web.config file location when using a network share

[john smith]

How can I determine the location of the web.config file, especially when the
web application might be using a network share?

This code is not correct in that situation:

AppDomain.CurrentDomain.SetupInformation.ConfigurationFile

because I get c:\winnt\system32\<SHARECOMPUTER>\<SHAREDIR>\web.config

Any help appreciated.