How to solve "The specified named connection is either not found in the configuration, not intended to be used with the EntityClient Provider, not valid.

If your EDMX file in one project, you consume it in another.
You need copy the connection string from the app.config in the project with your model to the project where you want to consume that model.


http://social.msdn.microsoft.com/Forums/en-US/adodotnetentityframework/thread/70f124b6-5003-4011-8142-9c7e4ac6c4a0/