Using T4 Templates to generate EF classes

re: Using T4 Templates to generate EF classes

Artem Govorov — Wed, 29 Oct 2008 07:29:45 GMT

Hi Danny,

very interesting technique, I may consider using it for one of my projects to override some designer code generation issues.

One possible problem function imports. I've found them in your ToDo list, but when I tried to implement them - I found that System.Data.Metadata.Edm.EntityContainer does not expose FunctionImports (it has them but as internal property).

re: Using T4 Templates to generate EF classes

dsimmons@microsoft.com — Fri, 31 Oct 2008 22:41:14 GMT

Artem,

Sorry for not responding sooner. The basic answer for this will be to parse the CSDL XML file directly and get the information from there. It's nice when we can use the metadata APIs to get the info easily, but there are ways around things when they are misisng.

- Danny

re: Using T4 Templates to generate EF classes

mli — Mon, 10 Nov 2008 12:08:16 GMT

Hi Danny,

Very interesting approach, and for sure easier than hooking into the original code generation process.

I was trying to make this .tt file dependent upon the .edmx file, as to automatically regenerate when saving the .edmx file. No success however.

Can this be done you think?

Thanks,

Michel.

re: Using T4 Templates to generate EF classes

dsimmons@microsoft.com — Tue, 11 Nov 2008 04:09:14 GMT

@Michel,

There's not a real simple way to accomplish this. The standard T4 mechanism is to just manually generate. We're looking into some ideas to make this more automatic (but still giving control over whether or not you want it to happen all the time) in VS2010, but I don't yet have a good suggestion for you to use with VS2008sp1. If I come up with something, I'll post it to my blog.

- Danny

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