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Creating Assembly Language DLL Modules for Windows

by CMalcheski

A full-scale all-assembly .DLL module for the situations that warrant it can offer a tremendous power and speed boost over using inline ASM or intrinsics alone.

Easy ToolStrip - Let your UserControl display beyond the Containers/Form limits (C# and VB.NET)

by Avelino Ferreira

The easiest way to implement the ToolStripControlHost and ToolStripDropDown classes, in a UserControl, in order to display a Container/Control beyond the limits of its Parent Container and Parent Form, with very few lines of code. Let's uncomplicate ...

Designing the Interface of DLLs in C/C++ Projects

by pasztorpisti

An advice to make your DLL interface more attractive and easier-to-maintain even in cross-platform projects

Voice and Text Conferencing Library

by Irfan alam

A library for creating a voice and text conferencing application

Latest Articles

Introduction to Native DLLs - Part 2: Exporting Functions

by Bruno van Dooren

An introduction to exporting functions from DLLs

Introduction to Native DLLs - Part 1: Boilerplate

by Bruno van Dooren

In this article, I explain how to create win32 style DLLs and what the various significant intricacies are.

How to Ensure Proper Dynamic Library Boundary Crossing for Objects using Smart Pointers' Custom Deleters

by Philippe Cayouette, Sebastien Gibeau

Solution using smart pointers' custom deleters

Creating a Resource-Only DLL

by vblover Programmer

Create a resource-only DLL

All Articles

DLL

Introduction to Native DLLs - Part 2: Exporting Functions

25 Jan 2024 by Bruno van Dooren

An introduction to exporting functions from DLLs

Windows 10 system.drawing is corrupted

19 Jan 2024 by OriginalGriff

We aren't tech support for MS: they have a huge number of people (most of which are pretty technical) who do just that and can really help - and they can dive into your PC with your permission and work out what is actually wrong and help fix it....

Windows 10 system.drawing is corrupted

19 Jan 2024 by BobbyStrain

Is there a way to fix the corrupted files? I have a laptop with a good file. Can I simply replace the corrupt file with the good one? What I have tried: I haven't tried anything. I use my laptop for things that don't work on the corrupted desktop.

Introduction to Native DLLs - Part 1: Boilerplate

11 Jan 2024 by Bruno van Dooren

In this article, I explain how to create win32 style DLLs and what the various significant intricacies are.

Make a C# call to "C" DLL function(api) work.

20 Nov 2023 by samthelab

Okay OriginalGriff, RSVP I have written a C# front-end program, in which calls a bunch of DLL "C" functions(API's). and the communications between the two parts has been great. But recently, I was working on the program and must have done...

Make a C# call to "C" DLL function(api) work.

19 Nov 2023 by Dave Kreskowiak

Typically, "BadImageFormatException" means you're trying to mix 32- and 64-bit code in the same process. You're either trying to use 64-bit .DLL's in your app that's running as 32-bit, or you're trying to use 32-bit .DLL's in a 64-bit app. You...

Why my C# DLL does not work in MQL programming language when I import it?

3 Nov 2023 by Member 11400059

I created DLL with C# .NET Framework 4.5 and the build on Any CPU. I want to use this DLL to read the motherboard and Hard Drive Serial number. After I copy my DLL to the Library Folder of Meta trader (for mql4 and 5) and import it to my Custom...

Why my C# DLL does not work in MQL programming language when I import it?

2 Nov 2023 by Member 11400059

Thank to @Dave-KreskowiakWatch I find the MQL5 solution. and now I Find the solution for mql4 too. you can use this 2 link for the start: https://www.mql5.com/en/forum/353293[^] Calling a DLL from MQL | Andres Jaimes[^] first of all we should...

Why my C# DLL does not work in MQL programming language when I import it?

2 Nov 2023 by Dave Kreskowiak

Where to begin. Basically, from the examples I've seen, you've got most of your code wrong to work with MQL5. First, the methods in your SystemInfo class have to be marked "static": using System.Management; namespace SystemInformation { ...

Why my C# DLL does not work in MQL programming language when I import it?

2 Nov 2023 by Richard MacCutchan

Sorry, I know nothing about MQL. However looking at the code you have, you are declaring the two methods as local to the module that you call them from. But since those methods do not exist, that is probably the cause of the error. The #import...

