c# 随机身份证生成器

RandomIDCardGenerator.cs

public class RandomIdCardUtil
{
    [Test]
    public void generate()
    {
        for (int i = 0; i < 100; i++)
        {
            var cusId = RandomIDCardGenerator.GetRandomCard(14, 14);
            Console.WriteLine($"{cusId.Substring(0, 6)}" +
                              $"-{cusId.Substring(6, 4)}" +
                              $"-{cusId.Substring(10, 2)}" +
                              $"-{cusId.Substring(12, 2)}" +
                              $"-{cusId.Substring(14)}");
        }
    }
}

public static class RandomIDCardGenerator
{
    /*
     * 11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",  
     * 21:"辽宁",22:"吉林",23:"黑龙江",
     * 31:"上海",32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",
     * 41:"河南",42:"湖北",43:"湖南",44:"广东",45:"广西",46:"海南",
     * 50:"重庆",51:"四川",52:"贵州",53:"云南",54:"西藏",
     * 61:"陕西",62:"甘肃",63:"青海",64:"宁夏",65:"新疆",
     * 71:"台湾",81:"香港",82:"澳门",91:"国外"
     */
    private static String[] PROVINCES =
    {
        "11", "12", "13", "14", "15",
        "21", "22", "23",
        "31", "32", "33", "34", "35", "36", "37",
        "41", "42", "43", "44", "45", "46",
        "50", "51", "52", "53", "54",
        "61", "62", "63", "64", "65",
        "71", "81", "82"
    };

    private static String[] CITYS =
    {
        "01", "02", "03", "04", "05", "06", "07", "08", "09", "10",
        "21", "22", "23", "24", "25", "26", "27", "28"
    };

    private static String[] COUNTYS =
    {
        "01", "02", "03", "04", "05", "06", "07", "08", "09", "10",
        "21", "22", "23", "24", "25", "26", "27", "28", "29", "30",
        "31", "32", "33", "34", "35", "36", "37", "38"
    };

    private static char[] CHECKS_CODE = { '1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2' };

    private static int[] POWER_LIST = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 };
    // 18位身份证号码各位的含义:
    // 1-2位省、自治区、直辖市代码；
    // 3-4位地级市、盟、自治州代码；
    // 5-6位县、县级市、区代码；
    // 7-14位出生年月日，比如19670401代表1967年4月1日；
    // 15-17位为顺序号，其中17位（倒数第二位）男为单数，女为双数；
    // 18位为校验码，0-9和X。
    // 作为尾号的校验码，是由把前十七位数字带入统一的公式计算出来的，
    // 计算的结果是0-10，如果某人的尾号是0－9，都不会出现X，但如果尾号是10，那么就得用X来代替，
    // 因为如果用10做尾号，那么此人的身份证就变成了19位。X是罗马数字的10，用X来代替10

    public static String GetRandomCard(int minAge, int maxAge)
    {
        Random random = new Random();
        // 随机生成省、自治区、直辖市代码 1-2
        String province = PROVINCES[random.Next(PROVINCES.Length - 1)];

        // 随机生成地级市、盟、自治州代码 3-4
        String city = CITYS[random.Next(CITYS.Length - 1)];

        // 随机生成县、县级市、区代码 5-6
        String county = COUNTYS[random.Next(COUNTYS.Length - 1)];

        // 随机生成出生年月 7-14
        String birth = RandomBirthDay(minAge, maxAge);

        // 随机生成顺序号 15-17
        String no = random.Next(999).ToString().PadLeft(3, '0');

        // 随机生成校验码 18
        String tmp = province + city + county + birth + no;
        char[] tmpArray = tmp.ToCharArray();
        int power = 0;
        for (int i = 0; i < tmpArray.Length; i++)
        {
            power += (tmpArray[i] - '0') * POWER_LIST[i];
        }

        char lastCheckChar = CHECKS_CODE[power % 11];

        return tmp + lastCheckChar;
    }

    private static String RandomBirthDay(int minAge, int maxAge)
    {
        int span = maxAge - minAge;
        span = Math.Abs(span);
        if (span == 0)
            span = 1;
        int random = new Random().Next(span * 365);
        var birthDay = DateTime.Today.AddYears(-minAge).AddDays(-random);
        return birthDay.ToString("yyyyMMdd");
    }
}