public class DbInitializer
{
    public async Task Initialize(ApplicationDbContext context,OmiseUserManager userManager)
    {
        context.Database.EnsureCreated();
        if (!context.TxTypes.Any())
        {
            string[] txTypes = { "Пополнение", "Вывод", "Капитализация процентов", "Бонус от реферала" };

            for (int i = 0; i < txTypes.Length; i++)
            {
                await context.AddAsync(new Testt
                {
                    TxTypeId = i,
                    Name = txTypes[i]
                });
                try
                {
                    await context.SaveChangesAsync();

                }
                catch (Exception ex)
                {
                    throw;
                }
            }
        }

public class Program
{
    public static void Main(string[] args)
    {
        var host = BuildWebHost(args);

        using (var scope = host.Services.CreateScope())
        {
            var services = scope.ServiceProvider;
            try
            {
                var context = services.GetRequiredService<ApplicationDbContext>();
                var userManager = services.GetRequiredService<OmiseUserManager>();
                DbInitializer initializer = new DbInitializer();
                initializer.Initialize(context, userManager).Wait();
            }
            catch (Exception ex)
            {
                var logger = services.GetRequiredService<ILogger<Program>>();
                logger.LogError(ex, "An error occurred while seeding the database.");
            }
        }
        host.Run();
    }