What does this error mean. Warning C4747

24 Oct 2023 by samthelab

What does this mean and how do I fix it?? 1>C:\dllmain.cpp : warning C4747: Calling managed '_DllMain@12': Managed code may not be run under loader lock, including the DLL entrypoint and calls reached from the DLL entrypoint...

How to create a DLL with panels as dialogboxes and call it from an aspx page

7 Oct 2023 by MichaelEriksen

I am developing on a c# web project with aspx pages and need to create a dll with several dialogboxes made of Panels and DIV's. It is possible for me to create a library and call it from the codebehind in my mainproject. But I can't put a DIV,...

Dependencies in own NuGet packages - a dependency is not included

17 Aug 2023 by temuco

All under .NET 7.0 Given is a custom library isential.crypt.dll that contains no external dependencies. A NuGet package was created from it and stored in a local package source. A second custom library named isential.MySqloverSsh.dll uses three...

Dependencies in own NuGet packages - a dependency is not included

16 Aug 2023 by temuco

I noticed that there is a difference between the version of a NuGet package and the version of the assembly it contains. Previously, I had set the assembly version to "1.0.*", which meant that it was automatically incremented with each build....

Can a DLL crash in my program crash my program which is loading it ?

21 Jun 2023 by YrthWyndAndFyre

A DLL becomes part of your process once loaded. If every action you take related to the DLL (including loading/unloading, if applicable) is wrapped in a try...catch() block, any exceptions that escape from the DLL will be trapped by your process...

Can a DLL crash in my program crash my program which is loading it ?

21 Jun 2023 by Learning Cow

Hi All, I have a dll , of which an API I am using in my app , I am expecting a crash in DLL when a large data is fed to the API , will this also crash my app ? What I have tried: I am trying to write a fuzzer to detect crashes in DLLs

Can a DLL crash in my program crash my program which is loading it ?

21 Jun 2023 by CPallini

Yes. The DLL code is mapped in the process memory space, see, for instance: About Dynamic-Link Libraries - Win32 apps | Microsoft Learn[^].

How to access types from compiled WPF project loaded as DLL roslyn compiler

19 Jun 2023 by Wassa Bizo Ismaila

I have a WPF project that I need to compile, load as a DLL file, and access its components programmatically. I'm currently using the Roslyn Compiler in my function, but I'm open to alternative solutions if they can help resolve my issue. The...

The .dll files of supportive projects cannot be read while running main project, showing access denied

9 May 2023 by Member 11072126

Hi All, I am currently working on a project where there are many .dll files to be read from the main application. The other supportive projects are build successfully and the .dll files are also created. While running the main application, its...

Why return only first character when convert cstring to LPCSTR

14 Apr 2023 by Mạnh Lê

Why Return only First Character when Convert Cstring to LPCSTR What I have tried: Dear guy I'm convert Cstring to LPCSTR with some code below CString strData1 = L"ABCDE"; LPCSTR spData = (LPCSTR)(LPCTSTR)strData1; MessageBox(NULL, strData1, L"CString strData", MB_OK); //=> ABCDE...

Why return only first character when convert cstring to LPCSTR

14 Apr 2023 by Member 11658520

one more thing , when you are using function check there should be a function for unicode also.. like in registry there is a function RegCreateKeyExA but for Unicode there is another version of same function called RegCreateKeyExW Mumtaz Ali

How to Ensure Proper Dynamic Library Boundary Crossing for Objects using Smart Pointers' Custom Deleters

24 Feb 2023 by Philippe Cayouette, Sebastien Gibeau

Solution using smart pointers' custom deleters

Microsoft.Office.Interop.Word without installing MS Office

21 Feb 2023 by Member 15930906

Is there a thrid party library for MS office that is free of cost?

How to convert a C++ code to C#

7 Feb 2023 by mohammad hasani

I have a C++ class and I want to import it into C#. class __declspec(dllimport) string { public: string(); string(const char*); string(const std::string&); ~string(); int size() const; int lenth() const; const char* c_str() const; ...

Could not load file or assembly 'netstandard, version=2.1.0.0, culture=neutral, publickeytoken=cc7b13ffcd2ddd51' or one of its dependencies

26 Jan 2023 by DrgIonuţ

I am trying to establish a connection to InfluxDB database. After I publish my c# MVC app on IIS and run it, I get this error: Quote: System.IO.FileLoadException Message : Could not load file or assembly 'netstandard, Version=2.1.0.0,...

