台湾身份证验证并与性别联动
1、<asp:Label runat="server" ID="Label_SUB1_F15" CssClass="liLeft" title="">身份證號<font color="red"> *</font></asp:Label><div
class="contentContainer">
<asp:TextBox ID="TextBox_SUB1_F15" runat="server" MaxLength="10" onblur="ChkIdNo(this);"
CssClass="pub_clsInputEdit TextBoxElement IDNO elementDisplayYes">
</asp:TextBox></div>
<asp:Label runat="server" ID="Label_SUB1_F17" CssClass="liLeft" title="">性別<font color="red"> *</font></asp:Label><div
class="contentContainer">
<asp:RadioButtonList ID="RadioButtonList_SUB1_F17" runat="server" CssClass="liRight RadioButtonListElement Sex"
RepeatDirection="Horizontal" RepeatLayout="Flow" Enabled="true">
</asp:RadioButtonList>
</div>
2、 <script language="javascript" type="text/javascript">
//身份證號碼验证及与性別聯動
function ChkIdNo(obj) {
var txtVal = obj.value;
if (txtVal != '') {
if (txtVal.length < 10) {
alert("身份證號碼必須為10位！");
obj.focus();
obj.select();
return false;
}
else {
//检查是否存在
var xmlURL = "JsonData.ashx?t=IV&val=" + txtVal;
$.get(xmlURL, {}, function(result) {
if (result == "N") {
alert(document.getElementById("<%=IdErr.ClientID%>").innerText); //不正确
//alert("身份證號碼不合規則！");
obj.focus();
}
else {
obj.value = obj.value.toUpperCase();
}
}, "text");
}
if (txtVal != null) {
var secondChar = txtVal.substr(1, 1);
if (secondChar != "") {
if (secondChar == '1') {
var radioList = document.getElementById("<%=RadioButtonList_SUB1_F17.ClientID%>").getElementsByTagName("input");
radioList[0].checked = true;
}
else {
var radioList = document.getElementById("<%=RadioButtonList_SUB1_F17.ClientID%>").getElementsByTagName("input");
radioList[1].checked = true;
}
}
}
}
}
</script>
3、添加一个JsonData.ashx文件
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Benq.Flower.Form.CARRFORM7_V8.DAL;
namespace Benq.Flower.Form.CARRFORM7_V8
{
public class JsonData : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
CARRFORM7 C7 = new CARRFORM7_V8.DAL.CARRFORM7();
context.Response.ContentType = "text/plain";
string returnValue = string.Empty;
if (context.Request.QueryString["t"] != null)
{
string t = context.Request.QueryString["t"];
string val = context.Request.QueryString["val"];
if (t.Equals("IV"))
{
#region
if (C7.ValidateIdentityID(val))
{
context.Response.Write("Y");
}
else
{
context.Response.Write("N");
}
#endregion
}
}
context.Response.End();
}
public bool IsReusable
{
get
{
return true;
}
}
}
}
4、验证规则
#region
public bool ValidateIdentityID(string IdentityID)
{
bool valid = false;
//先通过正则表达式验证基本格式
if (new Regex(@"[A-Z][1-2]\d{8}").Match(IdentityID).Success)
{
//如果格式正确，再验证最后一位检查码
valid = ValidateCheckCharacter(IdentityID);
}
return valid;
}
//验证检查码是否正确。正确返回true, 否则返回false
private bool ValidateCheckCharacter(string IdentityID)
{
bool valid = false;
int digitalCharacter, times, multiplyResult, modulos, remainder, digitalCheckCharacter;
string checkCharacter, checkCharacterInID;
//1.把区域码转换成数字
string regionPrefix = IdentityID.Substring(0, 1).ToUpper();
string regionDigital = this.GetRegionDigitalString(regionPrefix);
string digitalIdentityID = regionDigital + IdentityID.Remove(0, 1);
//2.根据ID前9位（10位数字）产生正确的检查码
multiplyResult = 0;
//2.1乘权数相加
for (int i = 0; i < digitalIdentityID.Length - 1; i++)
{
digitalCharacter = int.Parse(digitalIdentityID.Substring(i, 1));
//从第一位到第10位的权数分别为：1,9,8,7,6,5,4,3,2,1
if (i == 0)
{
times = 1;
}
else
{
times = 10 - i;
}
//加权乘再累加
multiplyResult += digitalCharacter * times;
}
//2.2除以模數10取其餘數
modulos = 10;
remainder = multiplyResult % modulos;
if (remainder == 0)
{
checkCharacterInID = IdentityID.Substring(9, 1);
if (remainder.ToString() == checkCharacterInID)
{
valid = true;
}
}
else
{
digitalCheckCharacter = modulos - remainder;
checkCharacter = digitalCheckCharacter.ToString();
//3.与字符串中最后一位检查码比较，一致说明正确，否则错误
checkCharacterInID = IdentityID.Substring(9, 1);
if (checkCharacter.Equals(checkCharacterInID))
{
valid = true;
}
}
return valid;
}
//根据区域码得到两位数字.因为转换规律性不强，采用硬编码，可靠
private string GetRegionDigitalString(string regionPrefix)
{
string regionDigital = string.Empty;
switch (regionPrefix)
{
case "A":
regionDigital = "10";
break;
case "B":
regionDigital = "11";
break;
case "C":
regionDigital = "12";
break;
case "D":
regionDigital = "13";
break;
case "E":
regionDigital = "14";
break;
case "F":
regionDigital = "15";
break;
case "G":
regionDigital = "16";
break;
case "H":
regionDigital = "17";
break;
case "I":
regionDigital = "34";
break;
case "J":
regionDigital = "18";
break;
case "K":
regionDigital = "19";
break;
case "L":
regionDigital = "20";
break;
case "M":
regionDigital = "21";
break;
case "N":
regionDigital = "22";
break;
case "O":
regionDigital = "35";
break;
case "P":
regionDigital = "23";
break;
case "Q":
regionDigital = "24";
break;
case "R":
regionDigital = "25";
break;
case "S":
regionDigital = "26";
break;
case "T":
regionDigital = "27";
break;
case "U":
regionDigital = "28";
break;
case "V":
regionDigital = "29";
break;
case "W":
regionDigital = "32";
break;
case "X":
regionDigital = "30";
break;
case "Y":
regionDigital = "31";
break;
case "Z":
regionDigital = "33";
break;
default:
throw new Exception("Invalid region character");
}
return regionDigital;
}
#endregion
