身份证号码验证

  private bool CheckIDCard18(string idNumber)
    {
        if (idNumber.Length < 18) return false;
        long n = 0;
        if (long.TryParse(idNumber.Remove(17), out n) == false
            || n < Math.Pow(10, 16) || long.TryParse(idNumber.Replace('x', '0').Replace('X', '0'), out n) == false)
        {
            return false;//数字验证  
        }
        string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
        if (address.IndexOf(idNumber.Remove(2)) == -1)
        {
            return false;//省份验证  
        }
        string birth = idNumber.Substring(6, 8).Insert(6, "-").Insert(4, "-");
        DateTime time = new DateTime();
        if (DateTime.TryParse(birth, out time) == false)
        {
            return false;//生日验证  
        }
        string[] arrVarifyCode = ("1,0,x,9,8,7,6,5,4,3,2").Split(',');
        string[] Wi = ("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2").Split(',');
        char[] Ai = idNumber.Remove(17).ToCharArray();
        int sum = 0;
        for (int i = 0; i < 17; i++)
        {
            sum += int.Parse(Wi[i]) * int.Parse(Ai[i].ToString());
        }
        int y = -1;
        Math.DivRem(sum, 11, out y);
        if (arrVarifyCode[y] != idNumber.Substring(17, 1).ToLower())
        {
            return false;//校验码验证  
        }
        return true;//符合GB11643-1999标准  
    }