C#开发ActiveX控件及指纹采集

最近做一个指纹采集和比对的功能，因为公司整个项目是WEB类型的，所以指纹采集的模块要嵌套在网页中，那只有用ActiveX了，以下是一些操作及效果，做个笔记！

新建用户控件，编写CS代码，如下：

 

using System;using System.Collections.Generic;using System.ComponentModel;using System.Drawing;using System.Data;using System.Text;using System.Runtime.InteropServices;using System.Windows.Forms;using System.IO; using System.Reflection;namespace FingerTool{    [Guid("5136CBA1-59B0-4A96-B2DC-64062A81F377")]    public partial class FingerToolUC : UserControl,IObjectSafety    {        public FingerToolUC()        {            InitializeComponent();        }        FrmMain fm = null;        public void ShowSettingForm()        {            if (fm == null)             {                fm = new FrmMain();            }                        fm.ShowDialog();        }        #region 调用JS接口        [ComImport, Guid("00000118-0000-0000-C000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]        public interface IOleClientSite        {            void SaveObject();            void GetMoniker(uint dwAssign, uint dwWhichMoniker, object ppmk);            void GetContainer(out IOleContainer ppContainer);            void ShowObject();            void OnShowWindow(bool fShow);            void RequestNewObjectLayout();        }        [ComImport, Guid("0000011B-0000-0000-C000-000000000046"), InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]        public interface IOleContainer        {            void EnumObjects([In, MarshalAs(UnmanagedType.U4)] int grfFlags,             [Out, MarshalAs(UnmanagedType.LPArray)] object[] ppenum);            void ParseDisplayName([In, MarshalAs(UnmanagedType.Interface)] object pbc,             [In, MarshalAs(UnmanagedType.BStr)] string pszDisplayName,             [Out, MarshalAs(UnmanagedType.LPArray)] int[] pchEaten,             [Out, MarshalAs(UnmanagedType.LPArray)] object[] ppmkOut);            void LockContainer([In, MarshalAs(UnmanagedType.I4)] int fLock);        }        #endregion        #region IE 安全接口        private const string _IID_IDispatch = "{00020400-0000-0000-C000-000000000046}";        private const string _IID_IDispatchEx = "{a6ef9860-c720-11d0-9337-00a0c90dcaa9}";        private const string _IID_IPersistStorage = "{0000010A-0000-0000-C000-000000000046}";        private const string _IID_IPersistStream = "{00000109-0000-0000-C000-000000000046}";        private const string _IID_IPersistPropertyBag = "{37D84F60-42CB-11CE-8135-00AA004BB851}";        private const int INTERFACESAFE_FOR_UNTRUSTED_CALLER = 0x00000001;        private const int INTERFACESAFE_FOR_UNTRUSTED_DATA = 0x00000002;        private const int S_OK = 0;        private const int E_FAIL = unchecked((int)0x80004005);        private const int E_NOINTERFACE = unchecked((int)0x80004002);        private bool _fSafeForScripting = true;        private bool _fSafeForInitializing = true;        public int GetInterfaceSafetyOptions(ref Guid riid, ref int pdwSupportedOptions, ref int pdwEnabledOptions)        {            int Rslt = E_FAIL;            string strGUID = riid.ToString("B");            pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;            switch (strGUID)            {                case _IID_IDispatch:                case _IID_IDispatchEx:                    Rslt = S_OK;                    pdwEnabledOptions = 0;                    if (_fSafeForScripting == true)                        pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER;                    break;                case _IID_IPersistStorage:                case _IID_IPersistStream:                case _IID_IPersistPropertyBag:                    Rslt = S_OK;                    pdwEnabledOptions = 0;                    if (_fSafeForInitializing == true)                        pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA;                    break;                default:                    Rslt = E_NOINTERFACE;                    break;            }            return Rslt;        }

 

指纹采集关键代码：

private void axZKFPEngX1_OnImageReceived(object sender, AxZKFPEngXControl.IZKFPEngXEvents_OnImageReceivedEvent e)        {            if (!e.aImageValid) return;            if (axZKFPEngX1.IsDisposed) return;            try            {                if (pictureBox1.Image != null)                {                    pictureBox1.Image.Dispose();//释放文件资源                    pictureBox1.Image = null;//清除图片                }                if (!System.IO.Directory.Exists(mvPath))                {                    System.IO.Directory.CreateDirectory(mvPath);                }                string FilePath = mvPath + "\\" + Guid.NewGuid().ToString() + ".bmp";                axZKFPEngX1.SaveBitmap(FilePath);//保存新文件                pictureBox1.Image = System.Drawing.Bitmap.FromFile(FilePath);//显示图片                pictureBox1.Refresh();                if (this.txtValue.Text.Trim() != "")                {                    SetMsg("", "Control");                }            }            catch (Exception ex)            {                MessageBox.Show(ex.Message);            }        }   private void axZKFPEngX1_OnFeatureInfo(object sender, AxZKFPEngXControl.IZKFPEngXEvents_OnFeatureInfoEvent e)        {            string sTemp = "";            if (axZKFPEngX1.IsRegister)            {                sTemp = "登记状态：还需要按压：" + (axZKFPEngX1.EnrollIndex - 1).ToString() + "次指纹 ";            }            sTemp = sTemp + "指纹质量";            if (e.aQuality != 0)            {                if (e.aQuality == 1)                {                    sTemp = sTemp + "特征点不够";                }                else                {                    sTemp = sTemp + "其它原因导致不能取到指纹特征";                }            }            else            {                sTemp = sTemp + "合格";            }            this.lblMessage.Text = sTemp;        }

指纹校验部分，最后保存起来的指纹是转换之后的BASE64字符串

string Value_Old="";//已经登记的指纹string Value_Curr="";//当前的指纹 bool IsOK = false;            bool bRegChange = false;            if (axZKFPEngX1.VerFingerFromStr(ref Value_Old, Value_Curr, false, ref bRegChange))            {                IsOK = true;            }            if (axZKFPEngX1.VerFingerFromStr(ref Value_Old2, Value_Curr, false, ref bRegChange))            {                IsOK = true;            }            if (IsOK)            {                MessageBox.Show("OK");            }            else            {                MessageBox.Show("NG");            }

设置项目的COM属性

在页面中注册此插件

采集指纹的次数可以自定义，默认为采集三次之后保存,设备是中控的采集器。