C # Study Notes-inherit basic knowledge,

C # Study Notes-inherit basic knowledge,

 1 namespace Inheritance 2 { 3     class Program 4     { 5         static void Main(string[] args) 6         { 7             Dog dog = new Dog(); 8             dog.Age = 10; 9             dog.Bite();10             dog.GetAge();11             dog.BiteMan();12             Dog oldDog = new Dog(10);13 14 15             Animal dog2 = new Dog();16             dog2.Bite();17             dog2.BiteMan();18             ((Dog)(dog2)).BiteMan();        //casts19             Console.ReadLine();20         }21     }22 23     public class Animal24     {25         public int Age26         {27             get;28             set;29         }30         public Animal()     //constructor31         {32             Console.WriteLine("Animal constructure");33         }34 35         public Animal(int age)36         {37             Console.WriteLine("Old Animal");38             this.Age = age;39         }40 41         public virtual void Bite()      //virtual can be override when it be inherited42         {43             Console.WriteLine( "Animal bite");44         }45         public virtual void GetAge()46         {47             Console.WriteLine(Age);48         }49 50         public void BiteMan()       //can't be overrided without virtual51         {52             Console.WriteLine("Animal bite man");53         }54     }55     public sealed class Dog : Animal        //sealed：can't be inherited56     {57         public Dog()        //constructor58         {59             Console.WriteLine("Dog constructure");60         }61         public Dog(int age):base(age)       //call specific function     62         {63             Console.WriteLine("Old Dog");64             this.Age = age;65         }66         public override void Bite()     //override the parent class method 67         {68             Console.WriteLine("Dog bite");69         }70 71         public new void BiteMan()       //new:new method which is as same as the parent class method,not override72         {73             Console.WriteLine("Dog bite man");74         }75     }76 }