C# 调用动态链接库读取二代身份证信息

[[420764]]

本文转载自微信公众号「后端Q」，作者conan。转载本文请联系后端Q公众号。

概述

一般来说winform应用程序解决这个问题起来时很容易的，web应用程序就麻烦一点了。你必要有联机型居民身份证阅读器一个。

实现方式

1、新建一个winform控件项目ReadCardControl，添加一个主类ReadIDCard

private bool  ReadIDCard() 
     { 
         try 
         { 
             BLL.API.SynIDCardAPI.IDCardData CardMsg = new BLL.API.SynIDCardAPI.IDCardData(); 
             int nRet, nPort; 
             byte[] pucIIN = new byte[4]; 
             byte[] pucSN = new byte[8]; 
             nPort = Convert.ToInt32(1001); 
             if (BLL.API.SynIDCardAPI.Syn_OpenPort(nPort) == 0) 
             { 
                 if (BLL.API.SynIDCardAPI.Syn_SetMaxRFByte(nPort, 80, 0) == 0) 
                 { 
 
                     nRet = BLL.API.SynIDCardAPI.Syn_StartFindIDCard(nPort, ref pucIIN[0], 0); 
                     nRet = BLL.API.SynIDCardAPI.Syn_SelectIDCard(nPort, ref pucSN[0], 0); 
                     nRet = BLL.API.SynIDCardAPI.Syn_ReadMsg(nPort, 0, ref CardMsg); 
                     if (nRet == 0) 
                     { 
                         txtAddress.Text = CardMsg.Address; 
                          
                         txtBirthday.Text = CardMsg.Born; 
                         txtCerticate.Text = CardMsg.IDCardNo; 
                        
                         txtIssuingAuthoriy.Text = CardMsg.GrantDept; 
                         txtNames.Text = CardMsg.Name; 
                         txtNation.Text = Xw.Common.Helper.NationHelper.GetNationByNO(CardMsg.Nation); 
                         txtSex.Text = CardMsg.Sex == "1" ? "男" : "女"; 
                         picMan.Image = Image.FromFile(CardMsg.PhotoFileName); 
                         //lblMsg.Text = "读卡成功"; 
                         return true; 
                     } 
                     else 
                     { 
                         lblMsg.Text = "请放卡: 读取身份证信息错误"; 
                         return false; 
                     } 
                 } 
             } 
             else 
             { 
                 lblMsg.Text = "打开端口失败"; 
                 return false; 
             } 
             return true; 
         } 
         catch (Exception ex) 
         { 
             Xw.Common.Helper.LogHelper.WriteErrorToLog(ex.Message); 
             return false; 
         } 
     } 

