/// <summary>
        /// Entry point into console application.
        /// </summary>
        private static void Main()
        {
            // Create RefinedAbstraction
              Customers customers = new Customers("Chicago");

              // Set ConcreteImplementor
              customers.Data = new CustomersData();

              // Exercise the bridge
              customers.Show();
              customers.Next();
              customers.Show();
              customers.Next();
              customers.Show();
              customers.Add("Henry Velasquez");

              customers.ShowAll();

              // Wait for user
              Console.ReadKey();
        }