委托示例代码

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            ShengChanGongChang shengChanGongChang = new ShengChanGongChang();
            BaoZhuangGongChcnag baoZhuangGongChcnag = new BaoZhuangGongChcnag();

            Func<Product> func1 = new Func<Product>(shengChanGongChang.DaBing);
            Func<Product> func2 = new Func<Product>(shengChanGongChang.ChouDouFu);

            baoZhuangGongChcnag.BaoZhuang(func1);
            baoZhuangGongChcnag.BaoZhuang(func2);
        }
    }
    class Product
    { 
        /// <summary>
        ///  产品名称
        /// </summary>
        public string Name { get; set; }
    }
    class Box
    {
        /// <summary>
        /// 产品实物
        /// </summary>
        public Product Product { get; set; }
    }
    // 包装工厂
    class BaoZhuangGongChcnag
    { 
        public Box BaoZhuang(Func<Product> getProduct)
        {
            Box box = new Box();
            Product product = getProduct.Invoke();
            box.Product = product;
            return box;
        }
    }
    // 生产工厂
    class ShengChanGongChang
    {
        public Product DaBing() 
        {
            Product product = new Product();
            product.Name = "大饼";
            return product;
        }
        public Product ChouDouFu()
        {
            Product product = new Product();
            product.Name = "臭豆腐";
            return product;
        }
    }
}