Can We add migration file from c#, instead of PackageManagerConsole

Hi narensrinivas  Yes there is way you can add migration manually 

Here is the steps : 

• Create a Migration Class: You can manually create a migration class that inherits from Migration and implement the Up and Down methods.

• Add the Migration to the Context: You would then need to add the migration to your DbContext.

• Apply the Migration: You can use the Database.Migrate() method to apply the migration to your database.