“There was an error running the selected code generator” in VS 2013 scaffolding

by

VS2013 Error: There was an error running the selected code generator:
‘ A configuration for type ‘SolutionName.Model.SalesOrder’ has already
been added …’

I had this problem while working through a Pluralsight Course “Parent-Child Data with EF, MVC, Knockout, Ajax, and Validation”. I was trying to add a New Scaffolded Item using the template MVC 5 Controller with views, using Entity Framework.

The Data Context class I was using including an override of the OnModelCreating method. The override was required to add some explicit database column configurations where the EF defaults were not adequate. This override was simple, worked and no bugs, but (as noted above) it did interfere with the Controller scaffolding code generation.

Solution that worked for me:

1 – I removed (commented out) my OnModelCreating override and the scaffolding template completed with no error messages – my controller code was generated as expected.

2 – However, trying to build the project choked because ‘The model had changed’. Since my controller code was was now properly generated, I restored (un-commented) the OnModelCreating override and the project built and ran successfully.

More Related Contents:

  1. How do you login/authenticate a user with Asp.Net MVC5 RTM bits using AspNet.Identity?
  2. ASP.NET MVC 5 culture in route and url
  3. Unauthorised webapi call returning login page rather than 401
  4. How to get current user, and how to use User class in MVC5?
  5. How to add claims in ASP.NET Identity
  6. Get List of Zero Reference Codes in Visual Studio
  7. Enable Entity Framework 6 for MySql (C#) in WinForms of Microsoft Visual Studio 2013
  8. Using JSON.NET to return ActionResult [duplicate]
  9. Scaffolding controller doesn’t work with visual studio 2013 update 2
  10. Do I need a Global.asax.cs file at all if I’m using an OWIN Startup.cs class and move all configuration there?
  11. ASP.Net MVC route to catch all *.aspx requests
  12. Trying to debug Windows Store App from dump files
  13. Breakpoint Failed to Bind – Visual Studio 2015
  14. Visual Studio 2013 doesn’t discover unit tests
  15. Comboboxes are linked for some reason
  16. unable to evaluate expression whilst debugging
  17. Log Queries executed by Entity Framework DbContext
  18. Could not load file or assembly ‘System.Web.Http 4.0.0 after update from 2012 to 2013
  19. How to I apply filter while paginating in Asp.net MVC and entity Framework?
  20. ASP.NET Identity change password
  21. How do I mock User.Identity.GetUserId()?
  22. How to add Web API to an existing ASP.NET MVC (5) Web Application project?
  23. Async PartialView causes “HttpServerUtility.Execute blocked…” exception
  24. How to return a PDF from a Web API application
  25. How require authorization within whole ASP .NET MVC application
  26. Seed Entities AND Users, Roles?
  27. How to represent a month of checkboxes in an MVC model
  28. Complex object and model binder ASP.NET MVC
  29. find certificate on smartcard currently on reader
  30. How to renew the access token using the refresh token?

Leave a Comment