Could not load file or assembly 'netstandard, version=2.1.0.0, culture=neutral, publickeytoken=cc7b13ffcd2ddd51' or one of its dependencies

26 Jan 2023 by Richard Deeming

You're referencing a library or NuGet package which is build for .NET Standard 2.1; that library doesn't support any version of .NET Framework. .NET Standard | Microsoft Learn[^] You need to check your project's dependencies.

Could not load file or assembly 'netstandard, version=2.1.0.0, culture=neutral, publickeytoken=cc7b13ffcd2ddd51' or one of its dependencies

26 Jan 2023 by OriginalGriff

You are specifically telling it to load an assembly "netstandard" Version=2.1.0.0 and the error message is pretty specific: The located assembly's manifest definition does not match the assembly reference. Which means that the versions don't...

Free library C# DLL memory

20 Jan 2023 by JudyL_MD

If you use the DllImport mechanism [DllImport("DllTeste.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Ansi)] public static extern IntPtr TesteEnviaXml(); to create your access to the functions in DllTeste.dll, you...

Free library C# DLL memory

20 Jan 2023 by Cristiano Rogoy 2023

Hello, I have a dll made in Delphi that is working perfectly, I use its functions within C# at runtime, but I am not able to clean it from memory. What I have tried: [DllImport("kernel32.dll", SetLastError = true)] [return:...

Free library C# DLL memory

18 Jan 2023 by Chris Stols

you neeed to release the dll running under task manager

Work with different dlls and linked source code

8 Jan 2023 by RaHoCodeProj

Hi I have 2 projects with same linked source code. I gave similar dll same AliasName. On each project switch, I have to swap the header in my cs-files. What can I better do? What I have tried: extern alias AcMgdCore; extern alias AcMgd;...

Work with different dlls and linked source code

8 Jan 2023 by Michael Haephrati

I agree with Gerry that a Preprocessor Directive, such as #if ... would be the first choise. Other options can be: - Maybe create common header that will include all the necessary headers for both projects. This way, you only have to include a...

Error C4273. 'Dllclass::dllclass': vinculación de DLL incoherente. Compilación de una DLL en cl.exe, C++.

1 Jan 2023 by merano99

Richard has already described the first obvious error. The error messages with the inconsistent DLL bindings disappear as soon as the functions are declared with "dllexport". After that there can still be problems with the path. While it is...

Error C4273. 'Dllclass::dllclass': vinculación de DLL incoherente. Compilación de una DLL en cl.exe, C++.

1 Jan 2023 by JESUS CORTES CAMACHO

Hola estoy aprendiendo a crear una DLL y luego utilizarla, C++ este es mi primer ejercicio. Lo estoy probando en línea de comandos "cl.exe". EL resultado es realizar operaciones básicas. En la línea de comandos escribo cl /c dllmain.cpp Esto para...

Error C4273. 'Dllclass::dllclass': vinculación de DLL incoherente. Compilación de una DLL en cl.exe, C++.

31 Dec 2022 by Richard MacCutchan

As far as I can see you did not define BUILDING_DLL when you compiled the dll code. See Creating and Using a Dynamic Link Library (C+) | Microsoft Learn[^].

Creating a Resource-Only DLL

15 Dec 2022 by vblover Programmer

Create a resource-only DLL

PDF data file creation in unity C# in webgl build

3 Oct 2022 by Qasim Ali Oct2022

I have an issue which I don't know where to start to solve I have to make PDF data file using unity c# in webGL build I already done this with HTML but is there any way I can do this with unity C#. What I have tried: I tried some basic threads,...

Access functions in a VB6 DLL from Python

26 Sep 2022 by MrG_

For what it is worth, I managed to resolve this. Extracts of the relevant code: from comtypes import c_double, c_short, client from ctypes.wintypes import VARIANT_BOOL from comtypes.automation import _midlSAFEARRAY my_dll =...

Access functions in a VB6 DLL from Python

26 Sep 2022 by MrG_

Hi all, I have a 32bit VB6 DLL which has two functions. I want to access those functions from my 32bit version of python. First issue is that I can't seem to see the functions when I load the dll: from ctypes import * dll =...

How to add the main project as reference to another project (.dll) in the same solution?

