How to check if ini file exists with Wix Toolset

Question

I have an .ini file with configuration. I need to check if it exists in new installation to avoid creating it again. Besides if the new .ini have new fields add to the exist

Answer 1

I would suggest having 2 INI files. One that the installer owns and one that the application / user owns. The installer can always overwrite it's INI file and never worry about stomping on user data.