I maintain some projects that use .NET framework. These projects use TFVC for version control.

I have two branches for each project, production and development. Every time something like an entity model or a web service is added, the app.config or web.config file changes.

My current approach is to manually edit the .config file in the production branch after merging. Is there a more automated approach?
I also have code that needs to change based on the database. For example, code containing role IDs. I currently manually edit the code file after merging. Can this be automated?