I have a .dll file written in VB6. I understand that I can add this .dll file as a reference in my VS project, but I need to be able to add this .dll file as an embedded resource to my VS solution. I then would like to invoke this .dll file to call a function.
However I cannot load the .dll file as an assembly because it was written in VB6. Assuming I cannot simply rewrite this code to .net, does anyone have a working solution for converting this dll to a recognizable assembly file?
You won't need to convert it, you just need to reference it as an unmanaged DLL. See http://msdn.microsoft.com/en-us/magazine/cc301501.aspx for instructions on how to do this.
Related
I have a solution which contains 2 projects. One is a C++ wrapper for an external, third party library which is contained withing a series of Dll fies. The other is a C# project which references the C++ project via [DllImportAttribute].
What is the proper way to copy these Dlls so that they are found upon execution of the C# project? Are the typically registered with the system? Are all Dlls (both the external library and the C++ project) copied into the C# output folder?
How is this usually done? In a post-build step?
I'm sure there are a few ways to accomplish this, I just want to use the most common, trouble free approach. thanks.
Generally Windows searches a dll in the same directory of the executable file first:
https://learn.microsoft.com/en-us/windows/win32/dlls/dynamic-link-library-search-order
, so copy every dll files into this directory (the C# output folder in the case).
Based on your description, you want to call c++ dll in c# app.
I write the detailed steps in the following link, you could have a look.
how to call c++ dll in c# app
I had one C++ project written in MFC and some of the project are of DLL type. I wanted to use those dll in my C# code(using DllImport).
I tried to add as a reference but could not able to and getting an error. Do i need to copy those dll's in any of particular location? How my code is going to link those dll's?
You can't add a reference to a native DLL. In DllImport you just import the DLL at runtime so be careful with the path to the DLL if it is not in the same directory as your managed application.
A problem with C++-DLLs is, that the function names in that DLLs can be decorated so you have to find out that decorated name before using it.
I'm using VS2013, and have a solution that has a C++ Project that references the TLB file from a C#.,dll project in the same solution.
My import statement
#import "Toolbox.Accessor.tlb" named_guids
in the C++ project cannot find the TLB. I get the compile time error error C1083: Cannot open type library file: 'Toolbox.Accessor.tlb': No such file or directory
While I totally understand the error message, what I don't know how to do is to get the .TLB file into the proper place, so that the C++ Compiler can find it.
I want to do this at compile time so that it will pull the generated TLB file from the C# project and will work on my build server.
I've referenced the C# Dll project as a Reference to the C++ project, and have searched the web for an answer, but alas, have found none to this point.
The answer to this question is the proper inclusion of the Additional Include Directories setting. As HansPassant pointed out in a comment..
The final answer for me was to define an include directory as follows:
$(OutDir)..\..\MyCSharpProject\bin\$(Configuration)
This works both on my individual developer system, and the build server which isn't putting any changed files into the original Source Folders, but is putting them in a BuildArtifacts folder.
I made a c# dll.but if the user want to use it in c# winforms he/she must have dll file in the exe folder.how can i do something with dll project that it automatically add dll to exe file when used in other winforms app?
is it possible?sorry if my english is not good
tnx
there are many ways.
here is a full guide:
http://msdn.microsoft.com/en-us/library/yx7xezcf(v=vs.110).aspx
I love this way to do this in code personally:
How to add folder to assembly search path at runtime in .NET?
You can save the dll in the Global Assembly cache.
Then you can refer to it in the application without needing it to be in the same folder.
http://support.microsoft.com/kb/837908
I think what you are getting at is the programmer wants to use a DLL you have provided, but does not want the DLL to be inside the same folder as the EXE file when compiled.
try this:
Embedding DLLs in a compiled executable
Yoy can embed / include DLL files inside the exe file
The key words here is Embedded DLL
I have successfully dotfuscated my .dll file to prevent it from being easily read when decompiled...But the problem is, I can't use the dotfuscated dll file because my project can't seem to understand the contents of the file... Could anyone help me please?...
You need to run the obfuscator on the final output (all of the projects together) so that it can handle references across assemblies.
Until that particular dll is obfuscated with option to be used as external library, you cannot reference it within your project.
Few obfuscator, obfuscate all the public classes & methods, hence referencing them is not useful.