I googled this before posting hoping I'd find an answer and not have to embarass myself. I can't find what app.config is for, so I don't know if what I'm thinking about using it for makes sense.

I run a query against a database and get back a list of companies which I put in a dropdownlist for a user to select. Some of these companies shouldn't be in the list anymore. We have determined that the database shouldn't be changed (e.g. adding an active column) so I am going to load the ddl the way I always have then read a file of companies to remove from the ddl. I am doing something similar in a VB6 program and in .NET I was going to read a text file, but I didn't know if this is something I should put in app.config. Would that be a correct use of it? Or should I use some other xml file instead of a text file?

Thanks.