23 Jul 2022 by ernteSKY

I have my Main Project where are some Forms and Classes. I also created some Shared Library projects (.dll) in the same Solution. I can access any kind of Shared Library projects from my Main Project. Of corse all of them added as a Reference...

How to add the main project as reference to another project (.dll) in the same solution?

23 Jul 2022 by Dave Kreskowiak

DO NOT DO THIS! Setting a reference from the Shared Library project to the main project is indicative of bad design, violating encapsulation and separation of concerns. The library project should know nothing at all about whatever project is...

How to add the main project as reference to another project (.dll) in the same solution?

23 Jul 2022 by OriginalGriff

The problem is simple: the main project references the shared project already - so when you try to add a reference to the main project in the shared project it creates a circular reference: A refers to B which refers to A which refers to B which...

Can VB.NET (under VS 2022 or 2019) access 64 bit dlls?

24 Jun 2022 by lewist57

Simple, and somewhat naïve, questions: 1) Apparently one can generate 64 bit .exe from VB.NET in Visual Studio 2022; how about VS 2019? 2) Assuming one generates a 64 bit .exe for VB.NET, can it access 64 bit DLLs (generated in other...

Can VB.NET (under VS 2022 or 2019) access 64 bit dlls?

24 Jun 2022 by Dave Kreskowiak

This is not imposed by VB.NET or Visual Studio. WINDOWS does not allow mixing of architectures in the same process. No, you cannot load a 64-bit .DLL in a process running 32-bit, and the other way around. The languages the .DLL's and main...

Class not registered error

22 Jun 2022 by Member 11478798

Hi, I have an application that was written maybe 10 years ago. Runs fine on a xp machine. When I install it on windows 10 it runs but get the following error: retrieving the com class factory for component with clsid failed due to following...

Class not registered error

22 Jun 2022 by OriginalGriff

In addition to what 0x01AA has said, also check the mode of the DLL: given it's age and target OS it's almost certainly a 32bit DLL - and unless your app is also compiled for 32bit it won't work as you can't mix the two unless the DLL is data...

C# unmanaged DLL Export / Import in C++

20 Jun 2022 by Martin Fisher2

There must be a match between the configuration of the managed code and the DLL, so you should create different versions of the DLL for Release/x86 (32 bit), Debug/x86, Release/x86 and Release/x64

C# unmanaged DLL Export / Import in C++

19 Jun 2022 by Member 10854414

0 down vote favorite I have following Code in C#: (I used R.Giesecke Dllexport Template to create a unmanaged Dll with C#... it creates me a ".lib" and ".dll" file with (managed) C# )//UnmanagedExports.csusing System;using System.Collections.Generic;using System.Text;using...

Moq is creating types that are interfering with my unit tests

7 Jun 2022 by blog.vitorrubio.com.br

I had same problem and tried some workarounds 1) make your plugin classes to be necessarily sealed and filter only by sealed types var types = AppDomain.CurrentDomain.GetAssemblies() .SelectMany(s =>...

Moq is creating types that are interfering with my unit tests

7 Jun 2022 by C Pottinger

I am changing a project of mine to use plug-ins for certain components (called FeedReaders), instead of having them defined in the main solution. I am following the technique present here by Duke of Haren. I am also using NUnit as by unit testing...

How to convert a C++ code to C#

6 May 2022 by KarstenK

Importing an class isnt always the best idea, but importing the data is more simple. You cant import classes with members of classes which arent supported. Read my article Calling-All-Stations and its code about a possible solution. When...

Visual basic 6 check if DLL exists

18 Feb 2022 by Member 14359403

I am in need of a little help, i'm trying to exit sub, if a test.dll is detected (test.dll is just example), and if the dll does not exist, just continue to do the other things in the code. I'm trying to do it like this, however even when the dll...

Visual basic 6 check if DLL exists

18 Feb 2022 by Andre Oosthuizen

You can use the following, should work fine - Sub main() If Not GetModuleHandle("test.dll") = Nothing Then Exit Sub Else ''Do other things End if End sub

PDF File Writer C# Class Library (Version 2.0.0)

18 Feb 2022 by Uzi Granot

PDF File Writer is a C# .NET class library allowing applications to create PDF files. The code was developed for VS 2022 and .NET6. The latest update is a major upgrade.

