中间带两位随机数的混合时间的加密串函数

    private static int RollDiceFunc(int sendnumber)
        {
            byte[] randnumbers = new byte[1];
            RNGCryptoServiceProvider Gen = new RNGCryptoServiceProvider();

            Gen.GetBytes(randnumbers);

            int rand = Convert.ToInt32(randnumbers[0]);
            return (rand % sendnumber)+1;
        }

 

 

private string addFrontZero(string str, int len)
        {
            while (str.Length < len)
            {
                str = "0" + str;
            }
            return str;
        }

 

 

调用：

_payNO = addFrontZero(CustomerId.ToString(), 7) + "9" + DateTime.Now.ToString("yyMMddHHmmss");