C#开发Activex控件(二)

最新推荐文章于 2025-08-08 14:35:14 发布

转载最新推荐文章于 2025-08-08 14:35:14 发布 · 57 阅读

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原文链接：http://www.cnblogs.com/WikStone/archive/2012/05/26/2519161.html

本文详细介绍了如何从头开始制作Activex插件，包括创建文本框和按钮、设置程序集信息、实现IObjectSafety接口、编写核心代码、打包处理等步骤。重点在于通过实例演示了如何让ActiveX控件在客户端获得信任。

今天就开始制作Activex插件。

2.暂时放个文本框，和按钮，点击按钮后将所要显示信息显示到文本框中

3.　更改“项目属性-应用程序-程序集信息”设置，勾选“使程序集 COM 可见”（重要）：

4.更改“项目属性-生成”设置，勾选“为 COM Interop 注册”（注意，此处如果实在debug状态下修改的，那在调到release状态下还需要再设置一次）（重要）：

5.修改AssemblyInfo.cs文件，添加[assembly: AllowPartiallyTrustedCallers()]项（需要引用System.Security名称空间）：

6.下面就开始准备核心部分，首先，为控件类添加GUID，这个编号将用于B/S系统的客户端调用时使用（可以在SDK工具-创建GUID ）：

7.　　为了让ActiveX控件获得客户端的信任，控件类还需要实现一个名为“IObjectSafety”的接口。先创建该接口（注意，不能修改该接口的GUID值）：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;

 namespace CardReaderControl
{
    [ComImport, GuidAttribute("CB5BDC81-93C1-11CF-8F20-00805F2CD064")]
    [InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IObjectSafety
    {
        [PreserveSig]
        int GetInterfaceSafetyOptions(ref Guid riid, [MarshalAs(UnmanagedType.U4)] ref int pdwSupportedOptions, [MarshalAs(UnmanagedType.U4)] ref int pdwEnabledOptions);

        [PreserveSig()]
        int SetInterfaceSafetyOptions(ref Guid riid, [MarshalAs(UnmanagedType.U4)] int dwOptionSetMask, [MarshalAs(UnmanagedType.U4)] int dwEnabledOptions);
    }

}

8.然后在控件类中继承并实现该接口：

View Code

 #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

9.然后就可以写自己的代码了，再次直接点击按钮，然后刷卡，输出数据，这块代码只是测试代码，还没进行很好的整理

View Code

 private void btn_send_Click(object sender, EventArgs e)
        {
            try
            {
                serialPort1.PortName = "COM1";//端口号
                serialPort1.BaudRate = 9600;//波特率
                serialPort1.Parity = 0;//无奇偶校验
                //serialPort1.StopBits = (StopBits)Convert.ToByte("1", 10);
                serialPort1.DataBits = 8;//数据位
                serialPort1.Open();
                //txtShow.AppendText("初始化串口成功！");
                byte[] data = new byte[2]; //mysendb();
                data[0] = 0x1b;
                data[1] = 0x5d;
                serialPort1.Write(data, 0, 2);
                // serialPort1.DataReceived += new SerialDataReceivedEventHandler(serialPort1_DataReceived);//注此事件监听串口是否有数据
                try
                {

                    Thread.Sleep(2000);//此处暂时延时实现效果 本应该监听串口处是否有数据，有的话取出，否则一直等待
                    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 str = Encoding.ASCII.GetString(buffer);//将二进制转换成字符
                    string endStr = str.Substring(2, str.Length - 4);
                    //txtShow.AppendText(endStr);
                    txtShow.Text = endStr;
                    serialPort1.Close();
                }
                catch (Exception ex)
                {
                    serialPort1.Close();
                    MessageBox.Show(ex.Message);

                }

            }
            catch
            {
                MessageBox.Show("初始化串口失败!");
                //txtShow.AppendText("初始化串口失败！");

            }
        }

下面就要进行打包处理，然后调用，本月实在太忙，只有抽下班那么一会（悲催的程序猿），简单写点，其余部分会在下面几篇写出!今天的就当准备工作吧！

由于时间问题，直接源码：源码

转载于:https://www.cnblogs.com/WikStone/archive/2012/05/26/2519161.html