My solution consist of three projects: 1. startup class library .net 2 project which calls external application(arcmap). 2. Entity framework protect .net 4.5 class library. 3. Project which calls entity framework, and doing a query. Also version 4.5.
I can't change the startup project to be .net 4.5.
when I try to query from the third project I get an exception that "no connection string named 'entities' could be find in application config file".
The connectionstring appears in app.config file, and works great when I use it in a single .net 4.5 project with entity framework.
I tried to put the app.config under any of my projects and under the solution but I always get this exception.
Does anyone know how can I resolve this issue?