C# 编程指南
接口属性(C# 编程指南)
C#
public interface ISampleInterface
{
// Property declaration:
string Name
{
get;
set;
}
}
接口属性的访问器不具有体。因此,访问器的用途是指示属性是否为读写、只读或只写。
示例
在此例中,接口 IEmployee 具有读写属性 Name 和只读属性 Counter。Employee 类实现 IEmployee 接口并使用这两种属性。程序读取新雇员的姓名和雇员的当前编号,并显示雇员姓名和计算所得的雇员编号。
可以使用属性的完全限定名,它引用声明成员的接口。例如:
C#
string IEmployee.Name
{
get { return"Employee Name"; }
set { }
}
这被称为显式接口实现(C# 编程指南)。例如,如果 Employee 类实现两个接口 ICitizen 和 IEmployee,并且两个接口都具有 Name 属性,则需要显式接口成员实现。即,如下属性声明:
C#
string IEmployee.Name
{
get { return"Employee Name"; }
set { }
}
在 IEmployee 接口上实现 Name 属性,而下面的声明:
C#
string ICitizen.Name
{
get { return"Citizen Name"; }
set { }
}
在 ICitizen 接口上实现 Name 属性。
C#
interface IEmployee
{
string Name
{
get;
set;
}
int Counter
{
get;
}
}
publicclass Employee : IEmployee
{
publicstaticint numberOfEmployees;
privatestring name;
publicstring Name // read-write instance property
{
get
{
return name;
}
set
{
name = value;
}
}
privateint counter;
publicint Counter // read-only instance property
{
get
{
return counter;
}
}
public Employee() // constructor
{
counter = ++counter + numberOfEmployees;
}
}
class TestEmployee
{
staticvoid Main()
{
System.Console.Write("Enter number of employees: ");
Employee.numberOfEmployees = int.Parse(System.Console.ReadLine());
Employee e1 = new Employee();
System.Console.Write("Enter the name of the new employee: ");
e1.Name = System.Console.ReadLine();
System.Console.WriteLine("The employee information:");
System.Console.WriteLine("Employee number: {0}", e1.Counter);
System.Console.WriteLine("Employee name: {0}", e1.Name);
}
}
输入
210
Hazem Abolrous
示例输出
Enter number of employees: 210
Enter the name of the new employee: Hazem Abolrous
The employee information:
Employee number: 211
Employee name: Hazem Abolrous
(来源:msdn )