获取不重复的随机数数组

在网上找的资料

int[] intArr = GetRandom1(1, 100000, 10000);

        /// <summary>
        /// 获取不重复的随机数数组
        /// </summary>
        /// <param name="minValue">最小值</param>
        /// <param name="maxValue">最大值</param>
        /// <param name="count">数量</param>
        /// <returns></returns>
        public static int[] GetRandom1(int minValue, int maxValue, int count)
        {

            Random rnd = new Random();
            int length = maxValue - minValue + 1;
            byte[] keys = new byte[length];
            rnd.NextBytes(keys);
            int[] items = new int[length];
            for (int i = 0; i < length; i++)
            {
                items[i] = i + minValue;
            }
            Array.Sort(keys, items);
            int[] result = new int[count];
            Array.Copy(items, result, count);
            return result;

        }