Ch1——初见get和set

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 
 6 namespace Ch1_Name
 7 {
 8     public class Name
 9     {
10         private string fname, mname, lname;
11         public Name(string first, string middle, string last)
12         {
13             fname = first;
14             mname = middle;
15             lname = last;
16         }
17         public string firstName
18         {
19             get { return fname; }
20             //set { fname = firstName; }
21         }
22         public string middleName
23         {
24             get { return mname; }
25             //set { mname = middleName; }
26         }
27         public string lastName
28         {
29             get { return lname; }
30             //set { lname = lastName; }
31         }
32         public override string tostring()
33         {
34             return string.Format("{0}{1}{2}", fname, mname, lname);
35         }
36         public string initials()
37         {
38             return string.Format("{0}{1}{2}", fname.Substring(0, 1), mname.Substring(0, 1), lname.Substring(0, 1));
39         }
40     }
41 
42     class Program
43     {
44         static void Main(string[] args)
45         {
46             Name myName = new Name("App","Ban","Code");
47             string fullName, inits;
48             fullName = myName.ToString();
49             inits = myName.initials();
50             Console.WriteLine("My name is {0}", fullName);
51             Console.WriteLine("My initials are {0}", inits);
52         }
53     }
54 }

重点说说get和set的用法。

以我的观点来看，get和set就是为了取代以前C++里的如下用法：

public class CClass
{
        private int num;
        public int getNum()
        {    
                return num;
        }  
        public void setNum(int newNum)
        {
                num = newNum;
        }
}

和以前的写法主要区别在于，C++采用公用成员函数的方法操作private数据，而C#采用与private数据相同格式的public数据，并在public数据上定义get和set。