Registry change upon installing application C#

Question

Just about to try and make an install package for an app for that first time with visual studio. I have a registry value that needs to be changed when the program is installed I

Answer 1

I have same problem, I'm using WIX and follow the answer from this Stackoverflow question. I'm also new on WIX, here's my full WIX working script if you might interest (tested on Windows XP & Windows 8.1):