arraylist的使用方法

显示全部楼层 · 2014-8-27 11:32:40

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

namespace demo5
{
class Program
{
      static void Main(string[] args)
      {
         ArrayList test = new ArrayList();
         //test.Add(new TestArrary("demo", 20));
         //test.Add(new TestArrary("demo1", 21));
         int[] a = new int[3] { 1,2,3};//这个类实现了icollection接口
         test.Add("a");
         test.Add("b");
         test.Add("c");
         string [] string_ary=new string[3];
         test.CopyTo(string_ary);
         Console.WriteLine("复制成功");
         foreach (string string_var in string_ary)
         {
            Console.WriteLine(string_var);
         }

         string [] string_ary1=new string[3];
         test.CopyTo(string_ary1,0);//从目标数组的index开始复制
         Console.WriteLine("复制成功");

         string [] string_ary2=new string[6];
         test.CopyTo(0,string_ary2,2,3);//
         Console.WriteLine("复制成功");
         foreach(string string_ary2_var in string_ary2)
         {
            Console.WriteLine(string_ary2_var);
         }
         // test.AddRange(a);
         //foreach(TestArrary b in test)
         //{
         // Console.WriteLine(b.name.ToString());
         //}

         //Console.WriteLine("第一个元素为:" + test[0]);
         //test.Clear();
         //Console.WriteLine("里面的数量为："+test.Count+"个元素");
         if (test.Contains(new TestArrary("demo", 20)))//因这两个对象不是同一个对象了
         {
            Console.WriteLine("存在");
         }
         else
         {
            Console.WriteLine("不存在");
         }
         Console.ReadKey();
      }
}
}

Testing_C# · 2014-8-27 11:37:43

foreach(string string_GetRange in test.GetRange(0,2)) { Console.WriteLine(string_GetRange); } Console.ReadKey();