1     public class NativeCalculate
2     {
3         public int Add(int a, int b)
4         {
5             return a + b;
6         }
7     }

//NativeCSharpWrapper.h

#pragma once

using namespace System;

namespace CSharpWrapper {
    public ref class NativeCSharpWrapper
    {
        public:
        static int Add(int a, int b);
    };
}

//NativeCSharpWrapper.cpp

#include "pch.h"

#include "NativeCSharpWrapper.h"

using namespace CSharpWrapper;
using namespace CSharpNative;

int NativeCSharpWrapper::Add(int a, int b) {
    int sum = 0;
    NativeCalculate^ nativeCalculate = gcnew NativeCalculate(); // 创建C#类的实例
    sum = nativeCalculate->Add(a, b); // 调用C#方法
    return sum;
}

//NativeCalculate.h

#pragma once
#ifndef NATIVE_CLASS_H
#define NATIVE_CLASS_H

class __declspec(dllexport) CPlusCalculate {
public:
    static int Add(int a, int b);
};
#endif // NATIVE_CLASS_H

// NativeCSharpWrapper.cpp

#include "pch.h"
#include "NativeCSharpWrapper.h"

using namespace CSharpWrapper;
using namespace CSharpNative;

int NativeCSharpWrapper::Add(int a, int b) {
    int sum = 0;
    NativeCalculate^ nativeCalculate = gcnew NativeCalculate(); // 创建C#类的实例
    sum = nativeCalculate->Add(a, b); // 调用C#方法
    return sum;
}

#include <iostream>
#include "CPlusCalculate.h"
int main()
{
    int sum = CPlusCalculate::Add(50, 40);
}