C#中ArrayList对象的遍历

static void Main(string[] args)
        {
            ArrayList al = new ArrayList();
            al.Add(1);
            al.Add(2);
            ///方法一
            foreach ( Object i in al)
            {
                Console.Write(i);
            }
           ////方法二
            IEnumerator IE = al.GetEnumerator();
            while (IE.MoveNext())
            {
                Console.Write(IE.Current.ToString());
            }
        }