Unable to generate an explicit migration in entity framework

Question

I am adding a new migration but this message shows:

Unable to generate an explicit migration because the following explicit migrations are pending:

Answer 1

This error means there are pending migrations need to be commited before you can execute another explicit migration. You can choose to

1. Execute those pending migrations using Update-Database command
2. Delete those pending migrations. Safest way is open Migrations folder, right click on [201203170856167_left] > Exclude from project

After this one you can start "Add-Migration ..." again

Hope it helps