试图加载格式不正确的程序 [英] An attempt was made to load a program with an incorrect format

问题描述

我使用C＃加载C ++ DLL，并得到这个错误：

I am using C# loading C++ dll, and got this error:

MyApp.exe中发生类型为'System.BadImageFormatException'的未处理的异常
附加信息：尝试加载格式不正确的程序（来自HRESULT的异常：0x8057000B）

没有找出为什么。C ++ dll是使用vs2012向导，win32应用程序，dll与pre-head生成的。它是用x64选项构建的。这是代码：

I could not figure out why. The C++ dll was generated using vs2012 wizard, win32 application, dll with pre-head. It is built with x64 option. Here is the code:

// MyNativeDLL.cpp : Defines the exported functions for the DLL application.
//

#include "stdafx.h"
    //char* pMemoryBuffer = NULL;
    using namespace std;

    __declspec(dllexport) long  Test()
    {
        long a;
         a = 1;
         a++;
         return a;
    }

调用它是：

[DllImport("C:\\MyNativeDLL\\x64\\Debug\\MyNativeDLL.dll",  EntryPoint = "Test")]
private extern static int Test();
void doJob()
{
   long a = Test();  // exception thrown here
}

C＃代码是使用任何CPU选项构建的，正在加载x64本机dll。
我想知道我在哪里做错了？我一直在努力很长，但真的卡在这里。谢谢！

C# code is built with Any CPU option, and it is loading the x64 native dll. I wondering where I did wrong? I have been trying long, but really get stuck here. Thanks!

UPDATE
当我使用win 32选项编译我的本地dll并设置正确的dll路径， 。但是当我编译我的本机dll与x64选项，加载正确的路径，加载失败。

UPDATE When I compile my native dll using win 32 option, and set up correct dll path, it loads successfully. But when I compile my native dll with x64 options, load with correct path, the loading fails.

推荐答案

如前所述：
C ++ dll是使用vs2012向导，win32应用程序，dll前头。它是用x64选项构建的

DLL和exe必须同时为32位或64位。

The DLL and exe have to be both 32 bit, or both 64 bit.

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