Parms from WebApp to Class Library

[Nate Bross]

I have two applications. A class library (data access, etc) and a Web Application (GUI, basic user input checking, etc). My question is what is the best way to pass parms to the class library? For example, I have a function that reads a Db/2 database and returns a record set, at the moment the connection string is hard coded; however, in production it will be dynamic. Should I pass the connection string as a paramater to the function, or use my own XML file?

I want to edit the parms without recompiling.

WebApp -> Reads Web.Config parm -> Passes parm to Class Library

or

WebApp -> Calls Class Library -> Class Library reads it's own config file for the Parm