ASP.NET web.config: configSource vs. file attributes
file attribute Specifies a relative path to an external file that contains custom application configuration settings specific to the appSettings section will merge (and override) settings in the .config file will not cause web application to restart when modifying the specified file http://msdn.microsoft.com/en-US/library/ms228154(v=vs.100).aspx Using the Configuration.AppSettings.Settings.Add API will result in all settings being merged back … Read more