public static void Main(string[] args) { //CreateWebHostBuilder(args).Build().Run(); IWebHost host = CreateWebHostBuilder(args).Build(); using (IServiceScope scope = host.Services.CreateScope()) { IServiceProvider services = scope.ServiceProvider; try { DatabaseContext context = services.GetRequiredService <DatabaseContext>(); RoleManager <IdentityRole> roleManager = services.GetRequiredService <RoleManager <IdentityRole> >(); UserManager <ApplicationUser> userManager = services.GetRequiredService <UserManager <ApplicationUser> >(); SampleData.Initialize(context, roleManager, userManager); ICategoryService categoryService = services.GetRequiredService <ICategoryService>(); IRegionService regionService = services.GetRequiredService <IRegionService>(); ICacheService cacheService = new CacheService(); cacheService.CacheCategories(categoryService); cacheService.CacheRegions(regionService); Microsoft.EntityFrameworkCore.DbSet <ApplicationUser> a = context.ApplicationUsers; } catch (Exception ex) { ILogger <Program> logger = services.GetRequiredService <ILogger <Program> >(); logger.LogError(ex, "An error occurred while seeding the database."); } } host.Run(); }