C#-----多態

標籤：

多態的概念：通過繼承實現的不同對象調用相同的方法，表現出不同的行為，稱之為多態

 

override實現多態

public class Animal    {        public virtual void Eat()        {            Console.WriteLine("Animal eat");        }    }    public class Dog : Animal    {        public override void Eat()        {            Console.WriteLine("Dog eat");        }    }    public class WolfDog : Dog    {        public override void Eat()        {            Console.WriteLine("WolfDog eat");        }    }    class Tester    {        static void Main(string[] args)        {            Animal[] animals = new Animal[3];            animals[0] = new Animal();            animals[1] = new Dog();            animals[2] = new WolfDog();            for (int i = 0; i < 3; i++)            {                animals[i].Eat();            }        }}

 

abstract-override實現多態

public abstract class Animal    {　　　   public abstract void Eat();    }    public class Cat : Animal    {        public override void Eat()        {            Console.WriteLine("Cat eat");        }    }    public class Dog : Animal    {        public override void Eat()        {            Console.WriteLine("Dog eat");        }    }    public class WolfDog : Dog    {        public override void Eat()        {            Console.WriteLine("Wolfdog eat");        }    }    class Tester    {        static void Main(string[] args)        {            Animal[] animals = new Animal[3];            animals[0] = new Cat();            animals[1] = new Dog();            animals[2] = new WolfDog();            for (int i = 0; i < animals.Length; i++)            {                animals[i].Eat();            }        }    }

 

C#-----多態