中國身份證號碼驗證，支持15,18位

原創

2020-02-21 12:39

今天在做身份證號碼驗證，發覺十五位的比較難驗證，網上找到以便驗證文章，未經驗證，保留下來以待今後驗證。。。

using ...System;

/**//// <summary>
/// Summary description for IDCardValid
/// </summary>
public class IDCardValid
...{
    public IDCardValid()
    ...{
        //
        // TODO: Add constructor logic here
        //
    }

    /**//// <summary>
    /// 驗證身份證號碼
    /// </summary>
    /// <param name="Id">身份證號碼</param>
    /// <returns>驗證成功爲True，否則爲False</returns>
    public static bool CheckIDCard(string Id)
    ...{
        if (Id.Length == 18)
        ...{
            bool check = CheckIDCard18(Id);
            return check;
        }
        else if (Id.Length == 15)
        ...{
            bool check = CheckIDCard15(Id);
            return check;
        }
        else
        ...{
            return false;
        }
    }

    身份證號碼驗證#region 身份證號碼驗證

    /**//// <summary>
    /// 驗證15位身份證號
    /// </summary>
    /// <param name="Id">身份證號</param>
    /// <returns>驗證成功爲True，否則爲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;//數字驗證
        }
        string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
        if (address.IndexOf(Id.Remove(2)) == -1)
        ...{
            return false;//省份驗證
        }
        string birth = Id.Substring(6, 8).Insert(6, "-").Insert(4, "-");
        DateTime time = new DateTime();
        if (DateTime.TryParse(birth, out time) == false)
        ...{
            return false;//生日驗證
        }
        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;//校驗碼驗證
        }
        return true;//符合GB11643-1999標準
    }

    /**//// <summary>
    /// 驗證18位身份證號
    /// </summary>
    /// <param name="Id">身份證號</param>
    /// <returns>驗證成功爲True，否則爲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;//數字驗證
        }
        string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
        if (address.IndexOf(Id.Remove(2)) == -1)
        ...{
            return false;//省份驗證
        }
        string birth = Id.Substring(6, 6).Insert(4, "-").Insert(2, "-");
        DateTime time = new DateTime();
        if (DateTime.TryParse(birth, out time) == false)
        ...{
            return false;//生日驗證
        }
        return true;//符合15位身份證標準
    }
    #endregion
}