatically.

Hi Good Day,

I just want to know how to handle TC 20 Device key such as in the  yellow right trigger of scanning (TC20)  to become my sending phase  of data in my program and the yellow left trigger to be my scanning process. Im using C# language , Xamarin Android and Data wedge for scanning , not EMDK .  Thanks for your help.

Thanks ,

Raven I. Supilanas

Sm Retail Inc.