C# copy from windows app to mobile app

Question

So this is my first piece of software with C#.
I have the software fully functional and working as anticipated in a windows app.  When i copy my code to my mobile app though all of the events stop firing.  I even tried creating new events with the mobile app and just copying the contents of the event over.  Nothing works.
The functionality of the app revolves around tracking the enter key stroke (this is built for a HHP windows based scanner).  Right now nothing will fire the keypress event. 
 
Is there a way to force the designer to recognize the event code?  Or is it something more simplistic that i'm missing.