Using .gitignore file to hide appsettings.json does not actually hide it

Question

I have a C# MVC .Net Core application I'm building, the connection string is in a file called appsettings.json so what I want to do is simply exclude this from my git repository. I have added the following line to the git ignore file:

appsettings.json

I have also tried:

**/appsettings.json

But neither seem to work, the change I've made to the appsettings.json file still appears, am I missing something fundamental here?

Answer 1

This is a common misunderstanding about the way .gitignore works we all met at some point when working with Git: .gitignore will ignore all files that are not being tracked yet; indeed, files that are already being tracked in your Git repository are not ignored by your .gitignore setup.

To fulfil your need, it would be sufficient to untrack the files that you desire to ignore, i.e. in your case the appsettings.json file. As reported in your question's comments, this has been answered already here. Then, your .gitignore setup will work as you would expect.