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Using C# functions and forms in Matlab

version (8.91 KB) by Dirk-Jan Kroon
This script shows how C# functions/classes can be used in Matlab


Updated 26 Sep 2007

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This script shows how C# functions/classes and forms (gui) can be used in Matlab.

The zip contains:
- a example c# class (ComMatlab.cs) with different inputs and outputs functions.
- a info_ComMatlab.txt with the commands how to compile and register a c# activex control
- a ComMatlabtest.m for testing the c# functions.

- a example c# class (MatlabGUI.cs) which creates a form for user input (uses the other MatlabGUI cs files)
- a info_MatlabGUI.txt with the commands how to compile and register a c# activex control from multiple .cs files
- a MatlabGUItest.m for testing the c# userinput Form

(The MatlabGUI Form is designed with Visual Studio 2005)

Cite As

Dirk-Jan Kroon (2021). Using C# functions and forms in Matlab (, MATLAB Central File Exchange. Retrieved .

Comments and Ratings (8)

Varsha Fand



I was wondering if there's any newer version of this process available.

It doesn't seem to work for me, mainly because of the lack of my knowledge on how to compensate for the differences of MATLAB 2015b vs 2007b as well as the differences in Visual Studio between 2007 and 2016.

Yongliang Li

For 64-bit OS, use the regasm resides C:\Windows\Microsoft.NET\Framework64\v4.0.30319 folder


I tried to configure MSVC to compile the dll (used File->New->Project->CisualC#->Class Library) and got the error

>> ComMatlabtest
??? Error using ==> actxserver at 91
Server creation failed. Invalid ProgID 'ComMatlab.ComMatlabClass'

Error in ==> ComMatlabtest at 7
net = actxserver('ComMatlab.ComMatlabClass'); % Load the ActiveX ComMatlab

I traced it down to a project properties setting under "Application" where you must select the "Assembly Information" button and then select the "Make assembly COM-Visible" checkbox.


Dear Dirk-Jan Kroon,
I found my pb, the code works fine now. The pb was that I did not subscribe to COM Interop in the project properties.
Thanks again for this very useful post.


Dear Dirk-Jan Kroon,
Thanks for your post. Compiling is ok but when I try to use in Matlab, i got following error :
>> net = actxserver('MatlabGUI.FormControlClass');
??? Error using ==> feval
Server Creation Failed: Le fichier spécifié est introuvable.
If you could help, would be nice. Thanks


Ofer Fridman


MATLAB Release Compatibility
Created with R2007b
Compatible with any release
Platform Compatibility
Windows macOS Linux

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