标签:c# ienumerable与ienumerator ienumerable ienumerator
通过一个例子来看
-------------------------------------------------------Student.cs
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Collections; namespace ConsoleApplication6 { public class Student:IEnumerable { //数组 public string[] s; //索引器 public int i; public Student(string[] str)//构造函数,初始化数组 { s = str; } public IEnumerator GetEnumerator()//迭代器 { return s.GetEnumerator(); } } }
-------------------------------------------------------StiAll.cs
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Collections; namespace ConsoleApplication6 { public class StiAll:IEnumerator { //student对象 Student s; //游标 int i = -1; public StiAll(Student ss)//构造函数,初始化student对象 { this.s = ss; } public object Current//获取当前的项(只读属性) { get { return s.s[i]; } } public bool MoveNext()//将游标的位置向前移动 { if (i<s.s.Length-1)//如果在s数组的长度范围之内就返回true { i++; return true; } else { return false; } } public void Reset()//初始化游标 { i = -1; } } }
-------------------------------------------------------主程序
Student s = new Student(new string[] { "吕蒙", "周泰", "黄盖" });//实例化Student对象 //第一种方式遍历 foreach (var item in s) { Console.WriteLine(item);//输出吕蒙,周泰,黄盖 } //第二种方式遍历 StiAll sa = new StiAll(s); while (sa.MoveNext()) { Console.WriteLine(sa.Current);//输出吕蒙,周泰,黄盖 } Console.ReadKey();
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IEnumerable接口与IEnumerator接口,布布扣,bubuko.com
标签:c# ienumerable与ienumerator ienumerable ienumerator
原文地址:http://962410314.blog.51cto.com/7563109/1529891