实例介绍
【实例简介】
【实例截图】
【实例截图】
【核心代码】
页面源码：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="jzyd.aspx.cs" Inherits="BSCard.jzyd" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript">
window.onload = function () {
document.getElementById("Object1").RegJs(window, "Show"); //将页面对象，和所需调用的js方法名传给activex
}
//关闭页面时关闭串口
window.onbeforeunload=function()
{
document.getElementById("Object1").closeSp();
}
//activex调用的js方法
function Show(str) {
document.getElementById("text1").value = str;
}
//将卡号加载到页面中
function load() {
document.getElementById("text1").value = document.getElementById("Object1").GetCard();
}
function keyDown() {
var keyCode = event.keyCode;
//按下空格键的时候，重新发送命令
if (keyCode==32)
{
document.getElementById("Object1").load();
}
//回车键的时候，获取卡号
if (keyCode==13)
{
load();
}
}
</script>
</head>
<body onkeydown="keyDown()">
<form id="form1" runat="server">
<div>
<input type="text" id="text1" />
<object id="Object1" classid="clsid:82611CA0-938D-4AC8-A6B1-17D4313E8C32" width="100"
height="25" style="display:none"
codebase="/lib/setup.exe">
</object>
<input type="button" value="获取卡号" onclick="load()" />
</div>
</form>
</body>
</html>
插件源码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Security;
using System.Threading;
using mshtml;
using System.Reflection;
namespace CardReaderControl
{
[Guid("82611CA0-938D-4AC8-A6B1-17D4313E8C31")]
public partial class ReadCard : UserControl, IObjectSafety
{
public string InputEnd
{
get;
set;
}
private IHTMLWindow2 temphtml = null;
private string functionstr = "";
public void RegJs(object win, string fuc)
{
temphtml = (IHTMLWindow2)win;
if (temphtml != null && !string.IsNullOrEmpty(fuc))
{
functionstr = fuc;
}
else
{
temphtml = null;
functionstr = "";
MessageBox.Show("注册脚本失败！");
}
}
#region IObjectSafety 成员
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;
}
public int SetInterfaceSafetyOptions(ref Guid riid, int dwOptionSetMask, int dwEnabledOptions)
{
int Rslt = E_FAIL;
string strGUID = riid.ToString("B");
switch (strGUID)
{
case _IID_IDispatch:
case _IID_IDispatchEx:
if (((dwEnabledOptions & dwOptionSetMask) == INTERFACESAFE_FOR_UNTRUSTED_CALLER) && (_fSafeForScripting == true))
Rslt = S_OK;
break;
case _IID_IPersistStorage:
case _IID_IPersistStream:
case _IID_IPersistPropertyBag:
if (((dwEnabledOptions & dwOptionSetMask) == INTERFACESAFE_FOR_UNTRUSTED_DATA) && (_fSafeForInitializing == true))
Rslt = S_OK;
break;
default:
Rslt = E_NOINTERFACE;
break;
}
return Rslt;
}
#endregion
public ReadCard()
{
InitializeComponent();
LoadInfo();
}
public void LoadInfo()
{
//获取可用的串口号
foreach (string com in System.IO.Ports.SerialPort.GetPortNames())
{
//若串口关闭，则打开
if (serialPort1.IsOpen)
{
serialPort1.Close();
}
//若串口可以打开说明可以用，否则继续查找可用的串口
if (serialPort1.IsOpen)
{
serialPort1.PortName = com;
break;
}
}
serialPort1.BaudRate = 9600;
serialPort1.Parity = 0;
serialPort1.DataBits = 8;
//若串口关闭，则打开
if (!serialPort1.IsOpen)
{
serialPort1.Open();
}
byte[] data = new byte[2];
data[0] = 0x1b;
data[1] = 0x5d;
serialPort1.Write(data, 0, 2);
//触发刷卡事件后执行serialPort1_DataReceived方法，返回卡号
serialPort1.DataReceived =new System.IO.Ports.SerialDataReceivedEventHandler(serialPort1_DataReceived);
}
void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
try
{
Thread.Sleep(50);//保证足够的时间读取完整数据
int bytes = serialPort1.BytesToRead;
// 创建字节数组
byte[] buffer = new byte[bytes];
// 读取缓冲区的数据到数组
serialPort1.Read(buffer, 0, bytes);
string strbuffer = Encoding.ASCII.GetString(buffer);//将二进制转换成字符
string romovestartChar = strbuffer.Substring(2);
string rightInfo = romovestartChar.Substring(0, romovestartChar.IndexOf('?'));
/*刷完后立即调用页面的js，把卡号传到页面的文本框中，可是下面的语句在在按钮事件中执行，但是在这个事件中执行的
时候提示指定的转化无效，至今没找到解决办法，不明白同样都是事件，为什么它有问题*/
//activex调用js
temphtml.execScript(functionstr "('" rightInfo "')", "JScript");
if (serialPort1.IsOpen)
{
serialPort1.Close();
}
}
catch (Exception ex)
{
if (serialPort1.IsOpen)
{
serialPort1.Close();
}
MessageBox.Show(ex.Message);
}
}
//测试activex调用js是否成功
private void button1_Click(object sender, EventArgs e)
{
try
{
//经过测试，activex调用js成功，可触发事件后直接把值传到文本框中
//activex调用js
temphtml.execScript(functionstr "('读取过来的参数')", "JScript");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
//测试用按钮取出刷卡后的数据，并返回到文本框中
private void button3_Click(object sender, EventArgs e)
{
try
{
Thread.Sleep(50);//保证足够的时间读取完整数据
int bytes = serialPort1.BytesToRead;
//如果btyes为0，则没刷卡，否则刷卡
if (bytes != 0)
{
// 创建字节数组
byte[] buffer = new byte[bytes];
// 读取缓冲区的数据到数组
serialPort1.Read(buffer, 0, bytes);
string strbuffer = Encoding.ASCII.GetString(buffer);//将二进制转换成字符
string romovestartChar = strbuffer.Substring(2);
string rightInfo = romovestartChar.Substring(0, romovestartChar.IndexOf('?'));
//activex调用js
temphtml.execScript(functionstr "('" rightInfo "')", "JScript");
}
else
{
MessageBox.Show("请刷卡后接受数据");
}
if (serialPort1.IsOpen)
{
serialPort1.Close();
}
}
catch (Exception ex)
{
if (serialPort1.IsOpen)
{
serialPort1.Close();
}
MessageBox.Show(ex.Message);
}
}
//用来获取Guid号
private void button4_Click(object sender, EventArgs e)
{
MessageBox.Show(Guid.NewGuid().ToString());
}
}
}
标签： 创建USB通信
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