Data Access using Entity framework in Windows Service

Question

I want to create a windows service with Data Access using Entity Framework - Code first approach. Data Access should be in separate project but same solution. In DbContext file MyContext.cs  this code line is throwing error.

public MyContext()

: base("MydbConn")

The type initializer for 'System.Data.Entity.Internal.AppConfig' threw an exception. >> Configuration system failed to initialize .

May be because, Data Access project is not able to access connection string in App.Config file.