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Hello!
I have an error whenever I try to scaffold a new scaffold element:
It says:
"Error
An error occurred while running the selected code generator:
"Exception of type 'System.InvalidOperationException' was thrown."
This is a link to my project: https://github.com/jedrulcia/TrainingPlanApp.Web.git
Thanks in advance!
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(121.6, 24%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETW%3C/text%3E%3C/svg%3E)
Hi @Jędrzej Koriat, I test your sample in my side and firstly I faced compile error in Assemblyinfo.cs which is auto-generate see screenshot below. I have to comment it, and then I can reproduce the same error message, even if I create a new class.
Then I found that you are using a localdb in appsettings.json. I think this might relate to database too, so that I had a test which using my localdb connection string instead of yours and this time I got a new issue like screenshot below. I think you might try to make sure the database you test have the corresponding tables as you used automapper in your project, for example create a new table and a corresponding new model, then try to scaffold controller for this new model.
I have the same issue when I try scaffolding the view model.
Please check if the versions of the NuGet packages required for the scaffolding match:
I have installed 8.0.3 version for all packages, as it is the latest Microsoft.VisualStudio.Web.CodeGeneration.Design version:
And the result is still the same:
Okay so I have observed that I had some issues since I added NUnit Test project to my solution. This was one of these issues that I had:
Whenever I opened the solution I had to comment these lines. However, I could work on my project anyways, so I wasn't bothered by it. But now I thought this could also affect scaffolding, and that was actually the issue. I have deleted the NUnit folder and project from my solution and it is working now. I do not need to have to unit tests for my project for now anyways, but leaving the comment if that would help anyone in future.