C#验证身份证号码正确性的实例代码(收藏)

今天在qq空间看到一篇关于c#语言验证18位身份证号码的验证方法和实例代码，抽了些时间学习了一下，个人觉得还不错，所以把它记了下来，方便以后使用！

18位号码：

private static bool checkidcard18(string id)
    {
      long n = 0;
      if (long.tryparse(id.remove(17), out n) == false || n < math.pow(10, 16) || long.tryparse(id.replace('x', '0').replace('x', '0'), out n) == false)
      {
        return false;
      }
      string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
      if (address.indexof(id.remove(2)) == -1)
      {
        return false;
      }
      string birth = id.substring(6, 8).insert(6, "-").insert(4, "-");
      datetime time = new datetime();
      if (datetime.tryparse(birth, out time) == false)
      {
        return false;
      }
      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 = id.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] != id.substring(17, 1).tolower())
      {
        return false;
      }
      return true;//正确
    }

15位号码：

private static bool checkidcard15(string id)
    {
      long n = 0;
      if (long.tryparse(id, out n) == false || n < math.pow(10, 14))
      {
        return false;
      }
      string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
      if (address.indexof(id.remove(2)) == -1)
      {
        return false;
      }
      string birth = id.substring(6, 6).insert(4, "-").insert(2, "-");
      datetime time = new datetime();
      if (datetime.tryparse(birth, out time) == false)
      {
        return false;
      }
      return true;//正确
    } 

总结

以上所述是小编给大家介绍的c#验证身份证号码是否正确，希望对大家有所帮助