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 == )
             {
                 bool check = CheckIDCard18(idNumber);
                 return check;
             }
             else if (idNumber.Length == )
             {
                 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 = ;
             if (long.TryParse(idNumber.Remove(), out n) == false
                 || n < Math.Pow(, ) || long.TryParse(idNumber.Replace('x', '').Replace('X', ''), out n) == false)
             {
                 return false;//数字验证
             }
             string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
             if (address.IndexOf(idNumber.Remove()) == -)
             {
                 return false;//省份验证
             }
             string birth = idNumber.Substring(, ).Insert(, "-").Insert(, "-");
             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().ToCharArray();
             int sum = ;
             for (int i = ; i < ; i++)
             {
                 sum += int.Parse(Wi[i]) * int.Parse(Ai[i].ToString());
             }
             int y = -;
             Math.DivRem(sum, , out y);
             if (arrVarifyCode[y] != idNumber.Substring(, ).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 = ;
             if (long.TryParse(idNumber, out n) == false || n < Math.Pow(, ))
             {
                 return false;//数字验证
             }
             string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
             if (address.IndexOf(idNumber.Remove()) == -)
             {
                 return false;//省份验证
             }
             string birth = idNumber.Substring(, ).Insert(, "-").Insert(, "-");
             DateTime time = new DateTime();
             if (DateTime.TryParse(birth, out time) == false)
             {
                 return false;//生日验证
             }
             return true;
         }
 }

 测试调用：

复制代码 代码如下:

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(""); 

Console.WriteLine(result.ToString());
 //随便编的，验证结果为false
 result = card.CheckIDCard(""); 

Console.WriteLine(result.ToString()); 

Console.ReadLine();

测试调用：

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(""); 

Console.WriteLine(result.ToString());
 //随便编的，验证结果为false
 result = card.CheckIDCard(""); 

Console.WriteLine(result.ToString()); 

Console.ReadLine();