代码重构之委派代替继承【组合代替继承】

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ReplaceInheritanceWithDelegation
{
    /// <summary>
    /// 小鸟
    /// </summary>
    public class Bird
    {
        public void Fly()
        {
            Console.WriteLine("在蓝天上飞翔~~");
        }
    }
    /// <summary>
    /// 飞机
    /// </summary>
    public class Airplane
    {
        private Bird bird { get; set; }
       
        public Airplane()
        {
            bird = new Bird();
        }

        public void Fly()
        {
            bird.Fly();
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ReplaceInheritanceWithDelegation
{
    class Program
    {
        /// <summary>
        /// 飞机和小鸟都能飞，但是飞机不是鸟，所以不能直接使用继承去使用鸟的飞翔的接口
        /// </summary>
        /// <param name="args"></param>
        static void Main(string[] args)
        {
            Bird bird = new Bird();
            bird.Fly();
            Airplane airplace = new Airplane();
            airplace.Fly();
            Console.ReadKey();
        }
    }
}