I'm a newbie into the .net world. I have a webservice that accepts a userid and password, I check this against a sql server database for authentication and to get the proper dbconnectionstring for their particular website. This webservice basically packages orders up into an xml document and passes this back to the POS system (written in VFP).

Anyway, Each retailer sets up their own encryption key in their appropriate web.config file for encrypting credit card info. Is there a way in my webservice to inform the System.Configuration.ConfigurationSettings.AppSettings which directory to find the appropriate web.config file so that I can decrypt the credit card info?

I hope I'm explaining myself well.

Thanks,
Paul