I cannot find the Entity Data Model under the 'Data' tab when adding a new item.
I have looked at several questions and answers, information on this and none of the solutions have worked.
I have repaired, uninstalled and reinstalled, installed the EF Tools package manually and tried uninstalling all VS related programs. I have also tried creating several new projects, Class Libraries, Web Projects under different .NET frameworks and it isn't there.
Main project: Visual Studio 2012, Class Library Project .NET 4.0
I updated Visual Studio 2012 using this link:
http://www.microsoft.com/visualstudio/eng/downloads#d-visual-studio-2012-update. After this update, the "Entity Data Model" option was added to the data tab.
The new Entity Data Model in VS 2012 by default uses T4 templates (.tt) files instead of former custom tool for code generation. The generated context is also based newer DbContext API instead of ObjectContext API used by Visual Studio 2010 (that is the reason why it doesn't have the method - the equivalent method in DbContext API is Set<T>). Both T4 and DbContext API are currently recommended approach for using EF.
I don't have VS 2012 on my current machine but what you can try is to delete both .tt and turn on the old generation as described in .Desinger.cs.
Edit: You may try to Re-install VS2012 and/or repair it. That should fix this issue. In addition, look at the release version of your VS2012.
Another suggested solution to re-install and reason why this happens - Unable to add Entity data model to a Visual Studio project
The accepted answer from here solved the problem in my case:
http://www.datazx.cn/Fv7p5a/xw-US/oaax2pu/2q7xs6/d8x6rssc-b4mt-fsix-bc6c-ct8mf8d6fsbc23rsdfd.html
I finally figured it out. I ran EFTools.msi from a C:\ProgramData\Package Cache\ subfolder, which only allowed me to 'uninstall' or 'repair'. I tried repair, but I get the same problem, so I did 'uninstall', then ran it again and it allowed 'install'. After this install, I can now add Entity Data Models.
Also, the accepted answer in the "Missing Entity Framework Template in Visual Studio 2012 Express for Web" threat on forums.asp.net suggests that repairing Entity Framework Designer for Visual Studio 2012 enu via 'Start -> Control Panel -> Programs and Features' might work as well (I can post only two links with my current 1 point StackOverflow reputation, so I won't provide the exact source).
Another possible solution:
My Problem was: Visual Studio is installed on Drive D:\, whereas the Entity Framework Installer placed the Package in c:...\VisualStudio 10.0\Common7....\ItemTemplates folder. --> Copied the AdoNetEntityDataModelCSharp.zip to drive d: and ran devenv /installvstemplates. This fixxed it for me. Edit: Also had to copy Various DLLs from IDE folder, PrivateAssemblies and PublicAssemblies. then run devenv /ResetSkipPkgs
http://social.msdn.microsoft.com/Forums/en-US/c059069b-eae4-48b4-a06e-ffd5f186077b/adonet-data-entity-model-template-missing-in-vs-2010-ultimate?forum=adodotnetentityframework
I also installed VS in a non-default path (different disk partition), so it indeed may be one of the potential causes of the problem.
You can right-click the designer surface and choose the model browser; Here is the only way to activate the Model browser in solution explorer.
The Model browser is included in VS 2012 recommended settings during installation.
Related
Since yesterday I am getting a weird error when I try to create a new .Net Core Web project. The error I am getting:
It seems this is only the case for .Net Core projects (Console application .Net core also doesn't work but a regular .Net web project does work...
I looked online but it seems there is no documentation about this error whatsoever.
Some things I tried already:
Repairing Visual Studio 2017
Checked the log by running Devenv /log (Warning :
Performance warning: String load failed. Pkg:{D15F5C78-D04F-45FD-AEA2-D7982D8FA429} (VisualBasicProjectSystemPackage) LANG:0409 ID:2
)
UPDATE
I think I know what caused the problem. Prior to the problem I deleted my old user account (migrated the account so everything copied to a new user account), my guess is that Visual Studio also installs templates on my user account and with the removal of my old user account I also deleted some templates. The question however is, why is the .Net Core template the only one not working then?
Anyone know what causes this problem and how to fix it?
Removing Visual Studio and reinstalling it seems to fix the issue. Before reinstalling, make screenshots of all your settings and (manually) downloaded components.
Same problem here, I tried to repair (multiple times) the installation but the problem wasn't solved.
In my case I didn't change user accounts.. I just uninstalled VS 2013 Ultimate, Unistalled VS 2015 (with some difficulty) and then installed VS2017..
I have created new MVC web application in visual studio with Individual account. Every functionality is working fine including Identity and sql localDB.
But when I add entity framework into my project. It giving me error in dialog box. "The operation could not completed". In output window i saw
TF10121: The path '\\D:\c#\2016\testdelete\testdelete\Data\Model1.edmx.diagram' is not found or not supported. Type or select a different path.
I googled it but everybody giving different solution and those are not working.
I re-install my visual studio, but same error.
Do I need to change any path to solve this issue ?
I have created new solution from scratch, and there is only one project.
Tried with below solutions,
VS2010 The operation could not be completed
Installed mentioned package. (ASPNET WEB FRAMEWORK TOOL)
Visual studio was suggested me to install "AspNet5.ENU.RC1_Update1_KB3137909", and I installed this too.
I am using latest EF.
