如何从C#ASP.NET网页调用非托管C/C++代码

// MyNativeCode.h
#pragma once

#include<windows.h>

extern "C" __declspec(dllexport) void MyNativeFunction(const char* message);

// MyNativeCode.cpp
#include "MyNativeCode.h"
#include<iostream>

void MyNativeFunction(const char* message)
{
    std::cout << "Message from native code: "<< message<< std::endl;
}

using System.Runtime.InteropServices;

namespace MyASPNETApp
{
    public class NativeMethods
    {
        [DllImport("MyNativeCode.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
        public static extern void MyNativeFunction(string message);
    }
}

protected void Button1_Click(object sender, EventArgs e)
{
    NativeMethods.MyNativeFunction("Hello from ASP.NET!");
}