After updating Entity Framework model Visual Studio does not see changes

Question

If I do any changes to my EF 5 0 model  VS does not seem to see the changes  I have tried adding a new table  which shows up fine in the model  but then if I try to use it somewhere the table does not show up in intellisense and I can t use it   I have also tried changing datatypes of a column  which again shows up fine if I look at the  edmx model file  but visual studio will still give me compiler errors on that field because I am trying to assign the incorrect datatype   If I delete the EDMX completely  and recreate it  then the changes work fine  but it is tiresome to regenerate from database each time when I should be able to just  update model from database  and rebuild   I have never had these problems with EF before  Does anyone know the cause or the fix to this problem   Thanks

User · Answer

You should have a  lt XXX gt Model tt file somewhere which is the T4 template that generates your model classes   If it is in a different project  it will not update when you save the edmx file   Anyway  try right-clicking on it in Solution Explorer and choosing Run Custom Tool

User · Answer

I also had this problem  however  right-clicking on the model tt file and running  Custom tool  didn t make any difference for me somehow  but a comment on the page Ghlouw linked to mentioned to use the menu item  BUILD   Transform All T4 Templates   which did it for me

User · Answer

I searched for this answer because I had a similar situation in VS2013   In my case  I found that a simple  Clean Solution  cleared out all the old definitions

User · Answer

This is apparently a bug in the Entity Framework that the model does not get updated when your Edmx file is located inside a folder   The workarounds available at the moment are    Install VS 2012 Update 1 which should fix the bug  If you are not in a position to install Update 1  you will have to right click on the model tt T4 template file and click run custom tool  This will update the classes for you    Hope that helps someone out there    Link  http   thedatafarm com blog data-access watch-out-for-vs2012-edmx-code-generation-special-case

User · Answer

If this is the bug with the edmx file located in a folder it is now fixed - download and install VS 2012 Update 1  You can get it from  http   www microsoft com visualstudio eng downloads d-visual-studio-2012-update

User · Answer

Are you working in an N-Tiered project   If so  try rebuilding your Data Layer  or wherever your EDMX file is stored  before using it

User · Answer

Right click the  tt file and select  Run Custom Tool   that should update it

User · Answer

I ve also experienced this problem with none of the classes being generated under the model tt file   In my case it was down to issues with how I had built the DB in SQL2012  I d set a column in a table to nullable that was also a foreign key and although I think you should be able to do this it caused a problem in EF5   As soon as this was cleared and the diagram updated from the database they reappeared   EF5 VS2013

User · Answer

First Build your Project and if it was successful  right click on the  model tt  file and choose run custom tool  It will fix it    Again Build your project and point to  model context tt  run custom tool  it will update DbSet lists

[c#] After updating Entity Framework model, Visual Studio does not see changes

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