求助!用C#产生10个不重复的随机数怎么做?

Question

private Random rd = new Random();
        private List<int> li = new List<int>();
        public void f()
        {
            for (int i = 0; i < 10; ++i)
            {
                while (true) 
                {
                    int temp = rd.Next();
                    if (!li.Contains(temp))
                    {
                        li.Add(temp);
                        break;
                    }
                }                
            }
        }

Answer 1

for example:            ArrayList list = new ArrayList();
            Random rd = new Random();
            int count = 0;
            while (count < 10)
            {
                int number = rd.Next();
                if (!list.Contains(number))
                {
                    list.Add(number);
                    count++;
                }
            }

Answer 2

ArrayList al = new ArrayList();
            for (int i = 0; i < 10; i++)
                al.Add(i);
            Random rd = new Random();
            while (al.Count > 0)
            {
                int index = rd.Next(al.Count);
                Console.Write(al[index].ToString() + " ");
                al.RemoveAt(index);
            }