List<int> list = new List<int>();

            list.Add();

            list.Add();

            list.Add();

            list.AddRange(new int[] { , , , , , });

            int[] nums=list.ToArray();  //集合转数组

            for (int i = ; i < list.Count; i++)

            {

                Console.WriteLine(list[i]);

            }

            char[] chs = new char[] { 'a','b','c'};

            List<char> listchar = chs.ToList();//char 类型数组转集合

            for (int i = ; i < list.Count; i++)

            {

                Console.WriteLine(listchar[i]);

            }

            Console.ReadLine();