.net - Which file is System.Configuration.ConfigurationManager.AppSettings using? -

I want to know that the configuration manager is using the * .config file. For example, you can make changes in working directories and execute libraries through various routes. I have a way of displaying something like "app settings" from "c: \ MyApp \ app.config" in my trace ".

  system.config configuration manager.openax configuration (ConfigurationSpeakNumber) .FilePath