i have two project 1) class library with no inteface just an api 2) web application
from web apps i will be calling the class library api
so i have all the web
just saw the post and i had same problem but i got a way.. add System.Web.Configuration reference to your class library prj then
System.Web.Configuration
ConnectingString = WebConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
Hope this will help