Visual basic 6 check if DLL exists

17 Feb 2022 by Richard MacCutchan

The GetModuleHandle function (libloaderapi.h) - Win32 apps | Microsoft Docs[^] returns either NULL (0) if the dll cannot be found, or a Windows HANDLE if it is found. So comparing it with the value 1 is unlikely to work. You should compare it not...

Loadlibrary fails or succeeds on different pcs

10 Feb 2022 by dj4400

Hi all, I am working with VS2017 in C++. I have a 3rd party DLL that I load in my program. When running my program on my PC the DLL is loaded correctly. I tried to run my program (compiled in release mode) on another PC, but the DLL failed to...

Loadlibrary fails or succeeds on different pcs

10 Feb 2022 by dj4400

I opened the DLL in Dependency Walker on the target PC and there was no red markings So i tried the dumpbin in the 1st PC to see what dlls does it use and i saw it was using just 2 dlls. I searched them on the target PC and saw that one WAS...

Loadlibrary fails or succeeds on different pcs

9 Feb 2022 by steveb

Get the "Dependency Walker" tool(from Microsoft by Steve Miller) for both 32 and 64 bit. Go to your other failing machine and drop that dll into the Walker window. You should see all the dependencies. If any are missing then you won't be able to...

Loadlibrary fails or succeeds on different pcs

9 Feb 2022 by Dave Kreskowiak

It has nothing to do with the IDE being installed. This usually comes down to your code being compiled to target "Any CPU", which means it runs as a 32-bit app on 32-bit Windows and a 64-bit app on 64-bit Windows. The problem comes down to the...

Mem load upx DLL (without loadlibrary)

6 Feb 2022 by merano99

There seems to be programs that can do that. I found this with google. I don't know if it works. DLL to Lib - Convert DLLs into static libraries[^] UPX is not a good protection against reverse engineering, since UPX-packed programs can be...

Mem load upx DLL (without loadlibrary)

6 Feb 2022 by Member 15198811

I wrote a simple network assistance. The login verification code identification uses the wmcode.dll provided by others, but this dynamic library is upx3 91 compressed, anti-virus software always indicates that it is poisonous, so I want to...

Get array from C++/C to C# using DLL

24 Dec 2021 by suleman Ali kazmi

Hello, I am very new to C# and C/C++. I wrote a code in C that stored 2 variables in an array and return the array. Using the P/invoke method I created a DLL library of this C function and imported the library to C#. While calling array, I am...

An MSVC environmental question

15 Dec 2021 by Member 15028314

I like so many other developers, develop useful tools which could be contained within these windows DLL files. But the question is; how can we(as developers) add our own new software API's up under our MS Visual Studio environment(s), so we can...

Is there a way to copy the XML file of a DLL to the output directory of any application that will use that DLL

13 Dec 2021 by Member 12704287

I have a class library project which has a .xml file. It's property is set to "Copy Always" to "Output Directory". After building the project the file is getting copied to the output directory.but when I'm using this dll in other applications,the .xml file is not being copied to their output...

Is there a way to copy the XML file of a DLL to the output directory of any application that will use that DLL

13 Dec 2021 by Member 13202792

you can use the post build if you are using VS, you can add a post build event like xcopy "$(ProjectDir)Views\ModuleAHome\Index.xml" "$(SolutionDir)MEFMVCPOC\Views\ModuleAHome\" /Y /I

In which process this hook code is actually called?

2 Dec 2021 by Avtem

I wrote a DLL with hook of type WH_GETMESSAGE. What I want to do is store an std::vector inside that DLL and being able to manipulate it from my app. But the problem is that when my app calls DLL function createMyObjects() vector's size...

In which process this hook code is actually called?

2 Dec 2021 by Rick York

Hook procedures are called in the context of the process that generates the message. Here is what the docs (Hooks Overview - Win32 apps | Microsoft Docs[^]) say on the topic : Quote: A global hook monitors messages for all threads in the same...

Run NET 4.5 DLL in Visual Basic 6.0

26 Nov 2021 by Ejrr1085

How to run a dll created with Visual Studio 2012, .NET Framewotk 4.5 in Visual Basic 6.0?

C# load DLL manually with loadlibrary before the CLR does

28 Oct 2021 by DevJr

Hello, i'm pretty new at C# (using VB.Net before), i wanted to use method from Benoit Blanchon from this post: .net - Using a 32bit or 64bit dll in C# DllImport - Stack Overflow[^] But i'm not sure about Quote: can be done in the static...

