C # to call C ++ dynamic link library dll

We found that in the process are two ways to solve the problem: dll unmanaged C ++ library one kind created, you need to call a static method. This method can not be directly referenced in the C # reference, but rather to use a static method call, the other blog has been described in great detail, the only need to add that, C # file you need to:

using System.Runtime.InteropServices;

Before you can call [DllImport] method.

Another method is to directly using CLR, managed to generate C ++ dll library.

Create a process

routine as
C ++ dll:

// CPPlibdemo.h
#pragma once

using namespace System;

namespace CPPlibdemo {

    public ref class Class1
    {
        // TODO: Add your methods for this class here.
    public:
            String ^getgreating(){

            return "hello world";
        }
    };
}

C # Language:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using CPPlibdemo;

namespace ConsoleApplication5
{
    class Program
    {
        static void Main(string[] args)
        {
            Class1 clrdemo = new Class1();

            Console.Write(clrdemo.getgreating());
            Console.ReadLine();
        }
    }
}

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