朋友谈及身份证相关的信息,才了解到原来省份证号码中包含了年龄和性别。
这样在数据库中,就不必单独留字段存放它们了(不过,要根据具体情况来,要是读取频率较高,还是单独列出为好),这样顺带解决了年龄变更的问题。
程序仅仅为了实现这个功能,里面还是需要数据验证的,用户输入的信息,毕竟在猿类看来,都是“非法的”。废话不多说了,贴上我写的程序,还请路过的大神斧正:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks; namespace calculateAgeBirthdatSexDemo
{
public class Program
{
public static void Main(string[] args)
{
string identityCard = "32128119930718125X";//随便拼的,如有雷同,纯属搞怪哈
BirthdayAgeSex entity = new BirthdayAgeSex();
entity=GetBirthdayAgeSex(identityCard);
if (entity != null)
{
Console.WriteLine(entity.Birthday + "-----" + entity.Sex + "-----" + entity.Age);
}
Console.ReadLine();
} public static BirthdayAgeSex GetBirthdayAgeSex(string identityCard)
{
if (string.IsNullOrEmpty(identityCard))
{
return null;
}
else
{
if (identityCard.Length != && identityCard.Length != )//身份证号码只能为15位或18位其它不合法
{
return null;
}
} BirthdayAgeSex entity = new BirthdayAgeSex();
string strSex = string.Empty;
if (identityCard.Length == )//处理18位的身份证号码从号码中得到生日和性别代码
{
entity.Birthday = identityCard.Substring(, ) + "-" + identityCard.Substring(, ) + "-" + identityCard.Substring(, );
strSex = identityCard.Substring(, );
}
if (identityCard.Length == )
{
entity.Birthday = "" + identityCard.Substring(, ) + "-" + identityCard.Substring(, ) + "-" + identityCard.Substring(, );
strSex = identityCard.Substring(, );
} entity.Age = CalculateAge(entity.Birthday);//根据生日计算年龄
if (int.Parse(strSex) % == )//性别代码为偶数是女性奇数为男性
{
entity.Sex = "女";
}
else
{
entity.Sex = "男";
}
return entity;
} /// <summary>
/// 根据出生日期,计算精确的年龄
/// </summary>
/// <param name="birthDate">生日</param>
/// <returns></returns>
public static int CalculateAge(string birthDay)
{
DateTime birthDate=DateTime.Parse(birthDay);
DateTime nowDateTime=DateTime.Now;
int age = nowDateTime.Year - birthDate.Year;
//再考虑月、天的因素
if (nowDateTime.Month < birthDate.Month || (nowDateTime.Month == birthDate.Month && nowDateTime.Day < birthDate.Day))
{
age--;
}
return age;
} /// <summary>
/// 定义 生日年龄性别 实体
/// </summary>
public class BirthdayAgeSex
{
public string Birthday { get; set; }
public int Age { get; set; }
public string Sex { get; set; }
}
}
}
(ps:多年前写的了,今天看了下,确实很水啊。。。。)