Template Method Design Pattern

Program.cs

using System;

namespace TemplatePattern
{
    //Template abstract class
    public abstract class OrderTemplate
    {
        public abstract void SelectProduct();
        public abstract void Payment();
        public abstract void Deliver();
        public void ProcessOrder()
        {
            SelectProduct();
            Payment();
            Deliver();
        }
    }
    //concrete classe
    public class OnLineOrder : OrderTemplate
    {
        public override void Deliver()
        {
            Console.WriteLine("Product shipped via courier");
        }

        public override void Payment()
        {
            Console.WriteLine("Online payment done successfully");
        }

        public override void SelectProduct()
        {
            Console.WriteLine("Product added to cart successfully");
        }
    }
    //concrete class
    public class StoreOrder : OrderTemplate
    {
        public override void Deliver()
        {
            Console.WriteLine("Product delivered to customer at counter");
        }

        public override void Payment()
        {
            Console.WriteLine("Paid at counter");
        }

        public override void SelectProduct()
        {
            Console.WriteLine("Product is selected by customer from rack in store");
        }
    }
    class Program
    {
        //entry point
        static void Main(string[] args)
        {
            Console.WriteLine("----------- Online Order Process -----------");
            OrderTemplate onlineOrder = new OnLineOrder();
            onlineOrder.ProcessOrder();
            Console.WriteLine("----------- Retail Store Order Process -----------");
            OrderTemplate storeOrder = new StoreOrder();
            storeOrder.ProcessOrder();
            Console.Read();
        }
    }
}