CodeBlocks 创建dll C#调用

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CodeBlocks 创建 test.dll

test.h

#ifndef TEST_H#define TEST_H#ifdef BUILD_DLL#define DLL_EXPORT __declspec(dllexport)#else#define DLL_EXPORT __declspec(dllimport)#endif // BUILD_DLLint DLL_EXPORT mul(int,int);int DLL_EXPORT add(int,int);void DLL_EXPORT order(int[],int);#endif // TEST_H

test.c

#include "test.h"int DLL_EXPORT mul(int x,int y){    return x*y;}int DLL_EXPORT add(int x,int y){    return x+y;}void DLL_EXPORT order(int x[],int count){    int tmp,i,j;    for(i=1; i<count; i++)    {        for(j=count-1; j>=i; j--)        {            if(x[j]<x[j-1])            {                tmp=x[j-1];                x[j-1]=x[j];                x[j]=tmp;            }        }    }}

C#中调用

 [DllImport("test.dll", CallingConvention = CallingConvention.Cdecl)]static extern int mul(int x, int y);[DllImport("test.dll", CallingConvention = CallingConvention.Cdecl)]static extern int add(int x, int y);[DllImport("test.dll", CallingConvention = CallingConvention.Cdecl)]static extern void order(int[] x, int count);

 static void Main(string[] args)        {            Console.WriteLine(mul(3, 5));            Console.WriteLine(add(3, 5));            int[] y = { 3, 2, 5, 9, 8, 1 };            order(y, y.Length);            foreach (int i in y)            {                Console.Write(i + " ");            }            Console.Read();        }

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