C#通过15位或者18位身份证判断性别年龄

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
    }

测试结果