C#实现身份证号码验证的方法

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();

希望本文所述对大家的C#程序设计有所帮助。