实现IEnumable以迭代对象示例
using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
namespace StaticTest
{
class Person //被迭代对象
{
public string fName;
public string lName;
public Person(string fName,string lName)
{
this.fName = fName;
this.lName = lName;
}
}
class People:IEnumerable //迭代对象的容器
{
private Person[] _people;
public People(Person[] person)
{
_people = new Person[person.Length];
for (int i = 0; i < person.Length; i++)
{
_people[i]=person[i];
}
}
IEnumerator IEnumerable.GetEnumerator()
{
return new PeopleEnum(_people);
}
}
class PeopleEnum : IEnumerator //迭代器
{
int position = -1;
public Person[] _person;
public PeopleEnum(Person[] person)
{
_person = person;
}
public bool MoveNext()
{
position++;
return (position < _person.Length);
}
public void Reset()
{
position = -1;
}
public object Current
{
get
{
try
{
return _person[position];
}
catch (IndexOutOfRangeException)
{
throw new InvalidOperationException();
}
}
}
}
class Program
{
static void Main(string[] args)
{
Person[] person = {
new Person("张","三"),new Person("李","四"),new Person("王","五")
};
People peo = new People(person);
foreach (Person pp in peo)
{
Console.WriteLine("fName:"+pp.fName+",lName:"+pp.lName);
}
}
}
}