C#实现身份证号码验证的方法

• Z时代
• 2024-01-10
• 分类：综合

本文实例讲述了C#实现身份证号码验证的方法。分享给大家供大家参考。具体实现方法如下：

随着现在互联网的发展，越来越多的注册用户的地方都用到了身份证，那么对于输入的身份证如何验证呢？看下面的代码，其实很简单。

主要注意的是，目前的身份证分为16和18位，然后分别验证校验位，省份，生日即可。

主要类如下：

/// <summary>  
/// 验证身份证号码类  
/// </summary>  
public class IDCardValidation  
{  
        /// <summary>  
        /// 验证身份证合理性  
        /// </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位身份证号码验证  
        /// </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;//数字验证  
            }  
            string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";  
            if (address.IndexOf(idNumber.Remove(2)) == -1)  
            {  
                return false;//省份验证  
            }  
            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 = 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;//校验码验证  
            }  
            return true;//符合GB11643-1999标准  
        }  
  
  
        /// <summary>  
        /// 16位身份证号码验证  
        /// </summary>  
        private bool CheckIDCard15(string idNumber)  
        {  
            long n = 0;  
            if (long.TryParse(idNumber, out n) == false || n < Math.Pow(10, 14))  
            {  
                return false;//数字验证  
            }  
            string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";  
            if (address.IndexOf(idNumber.Remove(2)) == -1)  
            {  
                return false;//省份验证  
            }  
            string birth = idNumber.Substring(6, 6).Insert(4, "-").Insert(2, "-");  
            DateTime time = new DateTime();  
            if (DateTime.TryParse(birth, out time) == false)  
            {  
                return false;//生日验证  
            }  
            return true;  
        }   
}

测试调用：

IDCardValidation card = new IDCardValidation(); 

//从网上身份证大全找来的，验证结果为true 

bool result = card.CheckIDCard("522324197508045617"); 

Console.WriteLine(result.ToString()); 

//随便编的，验证结果为false 

result = card.CheckIDCard("612427199901281214"); 

Console.WriteLine(result.ToString()); 

Console.ReadLine();

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