namespace MessengerApi.Db.Npg.Migrator { internal class Program { static void Main(string[] args) { // You can use empty string to build the context when adding a migration - adding a migration does not hit the DB. // DesignTimeDbFactory.ConnectionString.cs is not versioned on purposed. Add missing property file for this partial class and then run this command: // Add-Migration YourMigration -Project MessengerApi.Db.Npg -StartupProject MessengerApi.Db.Npg.Migrator -Verbose -Context MessengerNpgDbContext // To update the database, make sure your connection string is correct and run this command: // Update-Database -Project MessengerApi.Db.Npg -StartupProject MessengerApi.Db.Npg.Migrator -Verbose -Context MessengerNpgDbContext } } }