migration remove and add again.net core code example

Example 1: how to remove last migration in ef core

* CLI
dotnet ef migrations remove

*Package Manager Console
PM> Remove-Migration

Example 2: The migration '20200806160941_InitialMigration' has already been applied to the database. Revert it and try again. If the migration has been applied to other databases, consider reverting its changes using a new migration.

dotnet ef database update 0
dotnet ef migrations remove