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public static void  main(string[]  args)
{
     int[] arrayInt=new int[] {1,2,3,4,5}
     ArrayList  alist =ArrayList();
    //·½·¨Ò»
    foreach(int i in alist)
    {
        alist.Add(i);
     }   
    Console.WrliteLine(al[2].ToString());//Êä³ö
   //·½·¨¶þ ArrayList.Adapter ·½·¨ÊÇΪÌض¨µÄList ´´½¨ArrayList°ü×°
    ArrayList alist2=new ArrayList();
    alist2=ArrayList.Adapter(arrayInt);
    Console.WriteLine(alist2[2].ToString());//Êä³ö
   //·½·¨ÈýÄæÏòת»»
   Array resultArr=(int[] )alist2.ToArray(tyoeof(int));
  Console.WriteLine(resulArr.GetValue(2));//Êä³ö3
}
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string[] arrA = new string[]{"ѧ","Ï°","ÖÐ"};
ArrayList arrB = new ArrayList();
foreach(string a in arrA)
{
arrB.Add(a);
}
foreach (string b in arrB)
{
Console.Write(b);
}