Using open62541 in winforms application (C#) to read and write data from OPC UA Server

Question

I wrote a application with winform. my client application must be connect to an OPC UA server then write/read variables of OPC UA protocol. I choose open62541 for this situation, because open62541 is free and easy to use (if anyone have better solution, please say). in first step I downloaded open62541 source code. I changed this line of CMakeLists.txt to get dll and .c/.h file:

option(UA_ENABLE_AMALGAMATION "Concatenate the library to a single file open62541.h/.c" ON)
option(BUILD_SHARED_LIBS "Enable building of shared libraries (dll/so)" ON)

Then compile source with this command:

cd open62541
mkdir build
cd build
cmake.exe .. -G "Visual Studio 16 2019"

And then open open62541.sln in "Visual Studio 16 2019" and compile with release 64bit config. now I have open62541.dll/.c/.h/.lib and copy dll file to "WindowsFormsApp1\WindowsFormsApp1\Libraries", but when i try to add open62541.dll to my project (Project>References>add references>Browse), I get this message

Answer 1

If you want an C# native stack use the OPC Foundation stack. It is also free and is a reference implementation. You can find samples for the stack here

The open62541 is greate but it is written in C not in C#.So I think you need to manage/wrappe the code. Maybe the reopen62541 project can helpt you.