public const int Num = 50000;         //数目public const int MaxValue = 880296;   //最大数public const int MinValue = 1;    //最小数#region  产生随机数部分        /// 
        /// 随机数进行排序        /// 
        public int[] sort(int[] num)        {            int i, j, temp;            int n = num.Length;            for (i = 0; i < n - 1; i++)            {                for (j = i + 1; j < n; j++) /*注意循环的上下限*/                {                    if (num[i] > num[j])                    {                        temp = num[i];                        num[i] = num[j];                        num[j] = temp;                    }                }            }            return num;        }        /// 
        /// 判断随机数是否重复        /// 
        public int getNum(int[] arrNum, int tmp, int minValue, int maxValue, Random ra)        {            int n = 0;            while (n <= arrNum.Length - 1)            {                if (arrNum[n] == tmp) //利用循环判断是否有重复                {                    tmp = ra.Next(minValue, maxValue); //重新随机获取。                    getNum(arrNum, tmp, minValue, maxValue, ra);//递归:如果取出来的数字和已取得的数字有重复就重新随机获取。                }                n++;            }            return tmp;        }        /// 
        /// 获取随机数        /// 
        public Collection
     
       getRandomNum(int num, int minValue, int maxValue)        {            Random ra = new Random(unchecked((int)DateTime.Now.Ticks));            Collection
      
        strNum = new Collection
       
        ();            int[] arrNum = new int[num];            int tmp = 0;            for (int i = 0; i <= num - 1; i++)            {                tmp = ra.Next(minValue, maxValue); //随机取数                Console.WriteLine("排序前的：" + tmp);                arrNum[i] = getNum(arrNum, tmp, minValue, maxValue, ra); //取出值赋到数组中            }            this.sort(arrNum);            string RandomNum = "RandomNum.txt";            for (int i = 0; i < arrNum.Length; i++)            {                string s = Convert.ToString(arrNum[i]);                Console.WriteLine("排序后的：" + s);                using (FileStream fst1 = new FileStream(RandomNum, FileMode.Append))                {                    using (System.IO.StreamWriter _writer1 = new System.IO.StreamWriter(fst1))                    {                        _writer1.WriteLine("RowId = " + s);                        _writer1.Close();                        fst1.Close();                    }                }                strNum.Add(Convert.ToInt64(s));            }            return strNum;        }        #endregion  //调用中……  ParserStatuteByLawCase RandomStatuteId = new ParserStatuteByLawCase();   RandomStatuteId.getRandomNum(10000, 0, 700000);