How to deal with this problem?

Question

ASP.NET

I'm learning "ef core 2" from a book by adam freeman.
Here is a link to the model
https://github.com/Apress/pro-ef-core-2-for-asp.ne...

Answer 1

Hello,
I'm talking in the ball, because I don't see the project and there is not enough data.
Most likely, you need to add Microsoft.EntityFrameworkCore.SqlServer to the nuget packages in addition to the already connected Microsoft.EntityFrameworkCore.
Startup.cs should also contain UseSqlServer if you are working with MS SQL database