DictionaryBase

基类DictionaryBase 实现了 IEnumerable和ICollection 。IList接口 IDictionary接口都有add()、remove()方法。

话不多说直接上案例：

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

namespace DictionaryBase_Test

{
    public abstract class Animal
    {
        
        public string Name { get; set; }
        public Animal() => Name = "The animal with no name";
        public Animal(string newName) => Name = newName;
        public void Feed() => Console.WriteLine($"{Name} 在吃东西！");
        
    }

    public class Animals:DictionaryBase
    {
        public void Add(string newID, Animal newAnimal) =>
            Dictionary.Add(newID, newAnimal);
        public void Remove(string animalID) =>
            Dictionary.Remove(animalID);
        public Animals() { }
        public Animal this[string animalID]
        {
            get { return (Animal)Dictionary[animalID]; }
            set { Dictionary[animalID] = value; }

        }
    }

    public class Cow:Animal
    {
        public Cow(string newName) : base(newName) { }
        public void Milk()
        {

            Console.WriteLine($"{this.Name} 在被挤奶！");
        }
    }

    public class Chick:Animal
    {
        public Chick(string newName) : base(newName) { }
        public void LayEgg()
        {
            Console.WriteLine($"{this.Name}在下蛋！");

        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Animals animalsDictionary = new Animals();
            animalsDictionary.Add("1", new Cow("晖晖"));
            animalsDictionary.Add("2", new Chick("昕昕"));

            foreach(DictionaryEntry myEntry in animalsDictionary )
            {
                Console.WriteLine($"KEY:{myEntry.Key} VALUE:{((Animal)myEntry.Value).Name} ");
                //Console.WriteLine(myEntry.Value.ToString());
                    
            }

            animalsDictionary["1"].Feed();
            ((Chick)animalsDictionary["2"]).LayEgg();

            Console.ReadKey();


        }
    }
}