using Microsoft.EntityFrameworkCore; using Microsoft.EntityFrameworkCore.Design; namespace Demo.Data.RemoteData.RemoteDataBase { public abstract class DesignTimeDbContextFactoryBase : IDesignTimeDbContextFactory where TContext : DbContext { public TContext CreateDbContext(string[] args) { var builder = new DbContextOptionsBuilder(); builder.UseNpgsql("Host=45.67.56.214;Port=5421;Database=PresenceDB;Username=user5;Password=EtEJqhsf"); return CreateNewInstance(builder.Options); } protected abstract TContext CreateNewInstance(DbContextOptions options); } }