.net核心EntityFramework“添加迁移”无效

Question

After I deleted the Database in (localdb)\\MSSqlLocalDB and Contents of the Migrations folder in my .NET Core MVC Project, I expected it to create a new Migration and lets me create the Database with "Add-Migration Init" and "Update-Dabase". However it won't create the Migration due to not finding the Database (Error Code: 4060). I don't understand how I can create the Database from PMC when it says that. And I don't understand why it tells me that.

Answer 1

Try to clean up your project and re-build it. What also work by me is to close and restart visual studio.