越来越人性化的.Net 语言特性-技术开发专区

越来越人性化的.Net 语言特性

作者：(来自大可山博客) 编辑：胡铭娅 2007-08-24 15:06

【IT168 技术文档】
1. 自动属性(Automatic Properties)
相信C#开发者都曾遇到类似如下繁琐的get/set: (重复性的机械劳动啊!我曾经为此而心烦不已,后来干脆在VS中安装一个叫VSProperty的插件)

public class Person 
{ 

private string _trueName; 
private string _nickName; 
private int _age; 

public string TrueName 
{ 
get { 
return _trueName; 
} 
set { 
_trueName= value; 
} 
} 

public string NickName 
{ 
get { 
return _nickName; 
} 
set { 
_nickName= value; 
} 
} 

public int Age 
{ 

get { 
return _age; 
} 
set { 
_age = value; 
} 
} 
}

庆幸的是,在VS2008中有了改观,你可以这样了:

public class Person 
{ 
public string TrueName { get; set; } 
public string NickName { get; set; } 
public int Age { get; set; } 
}

2. 对象初始化器(Object Initializers):
之前初始化方式:


Person person = new Person(); 
person.TrueName = "Johson"; 
person.NickName = "大可山"; 
person.Age = 30;

现在你可以:

Person person = new Person { TrueName="Johnson", NickName = "大可山", Age=30 };

一行搞定,真是方便!

要加上通讯地址怎么办?
可以改成:

Person person = new Person 
{ 
TrueName = "Johnson", 
NickName = "大可山" 
Age = 30, 
Address = new Address { 
Street = "福田区深南大道6008号深圳报业集团", 
City = "深圳市", 
Province = "广东省", 
Zip = 518009 
} 
};

注意看Address也是新加的,直接new!

3.集合初始化器(Collection Initializers)
可以使用这样:

List<Person> people = new List<Person>(); 

people.Add( new Person { TrueName = "Johnson", NickName = "大可山", Age = 30 } ); 
people.Add( new Person { TrueName = "Bill", NickName = "比尔大哥", Age = 40 } ); 
people.Add( new Person { TrueName = "Jim", NickName = "小靓哥", Age = 20 } );

甚至可以这样:

List<Person> people = new List<Person> { 
new Person { TrueName = "Johnson", NickName = "大可山", Age = 30 }, 
new Person { TrueName = "Bill", NickName = "比尔大哥", Age = 40 }, 
new Person { TrueName = "Jim", NickName = "小靓哥", Age = 20 } 
};

(又少了几个Add)

一句话,越来越人性化了!

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