C# load DLL manually with loadlibrary before the CLR does

28 Oct 2021 by Dave Kreskowiak

I think you're looking for, though this may not work at all. You may have to move the code to a class separate from Program: (I don't have time to test this) namespace TestApp { static class Program { ... Your DllImport line(s)...

Private DLL in windows?

8 Oct 2021 by Avtem

So, i've been developing a DLL to use it in all my applications. As far as i know, you can use DLL's functionality without having to link it at build time. AutoHotKey seems to do exactly that (using DLL's functionality having only .dll file). So...

Private DLL in windows?

8 Oct 2021 by CHill60

Assuming you are meaning that you only want your applications to be able to use this DLL and no-one else's then you could require a licence key to be part of every call into it. Starting point A simple software key useful to protect software...

Private DLL in windows?

7 Oct 2021 by den2k88

Not really, DLL are also konow as "shared libraries". The only thing you can possibly do is edit the DllMain in order to recognize somehow the process that's trying to link it and prevent access on the basis of that. I never did something like...

Private DLL in windows?

7 Oct 2021 by OriginalGriff

No, not really. A DLL is a library file - in effect it's an executable that lacks the "stub" that tells Windows where to start running the code. As such, you can't encrypt it without Windows not knowing what to do with it! And DLL files are -...

Cn = new odbcconnection("DSN=tallyodbc_9000") tally connection is giving me error in DLL file but in VB.NET application same connection string runs fine

10 Sep 2021 by ATISH PAI DUKLE

i m trying to develop a dll which will pull data from tally. in vb.net windows application project it runs. But when i use same code to develop a dll which is .netframework 4 build and registered in 64bit .netframework64 folder it gives error as...

Cn = new odbcconnection("DSN=tallyodbc_9000") tally connection is giving me error in DLL file but in VB.NET application same connection string runs fine

10 Sep 2021 by Dave Kreskowiak

It's possible the Tally driver you're using is 32-bit only. Recompile your .DLL to target x86 instead of x64 or AnyCPU and give that a try.

How to reference private library in debug/release mode

28 Jul 2021 by acalafiore

Hi all, first time asking a question but I wasn't able to find a solution to my problem yet. We are starting a new project in .NET and we choose to divide it in differente libraries to maintain it easily. Or so we hope. To keep it as simple as...

How to reference private library in debug/release mode

28 Jul 2021 by acalafiore

I have chosen to include in each solution the project needed for references. This way there are no missing libraries while running. Not really what I wanted but it's the easiest way.

How to reference private library in debug/release mode

25 Jul 2021 by Chris Copeland

.NET optimizes out library references where they haven't been used. So if your "LibraryA" references a particular package but chooses not to use it, it may be optimized out of the DLL when compiled in release mode. I think the correct approach...

Convert VB dll to VB source code

25 Jun 2021 by ♥…ЯҠ…♥

Hi everyone, I have a dll which is created using VB6.0. But i do not have source code for the particular dll file. I want the source code for that. I tried certain decompilers which my friend suggested to me. But i am not satisfied with the conversion. The code obtained is native...

Sendinput() doesn't work internally!

7 Jun 2021 by KarstenK

You better send the keystrokes as array. Read the documentation and example. And check GetLastError when it doenst work. I guess you havent the access rights or the code is somehow protected against it.

Sendinput() doesn't work internally!

6 Jun 2021 by den2k88

For the sake of science only, consider that SendInput sends keystroke events to the process window, which are processed by the main window function (message pump). Games usually manage their input with DirectInput, so your solution is bound to...

Sendinput() doesn't work internally!

6 Jun 2021 by OriginalGriff

So ... you're trying to cheat a game, and your crude code doesn't work. Do you think that is something legitimate - no, you don't because your complaint about other ways is "many of WINAPI functions used for it are detectable!" And justly so....

How to convert a C++ code to C#

1 Jun 2021 by C^hris L^osinger

I suspect you're going to have to create a DLL that can talk to the C++ DLL, and which exports a plain C version of the API. Then, you can use that DLL from C#. C++ C C#

How to convert a C++ code to C#

1 Jun 2021 by Richard MacCutchan

You cannot import a C++ class into C#. The two languages are completely different and C++ runs under native Windows, while C# requires .NET. C# programs can access C-style functions via Platform Invoke (P/Invoke) | Microsoft Docs[^].

