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 = ;
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 = ;
if (_fSafeForScripting == true)
pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER;
break;
case _IID_IPersistStorage:
case _IID_IPersistStream:
case _IID_IPersistPropertyBag:
Rslt = S_OK;
pdwEnabledOptions = ;
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 - ).ToString() + "次指纹 ";
} sTemp = sTemp + "指纹质量"; if (e.aQuality != )
{
if (e.aQuality == )
{
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。