I’m creating a c# application and I don’t want to hardcode a list of values because they can change over time after users have installed it on their machine. Different users may have different lists of values. For example upon installation, all users have 10 values that came with the installer. How can I make it so that some users can add/del to this list without affecting other users.

Ideally I would like this list to be in a text file on the user’s local machine so they can copy/paste or send the text file to another user.

If that can’t be done, what other option is there?