如何从.NET中的VB6 dll使用方法？ [英] How to use method from VB6 dll in .NET?

问题描述

我有ActiveX VB6 DLL（无法访问其源代码），并且想调用方法'GetUnitInfo'

I have ActiveX VB6 DLL (have no access to its sources), and want to call method 'GetUnitInfo'

我使用的导入方式如下：

I use to import it like:

[DllImport(@"C:\Users\R\Documents\lab.dll")]
public static extern long GetUnitInfo(String strRequest, String strInfo, String strName);

但我有一个例外：

在DLL中找不到名为'GetUnitInfo'的入口点

Unable to find an entry point named 'GetUnitInfo' in DLL

我也尝试加载它：

Assembly myAssembly ;
myAssembly = Assembly.LoadFile("C:\\Users\\R\\Documents\\lab.dll");

但遇到异常

该模块应包含程序集清单。 （来自HRESULT的异常：0x80131018）

The module was expected to contain an assembly manifest. (Exception from HRESULT: 0x80131018)

我尝试清理解决方案，关闭项目选项中的清单，创建新的清单文件，但对我没有帮助...

I have tryied to clean solution, to turn off manifest in project options, to create new manifest file, but it did not helped me...

推荐答案

找到了解决方案，mb其他人会发现有用，（在我情况）：

Found solution, mb someone else will find usefull, (this worked in my case):

1. 创建VB6 ActiveX dll的.Net包装器

1. Create .Net wrapper of VB6 ActiveX dll

1.1以管理员身份运行CMD

1.1 Run CMD as Administrator

1.2移至.NET SDK文件夹- cd C：\Program Files\Microsoft SDKs\Windows＼ ＼v10.0A\bin\NETFX 4.6.1工具\ （在我的情况下）。

1.2 Move to .NET SDK folder - cd C:\Program Files\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6.1 Tools\ (in my case).

1.3运行- TlbImp.exe
C：\path_to_old.dll \out：new.dll

注册ActiveX dll

Register ActiveX dll

2.1以管理员身份运行CMD

2.1 Run CMD as Administrator

2.2运行- regsvr32.exe C：\path_to_old.dll

在C＃项目中添加对转换后的dll（ new.dll）的引用

Add Reference to converted dll ("new.dll") in c# project

我曾经添加了 new .dll引用，然后注册以下异常

I used to add "new.dll" reference before registering "old.dll", and was getting following exception

为具有CLSID {F2D4F4E5的组件检索COM类工厂-EEA1-46FF-A83B-A270C92DAE4B}由于以下错误而失败：80040154未注册类（HRESULT的异常：0x80040154（REGDB_E_CLASSNOTREG））

Retrieving the COM class factory for component with CLSID {F2D4F4E5-EEA1-46FF-A83B-A270C92DAE4B} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))

清洁溶液，删除参考文献并执行步骤2,3-帮助

Cleaning solution, removing reference and following steps 2,3 - helped

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