Startup.cs

using System;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Smartstore.Core.Data;
using Smartstore.Data;
using Smartstore.Data.Providers;
using Smartstore.Engine;
using Smartstore.Engine.Builders;

namespace MyOrg.DomainTutorial
{
    internal class Startup : StarterBase
    {
        public override void ConfigureServices(IServiceCollection services, IApplicationContext appContext)
        {
            services.AddTransient<IDbContextConfigurationSource<SmartDbContext>, SmartDbContextConfigurer>();
        }
        private class SmartDbContextConfigurer : IDbContextConfigurationSource<SmartDbContext>
        {
            public void Configure(IServiceProvider services, DbContextOptionsBuilder builder)
            {
                builder.UseDbFactory(b =>
                {
                    b.AddModelAssembly(GetType().Assembly);
                });
            }
        }
    }
}