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C#通过15位或者18位身份证判断性别年龄

news 2025/9/22 10:44:18

using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using System.Text;
using System.Threading.Tasks;namespace TestCode.CheckIDCardHelp
{/// <summary>/// 身份证验证帮助类/// 代码参考：https://www.jb51.net/article/270412.htm/// </summary>public class CheckIDCard1{/// <summary>/// 中国居民身份证18位和15位验证，成功则返回true,失败则返回false/// </summary>/// <param name="cardId"></param>/// <returns></returns>public static bool CheckCard(string cardId)//创建一个CheckCard方法用于检查身份证号码是否合法
        {if (cardId.Length == 18)        //如果身份证号为18位
            {return CheckCard18(cardId);//调用CheckCard18方法验证
            }else if (cardId.Length == 15)   //如果身份证号为15位
            {return CheckCard15(cardId);//调用CheckCard15方法验证
            }else{return false;}}/// <summary>/// 18位效验/// </summary>/// <param name="CardId"></param>/// <returns></returns>private static bool CheckCard18(string CardId)//CheckCard18方法用于检查18位身份证号码的合法性
        {long n = 0;bool flag = false;if (long.TryParse(CardId.Remove(17), out n) == false || n < Math.Pow(10, 16) || long.TryParse(CardId.Replace('x', '0').Replace('X', '0'), out n) == false){return false;//数字验证
            }string[] Myaddress = new string[]{ "11","22","35","44","53","12","23","36","45","54","13","31","37","46","61","14","32","41","50","62","15","33","42","51","63","21","34","43","52","64","65","71","81","82","91"};for (int kk = 0; kk < Myaddress.Length; kk++){if (Myaddress[kk].ToString() == CardId.Remove(2)){flag = true;}}if (!flag){return false;}string Mybirth = CardId.Substring(6, 8).Insert(6, "-").Insert(4, "-");DateTime Mytime = new DateTime();if (DateTime.TryParse(Mybirth, out Mytime) == false){return false;//生日验证
}string[] MyVarifyCode = ("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 = CardId.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 (MyVarifyCode[y] != CardId.Substring(17, 1).ToLower()){return false;//校验码验证
            }return true;//符合GB11643-1999标准
        }/// <summary>/// 15位效验/// </summary>/// <param name="CardId"></param>/// <returns></returns>private static bool CheckCard15(string CardId){long n = 0;bool flag = false;if (long.TryParse(CardId, out n) == false || n < Math.Pow(10, 14))return false;//数字验证string[] Myaddress = new string[]{ "11","22","35","44","53","12","23","36","45","54","13","31","37","46","61","14","32","41","50","62","15","33","42","51","63","21","34","43","52","64","65","71","81","82","91"};for (int kk = 0; kk < Myaddress.Length; kk++){if (Myaddress[kk].ToString() == CardId.Remove(2)){flag = true;}}if (!flag){return false;}string Mybirth = CardId.Substring(6, 6).Insert(4, "-").Insert(2, "-");DateTime Mytime = new DateTime();if (DateTime.TryParse(Mybirth, out Mytime) == false){return false;//生日验证
            }return true;//符合15位身份证标准
        }/// <summary>/// 15位转换18位身份证/// </summary>/// <param name="cardId"></param>public static string CheckCard15Convent18(string cardId){cardId = cardId.Trim();//获取输入的身份证号码//如果输入的是15位的身份证号码，需要将其转换成18位if (cardId.Length == 15){int[] w = new int[] { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1 };char[] a = new char[] { '1', '0', 'x', '9', '8', '7', '6', '5', '4', '3', '2' };string newID = "";int s = 0;newID = cardId.Insert(6, "19");for (int i = 0; i < 17; i++){int k = Convert.ToInt32(newID[i]) * w[i];s = s + k;}int h = 0;Math.DivRem(s, 11, out h);newID = newID + a[h];cardId = newID; //最后将转换成18位的身份证号码赋值
            }return cardId;}/// <summary>/// 根据身份证号获取出生日期/// </summary>/// <param name="IdNumber">身份证号</param>/// <param name="status">状态</param>/// <returns></returns>public static DateTime GetIdNumberMybirthDate(string IdNumber, out bool status){DateTime Mytime = new DateTime();string Mybirth = "";if (IdNumber.Trim().Length == 15)//如果输入的身份证号码是15位
            {Mybirth = ("19"+IdNumber.Substring(6, 6)).Insert(6, "-").Insert(4, "-");}else if (IdNumber.Trim().Length == 18)//如果输入的身份证号码是18位
            {Mybirth = IdNumber.Substring(6, 8).Insert(6, "-").Insert(4, "-");}if (DateTime.TryParse(Mybirth, out Mytime) == false){status = false;}else{status = true;}return Mytime;}/// <summary>/// 根据身份证号获取性别/// </summary>/// <param name="IdNumber">身份证号</param>/// <returns>1男 2女</returns>public static string GetIdNumberSex(string IdNumber){string sex = "未知";IdNumber = IdNumber.Trim();if (IdNumber.Trim().Length == 15)//如果输入的身份证号码是15位
            {int PP = Convert.ToInt32(IdNumber.Substring(14, 1)) % 2;//判断最后一位是奇数还是偶数if (PP == 0)//如果是偶数
                {sex = "女";//说明身份证号码的持有者是女性
                }else{sex = "男";//如果是奇数则身份证号码的持有者是男性
                }}else if (IdNumber.Trim().Length == 18)//如果输入的身份证号码是18位
            {int PP = Convert.ToInt32(IdNumber.Trim().Substring(16, 1)) % 2;//判断倒数第二位是奇数还是偶数if (PP == 0)//如果是偶数
                {sex = "女";//说明身份证号码的持有者是女性
                }else{sex = "男";//如果是奇数则身份证号码的持有者是男性
                }}return sex;}}
}

测试

    {//身份证效验List<string> cardIdList = new List<string>();cardIdList.Add("310110201305204568");cardIdList.Add("310110130520456");//cardIdList.Add("310110201305204568");//cardIdList.Add("360822199412073842");//cardIdList.Add("350123201105305507");//cardIdList.Add("110113195208207912");//cardIdList.Add("330503197211057977");//cardIdList.Add("130636197002107769");//cardIdList.Add("632324196506255363");//cardIdList.Add("50015519500516201X");//cardIdList.Add("511124199808086539");//cardIdList.Add("130682198902110034");//cardIdList.Add("500155195005161111");//cardIdList.Add("511124199808082222");//cardIdList.Add("130682198902113333");//18位身份证效验foreach (string cardId in cardIdList){bool status = false;Console.WriteLine($"\n 身份证号：{cardId}" +$"\n 验证结果：{TestCode.CheckIDCardHelp.CheckIDCard1.CheckCard(cardId)}" +$"\n 生日：{TestCode.CheckIDCardHelp.CheckIDCard1.GetIdNumberMybirthDate(cardId, out status)}"+$"\n 性别：{TestCode.CheckIDCardHelp.CheckIDCard1.GetIdNumberSex(cardId)}");Console.WriteLine("/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/");}//15位身份证效验}