IEnumerable接口的使用方法

显示全部楼层 · 2014-8-26 17:39:48

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;

namespace demo4
{
public class Garage : IEnumerable
{
      Car[] carArrary=new Car[4];
      public Garage()
      {
         carArrary[0] = new Car("a",100);
         carArrary[1] = new Car("b", 200);
         carArrary[2] = new Car("c", 300);
         carArrary[3] = new Car("d", 400);
      }
      public IEnumerator GetEnumerator()
      {
         return this.carArrary.GetEnumerator();//返回本类的一个IEnumerator的遍历对象
      }

}
public class Car
{
      public string name;
      public int Speed;
      public Car(string name,int Speed)
      {
         this.name = name;
         this.Speed = Speed;
      }

}
}

using System;
using System.Collections;
using System.Linq;
using System.Text;

namespace demo4
{
class Program
{
      static void Main(string[] args)
      {
         Garage a = new Garage();
         foreach(Car b in a)
         {
            Console.WriteLine("{0} is going {1} MPH", b.name, b.Speed);
         }
         Console.WriteLine("GetEnumerator被定义为公开的，对象用户可以与IEnumerator类型交互，下面的结果与上面是一致的");
         IEnumerator i = a.GetEnumerator();
         while (i.MoveNext())
         {
            Car myCar = (Car)i.Current;
            Console.WriteLine("{0} is going {1} MPH", myCar.name, myCar.Speed);
         }
         Console.ReadLine();
         Console.ReadKey();
      }
}
}