/// <summary> /// 身份证 /// </summary> [Serializable] public class IDCard { /// <summary> /// 身份证号 /// </summary> public string IDCardNum { get; set; } /// <summary> /// 行政区 /// </summary> public string Canton { get; private set; } /// <summary> /// 出生日期 /// </summary> public DateTime Birthday { get; private set; } /// <summary> /// 性别(0-女;1-男) /// </summary> public int Gander { get; private set; } /// <summary> /// 是否为合法身份证号 /// </summary> public bool IsIDCard { get; private set; } public IDCard() { } public IDCard(string IDnumber) { this.IDCardNum = IDnumber; } /// <summary> /// /// </summary> /// <param name="number"></param> /// <returns></returns> public static IDCard Parse(string number) { IDCard idCard = new IDCard(number); const int s5bits = 15; const int s8bits = 18; #region 15位 if (number.Length == s5bits) //15位的处理 { //检查输入是否为数字 for (int i = 0; i < number.Length; i++) { if ((number[i] < ‘0‘) || (number[i] > ‘9‘)) { throw new FormatException("身份证号错误"); } } //出生日期 string birthday = "19" + number.Substring(6, 6); string year = birthday.Substring(0, 4); string month = birthday.Substring(4, 2); string day = birthday.Substring(6, 2); birthday = string.Format("{0}-{1}-{2}", year, month, day); DateTime date = new DateTime(); if (DateTime.TryParse(birthday, out date)) { idCard.Birthday = date; } else { throw new InvalidCastException("身份证号出生日期错误"); } //性别 if ((number[s5bits - 1] == ‘0‘) || (number[s5bits - 1] % 2 == 0)) { idCard.Gander = 0; // 女 } else { idCard.Gander = 1; // 男 } idCard.IsIDCard = true; return idCard; } #endregion #region 18位 else if (number.Length == s8bits) //18位的处理 { // 检查前17位是否为数字 for (int i = 0; i < number.Length -1; i++) { if ((number[i] < ‘0‘) || (number[i] > ‘9‘)) { throw new FormatException("身份证号错误"); } } char end = number[s8bits - 1]; //最后一位 //最后1位是x转成大写X if (end == ‘x‘) { end = ‘X‘; number = number.Substring(0, s8bits - 1) + end; } if (!(end == ‘X‘ || (end >= ‘0‘ && end <= ‘9‘))) { throw new FormatException("身份证号错误"); } /// 校验 int num = 0; char proof; for (int i = 17; i > 0; i--) { num = num + (int)(Math.Pow(2, i) % 11) * (number[17 - i] - 48); } num %= 11; switch (num) { case 0: proof = ‘1‘; break; case 1: proof = ‘0‘; break; case 2: proof = ‘X‘; break; default: proof = (char)(12 - num + 48); break; } if (end != proof) //最后一位与校验码不符 { throw new FormatException("身份证号错误"); } //出生日期 string birthday = number.Substring(6, 8); string year = birthday.Substring(0, 4); string month = birthday.Substring(4, 2); string day = birthday.Substring(6, 2); birthday = string.Format("{0}-{1}-{2}", year, month, day); DateTime date = new DateTime(); if (DateTime.TryParse(birthday, out date)) { idCard.Birthday = date; } else { throw new InvalidCastException("身份证号出生日期错误"); } //行政区 idCard.Canton = number.Substring(0, 6); //性别 if ((number[16] == ‘0‘) || (number[16] % 2 == 0)) { idCard.Gander = 0; //女 } else { idCard.Gander = 1; //男 } idCard.IsIDCard = true; return idCard; } #endregion else { throw new FormatException("无效的身份证号码位数:" + number.Length); } } public static bool TryParse(string number, out IDCard card) { IDCard idCard = null; bool isIdCard = true; try { Parse(number); } catch (Exception) { isIdCard = false; } card = idCard; return isIdCard; } }
原文地址:https://www.cnblogs.com/fanying/p/10919038.html
时间: 2024-10-08 06:12:01