////// 性别 /// public enum enumIDCardSex { //女性 Woman = 0, //男性 Man = 1 } ////// 身份证检查工具 /// public class IDCardCheckTool { //各省市地区国家代码前两位代码是： //北京 11 吉林 22 福建 35 广东 44 云南 53 天津 12 黑龙江 23 //江西 36 广西 45 西藏 54 河北 13 上海 31 山东 37 海南 46 //陕西 61 山西 14 江苏 32 河南 41 重庆 50 辽宁 21 安徽 34 //甘肃 62 内蒙古 15 浙江 33 湖北 42 四川 51 青海 63 湖南 43 //贵州 52 宁夏 64 新疆 65 台湾 71 香港 81 澳门 82 国外 91 ////// 省份代码 /// //private static IListlistProvice = new List { // "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"}; /// /// 检查身份证是否有效 /// /// 身份证号码 /// 返回消息 ///public static bool CheckIDCardValid(string id, out string msg) { msg = string.Empty; bool ret = true; if (!CheckLength(id)) { msg = "身份证号码长度不正确!"; return false; } if (!CheckValidWords(id, out msg)) { return false; } switch (id.Length) { case 18: ret = CheckIDCard18(id, out msg); break; case 15: ret = CheckIDCard15(id, out msg); break; } return ret ; } /// /// 检查身份证是否有效 /// /// 身份证号码 /// 性别 /// 返回消息 ///public static bool CheckIDCardValid(string id, string sex, out string msg) { if (sex != "男" && sex != "女") { msg = "sex 参数传入错误"; return false; } msg = string.Empty; bool ret = true; if (!CheckLength(id)) { msg = "身份证号码长度不正确!"; return false; } if (!CheckValidWords(id, out msg)) { return false; } enumIDCardSex enumSex; if (sex == "男") enumSex = enumIDCardSex.Man; else enumSex = enumIDCardSex.Woman; switch (id.Length) { case 18: ret = CheckIDCard18(id, enumSex, out msg); break; case 15: ret = CheckIDCard15(id, enumSex, out msg); break; } return ret; } /// /// 检查身份证长度是否正确 /// /// ///private static bool CheckLength(string id) { if (id.Length != 15 && id.Length != 18) return false; else return true; } /// /// 检查15位身份证号码（包括性别） /// /// /// /// ///private static bool CheckIDCard15(string id, enumIDCardSex sex , out string msg) { msg = string.Empty; if (!CheckSex(id[id.Length - 1], sex)) { msg = "性别不匹配"; return false; } if(!CheckBirthFormat(id.Substring(6,6))) { msg = "出生日期格式不正确"; return false; } return true; } /// /// 检查15位身份证号码 /// /// /// ///private static bool CheckIDCard15(string id, out string msg) { msg = string.Empty; if(!CheckBirthFormat(id.Substring(6,6))) { msg = "出生日期格式不正确"; return false; } return true; } /// /// 检查18位身份证号码（包括性别） /// /// /// /// ///private static bool CheckIDCard18(string id, enumIDCardSex sex, out string msg) { msg = string.Empty; if (!CheckSex(id[id.Length - 2], sex)) { msg = "性别不匹配"; return false; } if (!CheckBirthFormat(id.Substring(6, 8))) { msg = "出生日期格式不正确"; return false; } if (!CheckVerificationCode(id)) { msg = "身份证号码错误"; return false; } return true; } /// /// 检查18位身份证号码 /// /// /// ///private static bool CheckIDCard18(string id, out string msg) { msg = string.Empty; if (!CheckBirthFormat(id.Substring(6, 8))) { msg = "出生日期格式不正确"; return false; } if (!CheckVerificationCode(id)) { msg = "身份证号码错误"; return false; } return true; } /// /// 检查省份代码是否存在 /// /// ///private static bool CheckProviceNumExist(string id) { IList listProvice = new List { "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"}; string proId = id.Substring(0, 2); if(!listProvice.Contains(proId)) return false; return true; } /// /// 检查是否存在非法字符 /// /// 身份证号 /// 输出信息 ///private static bool CheckValidWords(string id, out string msg) { StringBuilder sb = new StringBuilder(); bool ret = true; int index = 1; foreach (var p in id) {//88 和 120 分别对应的是 X 和 x if (index == id.Length) { if ((p < 48 || p > 57) && (p != 88 || p != 120)) { sb.AppendFormat("第{1}位存在非法字符{0}\r\n", p.ToString(), index.ToString()); ret = false; } } else { if (p < 48 || p > 57) { sb.AppendFormat("第{1}位存在非法字符{0}\r\n", p.ToString(), index.ToString()); ret = false; } } index++; } msg = sb.ToString(); return ret; } /// /// 检查身份证对应性别 /// 对应位 奇数为男性，偶数为女性 /// /// /// ///private static bool CheckSex(char c, enumIDCardSex sex) { int temp = Convert.ToInt32(c) % 2; if ((enumIDCardSex)temp != sex) { return false; } return true; } /// /// 检查出身日期格式 /// /// 身份证中原始生日字符串 ///private static bool CheckBirthFormat(string birthDay) { if (birthDay.Length == 8) { birthDay = birthDay.Insert(6, "-").Insert(4, "-"); } else if (birthDay.Length == 6) { birthDay = birthDay.Insert(4, "-").Insert(2, "-"); } DateTime dt; if (DateTime.TryParse(birthDay, out dt)) return true; else return false; } /// /// 检查校验值 /// /// 身份证号 ///private static bool CheckVerificationCode(string id) { string[] arrVarifyCode = ("1,0,x,9,8,7,6,5,4,3,2").Split(','); //每位数字对应的加权因子 IList Wi = new List { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 }; char[] Ai = id.Remove(17).ToCharArray(); int sum = 0; for (int i = 0; i <= Wi.Count - 1; i++) { sum += Convert.ToInt32(Ai[i].ToString()) * Wi[i]; } int y = -1; Math.DivRem(sum, 11, out y); if (arrVarifyCode[y] != id[17].ToString().ToLower()) { return false; } return true; } }