C#實現身份證號碼驗證的方法

2020-01-24 02:16:19

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本文實例講述了C#實現身份證號碼驗證的方法。分享給大家供大家參考。具體實現方法如下：

隨著現在互聯網的發展，越來越多的注冊用戶的地方都用到了身份證，那么對于輸入的身份證如何驗證呢？看下面的代碼，其實很簡單。

主要注意的是，目前的身份證分為16和18位，然后分別驗證校驗位，省份，生日即可。

主要類如下：

復制代碼代碼如下:

/// <summary>  
/// 驗證身份證號碼類  
/// </summary>  
public class IDCardValidation  
{  
        /// <summary>  
        /// 驗證身份證合理性  
        /// </summary>  
        /// <param name="Id"></param>  
        /// <returns></returns>  
        public bool CheckIDCard(string idNumber)  
        {  
            if (idNumber.Length == 18)  
            {  
                bool check = CheckIDCard18(idNumber);  
                return check;  
            }  
            else if (idNumber.Length == 15)  
            {  
                bool check = CheckIDCard15(idNumber);  
                return check;  
            }  
            else  
            {  
                return false;  
            }  
        }  
  
  
        /// <summary>  
        /// 18位身份證號碼驗證  
        /// </summary>  
        private bool CheckIDCard18(string idNumber)  
        {  
            long n = 0;  
            if (long.TryParse(idNumber.Remove(17), out n) == false   
                || n < Math.Pow(10, 16) || long.TryParse(idNumber.Replace('x', '0').Replace('X', '0'), out n) == false)  
            {  
                return false;//數字驗證  
            }  
            string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";  
            if (address.IndexOf(idNumber.Remove(2)) == -1)  
            {  
                return false;//省份驗證  
            }  
            string birth = idNumber.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 = idNumber.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] != idNumber.Substring(17, 1).ToLower())  
            {  
                return false;//校驗碼驗證  
            }  
            return true;//符合GB11643-1999標準  
        }  
  
  
        /// <summary>  
        /// 16位身份證號碼驗證  
        /// </summary>  
        private bool CheckIDCard15(string idNumber)  
        {  
            long n = 0;  
            if (long.TryParse(idNumber, out n) == false || n < Math.Pow(10, 14))  
            {  
                return false;//數字驗證  
            }  
            string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";  
            if (address.IndexOf(idNumber.Remove(2)) == -1)  
            {  
                return false;//省份驗證  
            }  
            string birth = idNumber.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;  
        }   
}