Property总结

Property一般用来给field赋值：

View Code

1 private string _name
2 public string Name
3 {
4     get{return _name;}
5     set{_name = value;}
6 }

可以给Field赋值的不只是property，也可以是constractor或者一个方法，但是如果我们想要向外暴露这个filed我们才需要写property

View Code

 1 class Person
 2 {
 3     private string _name 
 4     public Person(string name)
 5     {
 6         _name = name;
 7     }
 8 }
 9 
10 
11 //或者
12 
13 class Person
14 {
15     private string _name 
16     public void Person(string name)
17     {
18         _name = name;
19     }
20 }

我们可以用Setter做更多事

View Code

 1 private int _dividend;
 2         public int Dividend
 3         {
 4             get { return _dividend; }
 5             set
 6             {
 7                 if (value == 0)
 8                 {
 9                     throw new ArgumentException("Can not set dividend to 0!");
10                 }
11             }
12         }

就算只有一个数据传入口，我们也建议用property，代替public的field

public string Name { get; set;}

一般只有property，event，methord是puublic的其他结构都做private

有的时候我们需要set bunch piece of propertys as unit，我们应该用一个方法去set property together

View Code

 1 public string Name { get; private set; }
 2         public string Address { get; private set; }
 3         public int ZipCode { get; private set; }
 4         public string State { get; private set; }
 5 
 6         public void SetName(string name)
 7         {
 8             Name = name;
 9         }
10         public void Move(string address, int zipCode, string state)
11         {
12             Address = address;
13             ZipCode = zipCode;
14             State = state;
15         }