Can't do .net ef database migration, what's the reason?

Question

.NET

I changed the code on the sharp, added one column that was supposed to be added to the table, made a migration, and writes to me

No migrations were applied. The database is already up to date.

What could be the problem?
I use entity framework

Answer 1

The problem was that half of the solution was on .net core and half on .no
added a crutch from stackoverflow and it worked, it’s not clear why)) probably a bug in .net core

Answer 2

In the question, write which approach you are using. Database first, Model first, Code first.
A little from the project, how is it that you have, what exactly was created, where "it" is and how it looks.

Answer 3

did you add the migration itself? https://metanit.com/sharp/entityframework/3.12.php