无法从C＃.NET加载Win32 Native DLL文件 [英] Unable to load Win32 Native DLL file from C#.NET

问题描述

我有一个C＃winapp。我从C＃应用程序调用一个本机的.dll文件（由C ++自己创建），并且工作正常。

但是当我复制我的应用程序（.exe和。 dll文件）到另一台机器，我得到一个错误，说：

无法加载DLLc：\dllname.dll：指定的模块可以没有找到。 （HRESULT的异常：0x8007007E）

这是C＃代码：

  class IsoMessageHelper 
 {
 public const string ISO8583_DLL =c：\\Hc8583.dll; 
 [DllImport（ISO8583_DLL，CallingConvention = CallingConvention.Cdecl）] 
 public static extern bool InitializationRq（...）
} 
  

我应该怎么做？

解决方案

部署时常见的问题。具有本机依赖关系的网络应用程序是本机dll可能在目标机器上本身丢失依赖关系，例如C运行时的正确版本。

使用 Dependency Walker 来分析您的本地DLL，并确定它是否与您已复制的机器缺少依赖关系。

I have a C# winapp. I call a native .dll file (created in C++ by myself) from the C# app, and it works fine.

But when I copy my application (.exe and .dll files) to another machine, I get an error that says:

Unable to load DLL "c:\dllname.dll": The specified module could not be found. (Exception from HRESULT: 0x8007007E)

Here is the C# code:

class IsoMessageHelper
{
    public const string ISO8583_DLL = "c:\\Hc8583.dll";
    [DllImport(ISO8583_DLL, CallingConvention = CallingConvention.Cdecl)]
    public static extern bool InitializationRq(...)
}

What should I do?

解决方案

A common issue when deploying .Net applications that have native dependencies, is that the native dlls may be missing dependencies themselves on the target machines e.g. the correct version of the C runtime.

Use a tool such a Dependency Walker to analyze your native dll and determine if it has a missing dependency on the machine you have copied it too.

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