C#基础题求大佬给数组排个降序

        int[] ageArray = { 28, 76, 38, 67, 45, 18 };
        ArrayList al = new ArrayList();

        for (int i = 0; i < ageArray.Length; i++)
        {
            al.Add(ageArray[i]);
        }
            //
            Console.WriteLine("数组列表的元素有：");
        foreach (object m in al)
        {
            Console.WriteLine(m);
        }
        al.Remove(2);
        al.Reverse();
                    //在这里把数组排成降序
        Console.WriteLine("降序后数组列表");
        foreach (object m in al)
        {
            Console.WriteLine(m);
        }
        Console.ReadLine();

你都用上ArrayList了直接用Sort啊。