第3部分-NET语言-C#-简介解析课件.ppt

1、.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET

2、.NET.NET.NET.NET第3部分 .NET语言-C#简介暨南大学计算机科学系黄战.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET

3、.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETOutlineC#C#程序样例 C#提供的类型 C#的控制结构 其他的C#特性.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.

4、NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#C#是一种有着和C相似语法的面向对象的语言Visual studio2005实现了2.0版的C#语言微软提供了一个极具优势的C#编译器，但它并非唯一选择.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NE

5、T.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETOutlineC#C#程序样例 C#提供的类型 C#的控制结构 其他的C#特性.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET

6、.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#程序样例.NET.NET.NET.NET.NET.NET.NET.N

7、ET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#程序样例任何C#程序均由

8、一个或多个类型构成C#接口是CTS接口的具体化身C#类是CTS类的具体化身C#程序是从一个名为Main的方法开始执行Console类的WriteLine方法向控制台（console）输出格式化结果.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.N

9、ET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETOutlineC#C#程序样例 C#提供的类型 C#的控制结构 其他的C#特性.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NE

10、T.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#提供的类型C#类型建立于CTS类型之上.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.N

11、ET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#提供的类型类和CTS类一样，一个C#类只能直接从一个类继承下来C#类内可包含字段、方法和属性属性强制对一个值的所有访问都必须通过get和set方法完成可以像访问字段一样访问属性类可以提

12、供构造函数，重写父类中的方法，并可对操作符进行重载.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NE

13、T.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#提供的类型接口,结构一个C#接口可以直接从另一个或多个接口继承而来C#结构就像是一种略微简化了的C#类.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.N

14、ET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#提供的类型数组和CTS数组一样，C#数组是一种引用类型C#数组可具有多个维度所有C#数组均可以访问标准的方法和属性.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NE

15、T.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#提供的类型委托和事件将一个指向方法的引用（reference to method）作为参数来传递，常常有其实用性）C#的委托提供了一个类型安全做法来传递指向方法的引用.NET.NET.NET.NET.NET.NET.NET.N

16、ET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#提供的类型委托和事件委托

17、可以和其他委托组合在一起lAn event handler doesnt return a value,i.e.,its return type is void.lAn event handler always takes two arguments.NET框架和C#为事件提供基于委托的支持用于事件的委托遵循特定的约定C#提供关键字event来声明事件.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NE

18、T.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#提供的类型委托和事件事件被初始化为nullEventSinks可以使用C#的+=操作符注册事件对事件的直接支持使得使用这个常见范型（paradigm）更为容易.NET.NET.NET.NET.NET.NET.N

19、ET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#提供的类型泛型.

20、NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.

21、NET.NET.NET.NETOutlineC#C#程序样例 C#提供的类型 C#的控制结构 其他的C#特性.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.N

22、ET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETC#的控制结构C#的控制结构具有现代高级语言的典型特性C#包括while、do/while、和forforeach循环.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NE

23、T.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETOutlineC#C#程序样例 C#提供的类型 C#的控制结构 其他的C#特性.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET

24、.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET其他的C#特性使用命名空间C#的Using语句可使我们轻松用命名空间内的各种东西.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET

25、.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET其他的C#特性异常处理异常机制为所有基于CLR的语言提供了完备的错误处理办法当错误发生，

26、便会引发一个异常（exception）可使用try/catch语句来处理异常不同的异常可以使用不同的方式来处理你也可以定义属于自己的异常.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET

27、.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET其他的C#特性使用特性C#程度可包含特性（attributes）你也可以定义自己的特性.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.

28、NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET其他的C#特性编写不安全代码C#开发人员依赖CLR垃圾回收机制（garbage collection）进行内存管理指针很难和垃圾回收机制融洽相处C#允许你使用指针编写出不安全代码（unsafe code）不安全代码有着许多束缚 .NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NE

29、T.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET其他的C#特性预处理.NET.NET.NET.NET.

30、NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NET.NETOutlineC#C#程序样例 C#提供的类型 C#的控制结构 其他的C#特性