[Share Code] Hướng dẫn interface trong C# - Lập trình C# - Lập trình C Sharp

#Cat.cs

using System;
namespace Lession6
{
    public class Cat : Animal
    {
        public Cat()
        {
        }

        public override void ShowSound()
        {
            Console.WriteLine("Meo ... Meo ...");
        }
    }
}

#Citizen.cs

using System;
namespace Lession6
{
    public class Citizen : ISound
    {
        public string Name { get; set; }
        public int Age { get; set; }

        public Citizen()
        {
        }

        public void ShowSound() {
            Console.WriteLine("Am thanh tu nguoi");
        }
    }
}

#Device.cs

using System;
namespace Lession6
{
    public class Device : ISound
    {
        public string Name { get; set; }
        public float Price { get; set; }

        public Device()
        {
        }

        public void ShowSound() {
            Console.WriteLine("Hien thi am thanh thiet bi");
        }
    }
}

#Dog.cs

using System;
namespace Lession6
{
    public class Dog : Animal
    {
        public Dog()
        {
        }

        public override void ShowSound()
        {
            Console.WriteLine("Go ... Go ...");
        }
    }
}

#ISound.cs

using System;
namespace Lession6
{
    public interface ISound
    {
        void ShowSound();
    }
}

#Animal.cs

using System;
namespace Lession6
{
    public abstract class Animal : ISound
    {
        public string Name { get; set; }
        public string Foodtype { get; set; }

        public Animal()
        {
        }

        public abstract void ShowSound();
    }
}

#Program.cs

using System;
using System.Collections.Generic;

namespace Lession6
{
    class Program
    {
        static void Main(string[] args)
        {
            List<ISound> sounds = new List<ISound>();

            sounds.Add(new Device());
            sounds.Add(new Device());
            Device device = new Device();
            sounds.Add(device);

            sounds.Add(new Citizen());
            sounds.Add(new Citizen());
            sounds.Add(new Citizen());

            sounds.Add(new Dog());
            sounds.Add(new Dog());

            sounds.Add(new Cat());
            sounds.Add(new Cat());

            foreach(ISound s in sounds) {
                s.ShowSound();
            }
        }
    }
}

namespace Abc {
    class Test {
        
    }

    class Test1 {
        
    }
}