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    <p>Starting from Entity Framework 4 (with Visual Studio 2010), the generated code is outputted from T4 (Text Template Transformation Toolkit) files which you can edit so you have full control over what is generated. See <a href="http://www.olegsych.com/2007/12/text-template-transformation-toolkit/" rel="nofollow noreferrer">Oleg Sych's blog</a> which is a mine of information about T4. Code generation is not a problem and T4 opens so many perspectives that I can't live without anymore.</p> <p>I'm currently working on a project where we use Entity Framework 4 for the data access layer, and Scrum as the agile project management method. From one sprint to another, there are several tables added, other modified, new requirements added. When you have run once into each potential EF problem (like knowing that default values from database are not persisted by default in the .edmx file, or changing a nullable column to a non-nullable and updating the designer doesn't change the mapped property state), you're good to go.</p> <p><strong>Edit:</strong> to answer your question, it's EF 4 whose code generation is based on T4 rather than T4 supporting EF. On EF 3.5 (or EF 1.0 if you prefer), you could in theory use T4 by writing them from scratch, parsing the EDMX file in the T4 code and generate your entities. It would be quite a lot of work considering all of this is already done by EF 4. Plus, Entity Framework 3.5 only supports one type of entitiy, whereas EF 4 as built in or downloadable templates for POCO entities (that don't know anything about persistence), Self-Tracking Entities...</p> <p>Considering Entity Framework itself, I think it was lacking many features in its first release, and while usable, was quite frustrating to use. EF4 is much more improved. It still lacks some basic features (like enum support), but it has become my data access layer of choice now.</p>
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    1. POIs ADO.NET Entity Framework (with ASP.NET MVC v2) a viable option when writing custom and contantly updated websites?
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    1. USJulien Lebosquain
    1. USJulien Lebosquain
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    1. COJulien:Does T4 have support for EF 1.0 ?
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