ChengDa_English/SGGL/BLL/Common/IDCardValid.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.UI.WebControls;
using Model;

namespace BLL
{
    public static class IDCardValid
    {
        /// <summary>
        /// 验证身份证号码
        /// </summary>
        /// <param name="Id">身份证号码</param>
        /// <returns>验证成功为True，否则为False</returns>
        public static bool CheckIDCard(string Id)
        {
            if (string.IsNullOrEmpty(Id))
            {
                return false;
            }
            if (Id.Length == 18)
            {
                bool check = CheckIDCard18(Id);
                return check;
            }
            else if (Id.Length == 15)
            {
                bool check = CheckIDCard15(Id);
                return check;
            }
            else
            {
                return false;
            }
        }

        #region 身份证号码验证
        /// <summary>
        /// 验证15位身份证号
        /// </summary>
        /// <param name="Id">身份证号</param>
        /// <returns>验证成功为True，否则为False</returns>
        private static bool CheckIDCard18(string Id)
        {
            long n = 0;
            if (long.TryParse(Id.Remove(17), out n) == false || n < Math.Pow(10, 16) || long.TryParse(Id.Replace('x', '0').Replace('X', '0'), out n) == false)
            {
                return false;//数字验证
            }
            string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
            if (address.IndexOf(Id.Remove(2)) == -1)
            {
                return false;//省份验证
            }
            string birth = Id.Substring(6, 8).Insert(6, "-").Insert(4, "-");
            DateTime time = new DateTime();
            if (DateTime.TryParse(birth, out time) == false)
            {
                return false;//生日验证
            }
            string[] arrVarifyCode = ("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 = Id.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 (arrVarifyCode[y] != Id.Substring(17, 1).ToLower())
            {
                return false;//校验码验证
            }
            return true;//符合GB11643-1999标准
        }

        /// <summary>
        /// 验证18位身份证号
        /// </summary>
        /// <param name="Id">身份证号</param>
        /// <returns>验证成功为True，否则为False</returns>
        private static bool CheckIDCard15(string Id)
        {
            long n = 0;
            if (long.TryParse(Id, out n) == false || n < Math.Pow(10, 14))
            {
                return false;//数字验证
            }
            string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
            if (address.IndexOf(Id.Remove(2)) == -1)
            {
                return false;//省份验证
            }
            string birth = Id.Substring(6, 6).Insert(4, "-").Insert(2, "-");
            DateTime time = new DateTime();
            if (DateTime.TryParse(birth, out time) == false)
            {
                return false;//生日验证
            }
            return true;//符合15位身份证标准
        }
        #endregion

        /// <summary>
        /// 根据身份证号码获取生日
        /// </summary>
        /// <param name="IDCard"></param>
        /// <returns></returns>
        public static DateTime? getBirthByIDCard(string IDCard)
        {
            DateTime? birth = null;
            if (!string.IsNullOrEmpty(IDCard))
            {
                string birthStr = string.Empty;
                if (IDCard.Length == 18)
                {
                    birthStr = IDCard.Substring(6, 8).Insert(6, "-").Insert(4, "-");

                }
                else if (IDCard.Length == 15)
                {
                    birthStr = IDCard.Substring(6, 6).Insert(4, "-").Insert(2, "-");
                }

                DateTime time = new DateTime();
                if (DateTime.TryParse(birthStr, out time))
                {
                    birth = time;
                }
            }

            return birth;
        }

        /// <summary>
        /// 获取年龄
        /// </summary>
        /// <param name="birthDate"></param>
        /// <param name="now"></param>
        /// <returns></returns>
        public static int CalculateAgeCorrect(DateTime birthDate)
        {
            DateTime now = DateTime.Now;
            int age = now.Year - birthDate.Year;
            if (now.Month < birthDate.Month || (now.Month == birthDate.Month && now.Day < birthDate.Day)) age--;
            return age;
        }
    }
}