How to convert a C++ code to C#

1 Jun 2021 by Chris Copeland

I feel like this is a follow-up to the other question asked here[^], why didn't you just put a comment on that question? As far as I'm aware you cannot share classes between C# and C++, it's just not a supported option. As I mentioned on the...

How to port C++ code and DLL to C#

31 May 2021 by mohammad hasani

Hello, I have a C++ project which I want to convert into a C# project. I've converted the DLL calls and codes but when I run the C# version sometimes it runs and sometimes it gives me System.AccessViolationException and jumps out of the program...

How to port C++ code and DLL to C#

31 May 2021 by Chris Copeland

I don't believe that C# has the capacity to automatically understand what a string type is in C++, it's natively unable to convert a C# string into a C++ std::string or otherwise. Instead of using base::string& as the last parameter consider...

How to port C++ code and DLL to C#

31 May 2021 by KarstenK

You must take with string between C+ and C#. Here is working code C# interoperation article which concreates on a simple and working interface. When using C++ strings in C# than you must use these bstrings else you will fail.

Dll import error in unity

20 May 2021 by Member 15134456

Recently I am making a UI asset for Unity. I used Unity 2020.1.0f1 for making and testing primarily. I now have a project in Unity 2021.1.3f1 and I want to use my UI asset. This asset is a unitypackage and contains 3 DLLs (1 C# DLL, 2 C++/CLI...

Need a clarification using jni

9 May 2021 by Member 15076657

I am using this as a reference to call my java class inside C program. But , JVM is not launching. Here is my code for launching jvm.

Need a clarification using jni

9 May 2021 by Richard MacCutchan

I do not know where you found that code but the official documentation is different: The Invocation API[^]. Also why do you write: mbstowcs(t, "C:\\Program Files (x86)\\Java\\jdk-16.0.1\\jre\\bin\\server\\jvm.dll", 400); jvm_dll =...

Intelligent Combobox for MySQL/SQL Server Database Applications using VB.NET/C#

8 May 2021 by Ralf Meier, Shah Samiur Rashid

Codeless Combobox for VB.NET/C# platform with MySQL/SQL Server database applications

How do I use C# DLL in C++ unmanaged code

1 May 2021 by dj4400

I am looking for an example or a walkthrough for creating a c++/cli wrapper for a c# dll to be used (loaded statically/dynamically) in an unmanaged c++. I found examples of a wrapper for the other way around (c++ dll to be loaded in c#) but none...

How do I use C# DLL in C++ unmanaged code

1 May 2021 by OriginalGriff

See here: Calling C# .NET methods from unmanaged C/C++ code[^]

Access violation reading location 0x00000000 when calling managed code from unmanaged code

3 Mar 2021 by Member 14649480

Hi, I have developed a c# dll that makes http reqest using System.Net namespace. If I call the dll methods from an c# programm everything workes fine but i need to use this dll from native c++ code. For this i used COM interop service. All goes...

Access violation reading location 0x00000000 when calling managed code from unmanaged code

3 Mar 2021 by OriginalGriff

Firstly,you aren't calling GetResponseAsync in that code. Secondly, half the other stuff we have no idea what exactly they are: JObject, what is returned by your GetResponse call. Thirdly, why are you preparing a byte array version of your...

How to read string table from mfc DLL?

1 Mar 2021 by Fazi_13

Hai i am using console application in c++,in windows application MFC dll contains string table assume like this i will un rar the dll so some files are extracted in that (string.txt)will be there in that ID and values will be there in the same...

How to read string table from mfc DLL?

28 Feb 2021 by Richard MacCutchan

In order to find all resources of a type you need to enumerate the names in the type. See EnumResourceNamesA function (winbase.h) - Win32 apps | Microsoft Docs[^].

How do I implement shared memory in a shared regular MFC DLL

26 Feb 2021 by Member 15011436

Hi, I am trying to follow Using Shared Memory in a Dynamic-Link Library - Win32 apps | Microsoft Docs[^] This lesson says to use BOOL WINAPI DllMain(HINSTANCE hinstDLL, // DLL module handle DWORD fdwReason, // reason...