C#中ArrayList类的使用方法

ArrayList元素的添加
using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Collections;//在C#中使用ArrayList必须引用Collections类namespace arrayD
 {
     class Program
     {
         static void Main(string[] args)
         {
             int[] arr = new int[] { 1,2,3,4,5};
             ArrayList list = new ArrayList(arr);
             Console.WriteLine("原始ArrayList类中的数据");
             foreach (int i in list)
             {
                 Console.Write(i+" ");
             }
             Console.WriteLine();
             Console.WriteLine("使用add方法添加");
             for (int i = 1; i < 5; i++)
             {
                 list.Add(i+arr.Length);
             }
             foreach (int i in list)
             {
                 Console.Write(i + " ");
             }
             Console.WriteLine();
             Console.WriteLine("使用Insert方法添加");
             list.Insert(5,6);
             foreach (int i in list)
             {
                 Console.Write(i + " ");
             }
             Console.WriteLine();
                   }
     }
 }
ArrayList元素的删除
using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Collections;namespace arrayDel
 {
     class Program
     {
         static void Main(string[] args)
         {
             int[] arr = new int[] { 1, 2, 3, 4, 5, 6 };
             ArrayList list = new ArrayList(arr);
             Console.WriteLine("删除前ArrayList元素");
             foreach (int i in list)
             {
                 Console.Write(i+" ");
             }
             Console.WriteLine();
             list.RemoveRange(0, 3);//使用RemoveRange方法删除指定的元素
             Console.WriteLine("删除后ArrayList元素");
             foreach (int i in list)
             {
                 Console.Write(i + " ");
             }
             Console.ReadLine();
         }
     }
 }

ArrayList元素的遍历
using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Collections;namespace arrayBl
 {
     class Program
     {
         static void Main(string[] args)
         {
             ArrayList arr = new ArrayList();
             arr.Add("C#学习");
             arr.Add("努力学习C#");
             foreach (string i in arr)
             {
                 Console.WriteLine(i);
             }
             Console.ReadLine();
         }
     }
 }
ArrayList元素的查找
using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Collections;namespace arrayCz
 {
     class Program
     {
         static void Main(string[] args)
         {
             int[] arr = new int[] { 1,2,3,4,5,6};
             ArrayList list = new ArrayList(arr);
             Console.WriteLine(list.IndexOf(3));//使用IndexOf方法查找，返回值为坐标
             Console.WriteLine(list.Contains(8));//使用Contains方法查找，返回值为True/False
             Console.ReadLine();
         }
     }
 }