Feature CTP Walkthrough: Code Only for Entity Framework


The information in this post is out of date.

Visit msdn.com/data/ef for the latest information on current and past releases of EF.



This post covers a new Entity Framework extension called Code Only. Code Only allows you to use the Entity Framework using POCO entities and without an EDMX file, i.e. with ‘Code Only’. This walkthrough shows you how to use the first release of Code Only, which is a very early and limited preview of our long term plans for Code Only. To get an idea of where Code Only is heading look at this post on the EF Design Blog.

Code Only ships as part of the Microsoft Entity Framework Feature CTP 1. The CTP works on top of the latest version of the Entity Framework released as part of .NET 4.0 Beta1, and you can download it here.


  1. This walkthrough requires Visual Studio 2010 Beta 1
  2. The Microsoft Entity Framework Feature CTP1, that can be downloaded from here.
  3. A local SQL Server 2008 Express instance has to be installed as SQLEXPRESS. Otherwise, changes to the connection string in the web.config file or regenerating the database from the included SQL scripts may be necessary.
  4. Download and extract the initial solution attached to this post.

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