Using LINQPad with Entity Framework

LINQPad lets you query Entity Framework models that you define in Visual Studio. In a nutshell, here's how to proceed:

1. Create an ADO.NET Entity Data Model in a Visual Studio project, and build.
2. From LINQPad, click Add Connection (top left)
3. Set the Data Context dropdown to Custom Entity Framework ObjectContext:
   
4. Click Browse and locate the assembly (DLL or EXE) that you built in step 1:
   
5. Choose your typed ObjectContext class and Entity Data Model:
6. Confirm the SQL Server and database details and click OK.
7. Your Conceptual Model will now show in the Schema Explorer. Right-click to start a new query:
   

A few notes:

• You can return to Visual Studio at any time and rebuild - LINQPad will not lock your assembly.
• LINQPad automatically refreshes the schema explorer and autocompletion cache whenever the assembly changes.
• If your assembly references other assemblies, LINQPad will pick up these, too, providing they live in the same folder.

http://www.linqpad.net/EntityFramework.aspx