C#虚方法和抽象方法区别

 1     protected void Button1_Click(object sender, EventArgs e)
 2         {
 3             BasketBallPlayer basketplayer = new BasketBallPlayer();
 4             basketplayer.Name = "姚明";
 5             Response.Write(basketplayer.getName());
 6             Response.Write(basketplayer.getWeight());
 7             Response.Write(basketplayer.getSpecial());
 8 
 9             Response.Write("
");
10 
11             Player player = new BasketBallPlayer();
12             player.Name = "王飞人";
13             Response.Write(player.getName());
14             Response.Write(player.getWeight());
15             Response.Write(player.getSpecial());
16 
17         }
18     }
19 
20     /// 

21     /// 抽象类动物
22     /// 
23     public abstract class Player
24     {
25         /// 

26         /// 运动员名字
27         /// 
28         public string Name;
29         /// 

30         /// 虚方法，获取名字
31         /// 
32         public virtual string getName()
33         {
34             return "我是运动员，我的名字叫：" + Name + "
";
35         }
36         /// 

37         /// 虚方法，获取运动员体重
38         /// 
39         public virtual string getWeight()
40         {
41             return "运动员体重50公斤
";
42         }
43         /// 

44         /// 抽象方法，获取运动员专长
45         /// 
46         /// 
47         public abstract string getSpecial();
48     }
49     /// 

50     /// 运动员的派生类
51     /// 
52     public class BasketBallPlayer : Player
53     {
54         /// 

55         /// 重写虚方法override
56         /// 
57         public override string getName()
58         {
59             return "我是篮球巨星：" + Name + "
";
60         }
61         /// 

62         /// 不用override,可以不写new,但会引起警告错误，编译时系统会自动为它加上new关键字
63         /// 
64         public new string getWeight()
65         {
66             return "篮球巨星体重100公斤
";
67         }
68         public override string getSpecial()
69         {
70             return "投篮准
";
71         }
72     }