（一）.Net互操性调试环境配置

1.1  将C++ DLL文件输出到主EXE所在目录

1.2  配置C++ DLL项目属性的命令和调试器类型两项

1.3   配置.NET Winform项目属性调试选项。一定要选择“启用本地代码调试”

调试如下图

（二）互操作性的事件处理

1.1   C++ DLL代码如下：

代码// Bsr.Hardware.cpp : 定义 DLL 应用程序的导出函数。//#include "stdafx.h"typedef void(*Action)();typedef void (__stdcall *LPFUN)(int);   _declspec(dllexport) int add(int a, int b, ){	int ret = a + b;	if (ball != nullptr) {		ball(ret);	}		return ret+100;}_declspec(dllexport) int add1(int a, int b){	int ret = a + b;	return ret;}

1.2   C#调用代码

代码public partial class Form1 : Form{    public delegate void AddEvent(int x);      [DllImport("Bsr.Hardware.DLL", EntryPoint = "add", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]    public static extern int add(int a, int b, AddEvent act);    [DllImport("Bsr.Hardware.DLL", EntryPoint = "add1", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]    public static extern int add1(int a, int b);       public static void ActEvent(int x)    {        MessageBox.Show(x.ToString());    }    private void button1_Click(object sender, EventArgs e)    {        AddEvent ev = new AddEvent(ActEvent);        int ret = add(100, 100, ev);        int y = 100;        MessageBox.Show("f1=" + ret.ToString());    }}