Can't access the configuration manager from my solution

Question

I have a three tier set-up. Someone suggested I should get the ConnectionString from the Web.Config file and I've got it set up like this:

Now I'm trying to access the ConnectionString from my DAL tier, but I can't find the ConfigurationManager. How can I invoke my Connection string from here?:

Answer 1

Add a reference to System.Configuration, then have a using class for System.Configuration, then you will have access to:

ConfigurationManager.ConnectionStrings

And yours can be accessed via

string s = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;