Entity Framework Core Tutorial 交易

using (var context = new MyContext())
{
    using (var transaction = context.Database.BeginTransaction())
    {
        try
        {
            var customer = context.Customers
                .Where(c => c.CustomerId == 2)
                .FirstOrDefault();
                customer.Address = "43 rue St. Laurent";

            context.SaveChanges();
             
            var newCustomer = new Customer
            {
                FirstName = "Elizabeth",
                LastName = "Lincoln",
                Address = "23 Tsawassen Blvd."
            };
             
            context.Customers.Add(newCustomer);
            context.SaveChanges();

            transaction.Commit();
        }
        catch (Exception)
        {
            transaction.Rollback();
        }
    }
}