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博客园 - WinkSky

索引 This is a test post by Windows Live Writer [提问]升级至SQL2005后续问题讨论. [提问]SQL2005关于点对点事务型映射 李开复:21世纪7种人才最抢手 SQL2000中奇怪的NULL值记录问题[求助] SQL2005常见性能问题排错演示代码[收藏] 上海Oracle高峰会感悟 Microsoft® Visual Studio® .NET™ 2003 Service Pack 1 存储过程编写小工具[收藏] ASP.NET(C#) 編碼規範[整理讨论] 颜色代码表[转] Gmail的图片签名[收藏] 精妙SQL语句收集[转载] [转载]61条面向对象设计的经验原则 需求工程16字方针 SQL各种写法的效率问题-转载自邹建专栏 SQL2000视图问题[请教] 一道终身受用的测试题
讨论String与string的区别.
WinkSky · 2006-07-17 · via 博客园 - WinkSky

    之前有查过2者之前的区别,不过时隔多日有点不是很清楚了,而且也没深入了解2者到底有何区别,今日再次查询网上讨论,主要也就有以下观点:  

  • string是c#中的类,String是.net Framework的类(在c# IDE中不会显示蓝色)
  • c# string映射为.net Framework的String
  • 如果用string,编译器会把它编译成String,所以如果直接用String就可以让编译器少做一点点工作
  • 如果使用c#,建议使用string,比较符合规范   
  • string始终代表 System.String(1.x) 或 ::System.String(2.0) ,String只有在前面有using System;的时候并且当前命名空间中没有名为String的类型(class、struct、delegate、enum)的时候才代表System.String
  • string是关键字,String不是,也就是说string不能作为类、结构、枚举、字段、变量、方法、属性的名称,而String可以