C#基础--虚方法与重写

作用：子类可以对父类重写，虚方法是对多态特征体现。

 1  public class Animal
 2     {
 3         public string Name { get; set; }
 4         public virtual void Eat()
 5         {
 6             Console.WriteLine("{0}正在吃草",Name);
 7         }
 8 
 9     }
10     public class Sheep : Animal
11     {
12         public Sheep(){ Name = "羊"; }
13         public override void Eat()
14         {
15             base.Eat();
16             Console.WriteLine("吃草");
17 
18         }
19 
20     }
21 
22     public class Tigger : Animal
23     {
24         public Tigger() { Name = "老虎"; }
25         public override void Eat()
26         {
27             base.Eat();
28             Console.WriteLine("老虎吃羊");
29 
30         }
31     }

   Animal animal1 = new Sheep();
            Animal animal2 = new Tigger();
            animal1.Eat();
            animal2.Eat();