How to call .dll without header file

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Kiruthika
Kiruthika 2025-5-7
评论： Kiruthika 2025-5-8
DLL is generated from C# code. So there's no header file. I want to call this dll from matlab.
Loadlibrary requiries .h file which is not available in my case. What is the best way to run the dll from matlab.?

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Walter Roberson
Walter Roberson 2025-5-7
The header files is necessary for identifying function "signatures" -- knowing what datatype each function parameter is.
So the answer is "You don't call a C# dll without a header file. Write the header file yourself if need be.
The main alternative is to create the C# as a .NET assembly and use https://www.mathworks.com/help/matlab/ref/net.addassembly.html
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Kiruthika
Kiruthika 2025-5-8
Hi Walter,
Thanks for replying. I used addassembly. It loads the all the structures, classes, etc. How do I call the methods from the dll.?
I'm not very clear on how to instantiate the class and use it. Attached the screenshot of the workspace after running addassembly and the c# code.
I'm trying to connect to http link. Any leads will be appreciated.
Thanks.

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TED MOSBY
TED MOSBY 2025-5-7
Hi Kiruthika,
Loadlibrary is only for native (un‑managed) DLLs. A DLL that comes from C# is managed code—a .NET assembly—so you should use MATLAB’s built‑in .NET interface instead of loadlibrary.
dllPath = fullfile('C:\path\to','MyDotNetLib.dll');
asmInfo = NET.addAssembly(dllPath);
Here's a link to the above MATLAB function: https://www.mathworks.com/help/matlab/ref/net.addassembly.html
Hope ths helps!

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