"There was an error running the selected code generator: 'The value -1 outside the acceptable range of [0,2147483647]. Parameter name :value''"

Question

I am working on an ASP.NET MVC project and so far I had no problems with scaffolding any type of items until now.

Every time I want to create a new controller or view, I get the following error message:

There was an error running the selected code generator: 'The value -1 is outside the acceptable range of [0,2147483647]. Parameter name :value'

This issue only arises in the project that I'm currently working on as I tried creating a new controller in another project and it worked flawlessly.

I already tried the solution to delete the ComponentModelCache folder and rebuilding the project but the problem still persists.
My Visual Studio 2019 is also up to date.

EDIT: Pulling the project from git source control on another PC and restoring the packages fixed the issue for me. You probably don't have to do it from another computer, just try deleting the project and restoring it from remote.

EDIT 2: Creating a second view and the same problem is back again...

Answer 1

I fixed this by unloading and reloading the project

Answer 2

You just need to - delete ".vs" folder from your solution directory. In summary only the deleting of the .vs folder is what has worked for me.

On reopening VS2019 16.2.3 - I can now add in Controllers and Views without seeing this error.

Found it from Microsoft Developer Community site: https://developercommunity.visualstudio.com/content/problem/626755/error-running-the-selected-code-generator-value-1.html?childToView=684261#comment-684261

code-generator-solution

Answer 3

This issue has been resolved in Visual Studio 2019 version 16.2.4. The release notes are available here:

https://learn.microsoft.com/en-us/visualstudio/releases/2019/release-notes#16.2.4