protected override void ConfigureWebHost(IWebHostBuilder builder) { builder.ConfigureServices(services => { var provider = new ServiceCollection() .AddEntityFrameworkInMemoryDatabase() .BuildServiceProvider(); services.AddDbContext <ACSDbContext>(options => { options.UseInMemoryDatabase("InMemoryDb"); options.UseInternalServiceProvider(provider); }); var sp = services.BuildServiceProvider(); using (var scope = sp.CreateScope()) { var scopedServices = scope.ServiceProvider; var dbContext = scopedServices.GetRequiredService <ACSDbContext>(); //dbContext.Database.EnsureCreated(); try { DataSeeder.Populate(dbContext); } catch (Exception e) { Console.WriteLine(e); } } }); }