c# 07 接口

接口的实现方式和抽象类一样，都是用“:”表示即可，光实现的话":"后其他的接口以逗号隔开即可，如果此类不光实现接口还要有继承，那么继承必须跟在最前面。

测试类

using System;

namespace Demo3
{
    class Program
    {
        static void Main(string[] args)
        {
            Apple apple = new Apple();
            Grape grape = new Grape();
            apple.describe().colourDescribe().tasteDescribe();
            grape.describe().colourDescribe().tasteDescribe();

        }
    }
}

测试结果：

实现类：苹果

using System;
using System.Collections.Generic;
using System.Text;

namespace Demo3
{
    /// <summary>
    /// 苹果类
    /// </summary>
    public class Apple : Fruits<Apple>, Colour<Apple>, Taste<Apple>
    {
        public Apple colourDescribe()
        {
            Console.Write("颜色红红的");
            return this;
        }

        public override Apple describe()
        {
            Console.Write("我是一个大苹果");
            return this;
        }

        public Apple tasteDescribe()
        {
            Console.WriteLine("味道甜甜糯糯的");
            return this;
        }
    }
}

实现类：葡萄

using System;
using System.Collections.Generic;
using System.Text;

namespace Demo3
{
    /// <summary>
    /// 葡萄类
    /// </summary>
    public class Grape : Fruits<Grape>, Colour<Grape>, Taste<Grape>
    {
        public Grape colourDescribe()
        {
            Console.Write("紫色的颜色");
            return this;
        }

        public override Grape describe()
        {
            Console.Write("我是一串大葡萄");
            return this;
        }

        public Grape tasteDescribe()
        {
            Console.WriteLine("酸酸甜甜的味道");
            return this;
        }
    }
}

抽象类：抽象基类水果类

using System;
using System.Collections.Generic;
using System.Text;

namespace Demo3
{
     public abstract class Fruits<T>
    {
        /// <summary>
        ///描述
        /// </summary>
        public abstract T describe();
    }
}

接口：味道接口

using System;
using System.Collections.Generic;
using System.Text;

namespace Demo3
{
    /// <summary>
    /// 味道接口
    /// </summary>
    public interface Taste<T>
    {
        /// <summary>
        /// 味道描述
        /// </summary>
        T tasteDescribe();
    }
}

接口：颜色接口

using System;
using System.Collections.Generic;
using System.Text;

namespace Demo3
{
    /// <summary>
    /// 颜色接口
    /// </summary>
    interface Colour<T>
    {
        /// <summary>
        /// 颜色描述
        /// </summary>
        T colourDescribe();
    }
}