“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 vie

Answer 1

One of the possibility is if your web.config file is open then this error might appear. Try closing the web.config file and then add a View.

You can also reach out to this website for more reference: Error Running the Selected Code Generate Value

Hope this helps.

Answer 2

I tried it all and finally found a solution that worked, this issue only happens when the web.config file is open in the editor. Hope this help.

Credits : Vijay Ramakrishnan [MSFT]
https://developercommunity.visualstudio.com/content/problem/626755/error-running-the-selected-code-generator-value-1.html

Answer 3

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 4

I was able to fix this by replacing the web project with a new one.

-I renamed the project like project_old folder and removed it from solution. -Added a new project to the solution by right click and add project -Created the old controllers and everything with copying from old project files -Updated nuget packages and deleted old project files

Clean Solution -> Rebuild Solution and voilla

Answer 5

try both any one will work either of them.

1.Just delete .vs folder in project solution.
2.If above fix does not work.,close your web.config file if it is opened.

Answer 6

I was getting this error - as my project is a git repository, I ran git clean -xfd on it, then rebuilt it and was able to add a controller when I tried again.