use of Multiple web.config file in application.

hi,

you can have 1 web.config file per folder, so in root of your application have one web.config file and subfolder have also config file and thay overrides setting from one in the root web. config.
In short this is way to override setting in subfolder.

hope this will help you.

http://www.aspdotnet-suresh.com/2011/04/how-to-use-multiple-webconfig-files-in.html
http://www.codeproject.com/Articles/11034/Working-with-more-than-one-Web-config-file
http://www.codeproject.com/Questions/217486/Why-to-use-multiple-webconfig-files