C#属性和方法
#defineDEBUGusingSystem;usingSystem.Diagnostics;publicclassDemo{[Conditional("DEBUG")]publicstaticvoidMessage(
C#进阶
C#命名空间使用关键字
usingSystem;usingfirst_space;usingsecond_space;namespacefirst_space{classabc{publicvoidfunc(){Console.WriteLine("In
C#多个局部变量声明
usingSystem;classDemo{staticvoidMain(){inta=20,b=70,c=40,d=90;Console.WriteLine("{0}{1}{2}{3}",a,b,c,d);}}
C#其他运算符
usingSystem;namespaceOperatorsAppl{classProgram{staticvoidMain(string[]args){/*exampleofsizeofoperator*/Console.WriteLin
C#使用命名空间
usingSystem;namespacefirst_space{classnamespace_cl{publicvoidfunc(){Console.WriteLine("Insidefirst_space");}}}
C#将指针作为参数传递不安全代码
usingSystem;namespaceUnsafeCodeApplication{classTestPointer{publicunsafevoidswap(int*p,int*q){inttemp=*p;*p=*q;*q=temp;}
C#文件I/O
usingSystem;usingSystem.IO;namespaceFileIOApplication{classProgram{staticvoidMain(string[]args){FileStreamF=newFileStrea
C#抽象与虚拟动态多态
usingSystem;namespacePolymorphismApplication{classShape{protectedintwidth,height;publicShape(inta=0,intb=0){width=a;heig
C#类的静态成员
usingSystem;namespaceStaticVarApplication{classStaticVar{publicstaticintnum;publicvoidcount(){num++;}publicintgetNum(){r
C#使用递归计算数字的和
usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;namespaceDemo{classMyApplication{staticvoi
C#检查给定字符串中是否存在某子字符串
usingSystem;publicclassDemo{publicstaticvoidMain(){stringstr1="United",str2="Uni";boolres;res=str1.C
C#数组类
usingSystem;namespaceArrayApplication{classMyArray{staticvoidMain(string[]args){int[]list={34,72,13,44,25,30,10};int[]te
C#内置的异常
usingSystem;namespaceMyErrorHandlingApplication{classDivNumbers{intresult;DivNumbers(){result=0;}publicvoidmyDivision(in
C#按位运算符
usingSystem;namespaceOperatorsAppl{classProgram{staticvoidMain(string[]args){inta=60;/*60=00111100*/intb=13;/*13=0000110
C#双端队列类
usingSystem;publicabstractclassVehicle{publicabstractvoiddisplay();}publicclassBus:Vehicle{publicoverridevoiddisplay(){C
C#转换字符大小写
usingSystem;usingSystem.Collections.Generic;usingSystem.Text;namespaceDemo{classMyApplication{staticvoidMain(string[]arg
C#类成员函数
usingSystem;namespaceBoxApplication{classBox{privatedoublelength;//Lengthofaboxprivatedoublebreadth;//Breadthofaboxpriva
C#多重继承
usingSystem;namespaceInheritanceApplication{classShape{publicvoidsetWidth(intw){width=w;}publicvoidsetHeight(inth){heigh
C#封装内部访问修饰符
usingSystem;namespaceRectangleApplication{classRectangle{//membervariablesinternaldoublelength;internaldoublewidth;doubl
C#析构函数
usingSystem;namespaceLineApplication{classLine{privatedoublelength;//LengthofalinepublicLine(){//constructorConsole.Writ