本文实例讲述了C#实现身份证号码验证的方法。分享给大家供大家参考。具体实现方法如下:
随着现在互联网的发展,越来越多的注册用户的地方都用到了身份证,那么对于输入的身份证如何验证呢?看下面的代码,其实很简单。
主要注意的是,目前的身份证分为16和18位,然后分别验证校验位,省份,生日即可。
主要类如下:
/// <summary> /// 验证身份证号码类 /// </summary> public class IDCardValidation { /// <summary> /// 验证身份证合理性 /// </summary> /// <param name="Id"></param> /// <returns></returns> public bool CheckIDCard(string idNumber) { if (idNumber.Length == 18) { bool check = CheckIDCard18(idNumber); return check; } else if (idNumber.Length == 15) { bool check = CheckIDCard15(idNumber); return check; } else { return false; } } /// <summary> /// 18位身份证号码验证 /// </summary> private bool CheckIDCard18(string idNumber) { 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 } /// <summary> /// 16位身份证号码验证 /// </summary> private bool CheckIDCard15(string idNumber) { long n = 0; if (long.TryParse(idNumber, out n) == false || n < Math.Pow(10, 14)) { 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, 6).Insert(4, "-").Insert(2, "-"); DateTime time = new DateTime(); if (DateTime.TryParse(birth, out time) == false) { return false;//生日验证 } return true; } }
IDCardValidation card = new IDCardValidation();//从网上身份证大全找来的,验证结果为true bool result = card.CheckIDCard("522324197508045617");
Console.WriteLine(result.ToString()); //随便编的,验证结果为false result = card.CheckIDCard("612427199901281214");
Console.WriteLine(result.ToString());
Console.ReadLine();
希望本文所述对大家的C#程序设计有所帮助。