C# 编码总结

BankCustomer   c;
c=newBankCustomer();
 

表达式与运算符:

逻辑运算符:&逻辑AND       |逻辑OR

前置和后置自加自减运算符: i++

Check和uncheck运算符

is运算符

sizeof运算符

 

流控制：if语句，switch语句，循环for语句

 

声明：

Int []numbers;
Int []numbers=new int[5];
Int []numbers=new int [5]  {1,2,3,4,5};
Int []numbers={1,2,3,4,5};

 

枚举：                                                              

Public enum Weekdays
{
Monday=1,
Tuesday=2,
Wednesday=3,
Thusday=4,
Friday=5
}

 

对象引用：                                    

构造函数：                                                     

ClassEmployee
{
}

调用构造函数：

PublicEmployee(int weeklySalary,int numberOfWeeks)
:this(weeklySalry*numberofWeeks)
{
 
}

 

Idisposable 接口：

Class ResourceGobbler:Idisposable
{
Public void Dispose
 
{
 
}
 
}

声明Assign方法：

ClassPoint
{
Int  x;
Int y;
Void Assign()
{
System Console.WriteLine("");
x=int Parse(System.Console.ReadLine());
y=int Parse(System.Console.Readline());
}
}
 

 

方法重载：                                                                        

Class BillPayment
{
Void PayBill(int telephoneNumber)
{
 
}
Void PayBill(lone consumerNumber)
{
 
}
}
 

 

导入命名空间：                                                 

UsingTeamx.BusinessTier;
Customerc;
c=newCusyomer();

 

 

基类：

Class Base
{
Intbasevar
Base_fun1()
{
 
}
}

派生类：

Class Derived:Base
{
Intderivedvars;
Derived_fun1()
{
 
}
}
 

 

基类：

Class Base
{
Intbasevar
GetInfo()
{
 
}
}

派生类：

Class Derived:Base
{
Intderivedvars;
Override GetInfo()
{
 
}
}
 
Publicvirtual func()
{
Console.WriteLine();
}
 

 

抽象类：                                                                 

Abstract class Base
{
Int basevar
Abstract void base_fun1(parameters);
}

密封类用sealed关键字

 

多态：                                                           

<pre name="code" class="csharp">Public int Calculate(int x, int y)
Public double Calculate(double x, double y)
 

 

多态：                                                           

Public int Calculate(int x, int y)
Public double Calculate(double x, double y)

 

 

定义索引器：                           

Struct Vector
{
}

 

 

查找字符串类型;

 

Stringmystring="";
IntintPosition;
intPosition=mystring.Indexof("");
 

异常处理：                                          

Try
{
//可能发生的错误代码
}
Catch
{
//错误处理
}
Finally
{
//资源清理
}
 

 

数据转换：

Short g = 265;
Byteh=(byte) g;
Console.WrightLine("h="+h.Tostring()+"\n");
 

委托类型的变量可以接受的数值只能是一个函数