App.config for C# Library

In case you are providing a dll which needs to make use of the entries in the app.config, they have to be added in the app.config of the final project in which your dll will be added as reference.

Say for example, your dll will be used in the TestApplication project, then the entries needed by your dll will go into the app.config of the TestApplication.

So don't worry abt the app.config attaching with the dll..