I tried to remove project and created new project as mentioned here,
http://chrisghardwick.blogspot.in/2011/12/tf10121-path-is-not-found-or-not.html
I got really weird problem. I am starting to learn MVC but my ASP.NET template seems to be incomplete and does not support MVC at all. It doesn't matter which version of .NET Framework I choose. Look:
What is more weird, my ASP.NET MVC 4 Template from previous version of visual studio works fine, without any issues (I can add views, controllers etc). BUT ONLY if I choose .NET Framework lower than 4.5.2.
What I already did:
I tried command: devenv /installvstemplates
I did repair installation of visual studio and its updates
I uninstalled all addons and extensions
What I do not want to do:
I dont want to clean reinstall Visual Studio
What I think I can do to fix this:
copy cache from someone and paste it to my \Common7\IDE, but I do not
have access to working cache files.
I would really appreciate your help guys.
/edit (I am sorry for my mistake with adding answer)
So I tried to fix it as i didn't receive any answer, I tried many things from google results, many pointing to this site but nothing worked.
I uninstalled visual studio, cleaned registry, used /uninstall /force with 2012, 2013 and all updates isos with no luck.
I tried this solution:
Can't create new MVC5 project or any other ASP .NET projects in Visual Studio 2013
but it didn't work either.
Does anyone has any idea? I will give you some reward if your answer help me.
I would really appreciate anything. Point me to some direction.
ONLY MVC 5 doesn't work, no templates are shown (in one asp.net
template) and if I download mvc 5 template from the web, or convert
my existing mvc 4 project to mvc 5 it stops showing "add controller,
add view options"
All MVC 4 projects and templates are working without any issues at all.
/edit 2
=== WORKAROUND ===
If someone tries to resolve this issue, basically I coudn't do it, but I found workaround which is ugly and simple:
Deleted every single extension AND every VS Update
Uninstalled Visual Studio
Uninstalled it again using /force method
Cleared its every trace and the registry traces I was able to found
Used TuneUp utilities to clear broken registry keys
Uninstalled SQL Server 2014
Uninstalled everything that was related to Visual Studio (Web Essentials, .Net Frameworks, Command Tools etc), check in Ccleaner,
it will be much faster.
Installed Visual Studio with Update 3 and... It was broken right after installation, missing files errors
I repaired the installation and everything seemed to work but... localization, language files didn't work, caused visual
studio to
show errors or simply hang.
I tried to reinstall language pack but I received error "this language is already installed". I couldn't uninstall it
either. I finally added language files manually:
in VS folder in Program Files searched for '1033' and 'en' folders
opened my acronis partition backup
added to every directory where one of the two folders was found, folder equivalents of my language '10xx' or 'xx'
WARNING: If you won't do it for EVERY folder, you will get assembly missing error, or your visual studio will have spikes (especially in .aspx files). Don't copy paste it all at once either cuz if you place localization files for assemblies, extensions you don't have, it will cause errors too.
TIP: If you don't have backup, simply take this files from someone else, they should generally work, no matter which update VS of the other person have.
Its unfortunate that no one had better answer for me but I do hope that this will at least help guys in similar situation.
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.
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.
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
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/
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
Right click the .tt file and select "Run Custom Tool", that should update it:
You should have a <XXX>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
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.
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.
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
After Changing the laptop When I updating Entity Framework model, stored procedures are not seen in code
What I have done to make this working
Update visual Studio 2012 Update 5 (Not Working)
Update/Modify from Programs (Not working)
After update stored procedures, build the project again then go to context.cs, right click and run custom tool (Not Working)
Doing RND (Someone says the issue is due to some permissions in MSSQL) But unfournately I have done alot of permission in MSSQL but (Not Working)
Install 2019 and run the project. Now everything works fine
Conclusion
Visual studio 2012 have a bug (bug is resolved in Update 1, 2, 3 and 4)
Change the Visual Studio version will resolve the issue
I had this problem in EF 6 using Visual Studio 2022. I tried all of the things here plus cleaning and rebuilding the solution, deleting the stored procedure out of EDMX and the database and re-updating, closing VS, and restarting my computer. None of those things worked. What ended up fixing it was simply opening the DTSEF.vb file. When I did that, Visual studio found the missing properties in the result object.
I've reinstalled my laptop - Windows 7, VS2010, VS2010 SP1, SQL2008 and SQL2008 SP2.
I've also done windows updates - no updates available from update window anymore
The issue I've is: When I double click on the EDMX file it gets directly in to the XML. Why is that?
I don't get any error....
I can't do update from Database or add entities from Database etc....
I googled and found you should do open with and choose XML and then close XML and double click again. I've tried several options (open with ) and I don't get the UI Designer for my Entity Framework (edmx ) file.
I clicked on the properties of the file (*.edmx)
and I see Cusotmtool: EntityModelCodeGenerator and build action : EntityDeploy
I then right clicked on EDMX and choose 'Run Custom Tool" and then I receive this error
"cannot find custom tool 'EntityModelCodeGenerator' on this system."
I checked VS2010 and VS2010 SP1 is installed. I did again install from DVD and choose REPAIR and I still have this problem....
so what could be problem?
thanks
you had unchecked some of recommended features while installing the Visual Studio. Just Reinstall the visual studio to configure the features. after installation open the .edmx file with the "ADO.Net Entity Framwork designer".
Try devenv.exe option /resetskippkgs, then solve the error.
The question is about VS2010, but if you're looking at the same problem on a newer Visual Studio (e.g. VS2013), you probably need to reapply the latest VS update (worked for me) or reinstall VS.