ErrorGeneratingOutput EF 6.1 RRS feed

  • Question

  • Upgraded a MVC project to EF 6.1.  in VS 2012 using Nuget

    Installed the EF 6.1 Tools:

    Now when I build the project The MyEntities.cs and the MyEntities.Context.cs file contains only:


    So the build fails.

    The VS110COMNTOOLS environment variable points to the correct path.
    I also completely deleted the edmx and recreated by build model from db; No change.

    • Edited by chuck02323 Monday, April 28, 2014 7:25 PM
    Monday, April 28, 2014 7:23 PM

All replies

  • When did VS2012 start working with EF 6? I know about EF 6 working with VS2013.
    Tuesday, April 29, 2014 1:43 AM
  • Hello chuck02323,

    What is your original Entity Framework? What model are you using, database first or code first?

    As far as I know, if we want to upgrade our MVC project from EF 5 to EF 6, we just need to install the EF6 by using Nuget. We does not need this tool in actual, the Tool is just used to give us additional choice.

    Do you have a try to create a new MVC project installing the EF6 directly rather than upgrading from EF 5(maybe) to EF 6 to see whether it will work since I create a MVC project in VS2012, and then upgrade it from EF5 to EF6 and build it successfully, even installing the tool?

    And please check if you are under this scenario:

    The code generator is looking for the missing DLLs in the following locations when using EF6 T4 template.


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    Tuesday, April 29, 2014 3:05 AM
  • We couldn't get vs 2013 to work with TFS 2010.

    So we're trying ef 6 with 2012.  Because its not part of nuget or vs anymore you have to search for new stuff and installation instructions with google.

    Tuesday, April 29, 2014 1:16 PM
  • Original was 5, then 6 then 6.1.

    You do need to install the EF tools or 6.1 won't work.

    I deleted and then rebuilt the edmx by reverse engineering the db.

    Still got errors. Delete both tt  files. Compile again then it works.

    EF upgrades/revisions are a disaster. Always have been.  Probably always will.  Poor documentation, poor notifications, poor integration.

    • Edited by chuck02323 Tuesday, April 29, 2014 1:22 PM
    Tuesday, April 29, 2014 1:21 PM
  • We couldn't get VS 2013 to work with TFS 2010.

    You can always get TFS 2012 or 2013 Express. They are free. I have TFS 2012 Express working with VS2010 Pro, VS2012 Web and Desktop Express  and VS2013 Pro. It could be a stop gap measure for you. I have it on my personal Windows 8 Pro development machine. The Express edition supports up to 10 concurrent connections. 

    I remember I had to install what in the link for VS2010 Pro that was using TFS Express 2012 to use TFS. You can't add projects to TFS through VS2010. I had to go to VS2012 or 2013 to do that. But you can check-in and check-out code in VS2010 that was connected to TFS2012.

    Maybe, there is a patch out there for VS2013 to TFS2010 or you can look into the free TFS Express editions as a stop-gap measure.

    There is always a way to skin the cat, and if I were you, you should make your way back to using VS2013 with EF 6 and MVC 5  and not on some update basis but build solutions from scratch.

    Tuesday, April 29, 2014 2:16 PM
  • I have 30 developers on tfs.  As a VS 2013 tfs fix MS support said to reinstall vs 2013 to get TFS to work.  I don't think having 30 people reinstall 2013 would do anything other than waste time.

    Tuesday, April 29, 2014 2:36 PM
  • Well, did you try what MS suggested? Have you taken a machine that had no VS of any kind installed on the machine, installed VS2013 and tried to connect to TFS? 

    No, I would have any problems telling 30 developers to do a reinstall if I knew that would fix the problem - no problem whatsoever. :)

    Tuesday, April 29, 2014 2:46 PM