2、声明DllImport，调用动态链接库

public  class SynIDCardAPI 
    { 
        #region IDCardData 
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)] 
        public struct IDCardData 
        { 
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)] //结构中使用的字串，[]类似限定说明 说明此公共结构传输到非托管代码时封装定义 
            public string Name; //姓名    
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 6)] 
            public string Sex;   //性别 
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 20)] 
            public string Nation; //名族 
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 18)] 
            public string Born; //出生日期 
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 72)] 
            public string Address; //住址 
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 38)] 
            public string IDCardNo; //身份证号 
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)] 
            public string GrantDept; //发证机关 
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 18)] 
            public string UserLifeBegin; // 有效开始日期 
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 18)] 
            public string UserLifeEnd;  // 有效截止日期 
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 38)] 
            public string reserved; // 保留 
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 255)] 
            public string PhotoFileName; // 照片路径 
        } 
        #endregion 
        #region SynIDCardAPI 
        /************************端口类API *************************/ 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_SetMaxRFByte", CharSet = CharSet.Ansi)] 
        public static extern int Syn_SetMaxRFByte(int iPort, byte ucByte, int iIfOpen); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_GetCOMBaud", CharSet = CharSet.Ansi)] 
        public static extern int Syn_GetCOMBaud(int iPort, ref uint puiBaudRate); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_SetCOMBaud", CharSet = CharSet.Ansi)] 
        public static extern int Syn_SetCOMBaud(int iPort, uint uiCurrBaud, uint uiSetBaud); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_OpenPort", CharSet = CharSet.Ansi)] 
        public static extern int Syn_OpenPort(int iPort); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_ClosePort", CharSet = CharSet.Ansi)] 
        public static extern int Syn_ClosePort(int iPort); 
        /**************************SAM类函数 **************************/ 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_ResetSAM", CharSet = CharSet.Ansi)] 
        public static extern int Syn_ResetSAM(int iPort, int iIfOpen); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_GetSAMStatus", CharSet = CharSet.Ansi)] 
        public static extern int Syn_GetSAMStatus(int iPort, int iIfOpen); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_GetSAMID", CharSet = CharSet.Ansi)] 
        public static extern int Syn_GetSAMID(int iPort, ref byte pucSAMID, int iIfOpen); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_GetSAMIDToStr", CharSet = CharSet.Ansi)] 
        public static extern int Syn_GetSAMIDToStr(int iPort, ref byte pcSAMID, int iIfOpen); 
        /*************************身份证卡类函数 ***************************/ 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_StartFindIDCard", CharSet = CharSet.Ansi)] 
        public static extern int Syn_StartFindIDCard(int iPort, ref byte pucIIN, int iIfOpen); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_SelectIDCard", CharSet = CharSet.Ansi)] 
        public static extern int Syn_SelectIDCard(int iPort, ref byte pucSN, int iIfOpen); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_ReadBaseMsg", CharSet = CharSet.Ansi)] 
        public static extern int Syn_ReadBaseMsg(int iPort, ref byte pucCHMsg, ref uint puiCHMsgLen, ref byte pucPHMsg, ref uint puiPHMsgLen, int iIfOpen); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_ReadIINSNDN", CharSet = CharSet.Ansi)] 
        public static extern int Syn_ReadIINSNDN(int iPort, ref byte pucIINSNDN, int iIfOpen); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_ReadBaseMsgToFile", CharSet = CharSet.Ansi)] 
        public static extern int Syn_ReadBaseMsgToFile(int iPort, ref byte pcCHMsgFileName, ref uint puiCHMsgFileLen, ref byte pcPHMsgFileName, ref uint puiPHMsgFileLen, int iIfOpen); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_ReadIINSNDNToASCII", CharSet = CharSet.Ansi)] 
        public static extern int Syn_ReadIINSNDNToASCII(int iPort, ref byte pucIINSNDN, int iIfOpen); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_ReadNewAppMsg", CharSet = CharSet.Ansi)] 
        public static extern int Syn_ReadNewAppMsg(int iPort, ref byte pucAppMsg, ref uint puiAppMsgLen, int iIfOpen); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_GetBmp", CharSet = CharSet.Ansi)] 
        public static extern int Syn_GetBmp(int iPort, ref byte Wlt_File); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_ReadMsg", CharSet = CharSet.Ansi)] 
        public static extern int Syn_ReadMsg(int iPortID, int iIfOpen, ref IDCardData pIDCardData); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_FindReader", CharSet = CharSet.Ansi)] 
        public static extern int Syn_FindReader(); 
        /***********************设置附加功能函数 ************************/ 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_SetPhotoPath", CharSet = CharSet.Ansi)] 
        public static extern int Syn_SetPhotoPath(int iOption, ref byte cPhotoPath); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_SetPhotoType", CharSet = CharSet.Ansi)] 
        public static extern int Syn_SetPhotoType(int iType); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_SetPhotoName", CharSet = CharSet.Ansi)] 
        public static extern int Syn_SetPhotoName(int iType); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_SetSexType", CharSet = CharSet.Ansi)] 
        public static extern int Syn_SetSexType(int iType); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_SetNationType", CharSet = CharSet.Ansi)] 
        public static extern int Syn_SetNationType(int iType); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_SetBornType", CharSet = CharSet.Ansi)] 
        public static extern int Syn_SetBornType(int iType); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_SetUserLifeBType", CharSet = CharSet.Ansi)] 
        public static extern int Syn_SetUserLifeBType(int iType); 
        [DllImport("SynIDCardAPI.dll", EntryPoint = "Syn_SetUserLifeEType", CharSet = CharSet.Ansi)] 
        public static extern int Syn_SetUserLifeEType(int iType, int iOption); 
 
        #endregion 
    } 

3、读取显示相关的信息

txtAddress.Text = CardMsg.Address; 
                             
                            txtBirthday.Text = CardMsg.Born; 
                            txtCerticate.Text = CardMsg.IDCardNo; 
                           
                            txtIssuingAuthoriy.Text = CardMsg.GrantDept; 
                            txtNames.Text = CardMsg.Name; 
                            txtNation.Text = Xw.Common.Helper.NationHelper.GetNationByNO(CardMsg.Nation); 
                            txtSex.Text = CardMsg.Sex == "1" ? "男" : "女"; 
                            picMan.Image = Image.FromFile(CardMsg.PhotoFileName); 
                            //lblMsg.Text = "读卡成功"; 
                            return true;