Question

Problem: Can’t properly setup LINQPad connection to my Entity Framework dll.

1. I downloaded LINQPad (v4.42.01)
2. I started to create a new connection using the Entity Framework DbContext POCO driver
3. At the setup dialog I pointed to my C# project’s dll and it found the appropriate DbContext class.
4. Next I pointed the config file to the app.config of my C# project
5. When I hit the Test Button I get this error:

Error: The type initializer for
‘System.Data.Entity.Internal.AppConfig’ thre an exception. An error
occurred creating the configuration section handler for
entityFramework: Could not load file or assembly ‘EntityFramework,
Version=4.3.1.0, Culture=neutral, PublicKeyToken=b77a5c561934e089’ on
one of its dependencies. The system cannot find the file specified.
(C:\Code\NET\FTI_Opp_Model\App.Config line 5)

So I tried doing what @Sorax did in this related question and moved my EntityFramework.dll from the one I got from NuGet in my project into the LINQPad.exe folder. This got me a little further along and the Test now worked. I was encouraged because my connection in the LINQPad panel showed all my entities underneath it.

But when I right click on my Borrower entity and chose “Borrower.Take(100)” I received this error from LINQPad:

The type initializer for ‘System.Data.Entity.Internal.AppConfig’ threw an exception.

With an inner exception message:

[A]System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection cannot be cast to
[B]System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection. Type
A originates from ‘EntityFramework, Version=4.3.1.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089’ in the context ‘Default’ at location
‘C:\MarkSisson\LinqPad\EntityFramework.dll’. Type B originates from
‘EntityFramework, Version=4.3.1.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089’ in the context ‘LoadFrom’ at location
‘C:\Users\msisson\AppData\Local\Temp\LINQPad\vlnebssu\shadow_ujjvzp\EntityFramework.dll’.

Any ideas?

Answer 1

Download the latest beta – this problem was fixed in 4.42.05.