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。