Communicating to NET dll by class.

Hi,

Is there anyway to send a class to and from a matlab .NET dll and a C# Visual studio project?

Thanks in advance

Laurent

Answer 1

[Yash Sharma]

Hi Laurent,

Yes, it is possible to send a class to and from a MATLAB .NET assembly and a C# Visual Studio project. MATLAB Compiler SDK allows you to create a .NET assembly from MATLAB code, which can then be used in .NET applications such as those written in C#. However, there are some considerations and steps you need to follow:

Creating a .NET Assembly from MATLAB

1. Write your MATLAB code and save it in a function or class that you want to compile into a .NET assembly.
2. Use the MATLAB Compiler SDK to compile your MATLAB code into a .NET assembly. You can use the deploytool or the mcc command to do this. For example:

mcc -W 'dotnet:MyMatlabAssembly,ClassLibrary,4.0,private' -T 'link:lib' -d 'C:\MyMatlabAssembly' -v 'class{MyClass:C:\MyMatlabCode\myFunction.m}'

This command will generate a .NET assembly MyMatlabAssembly.dll that contains the class MyClass with the method myFunction.

Using the .NET Assembly in a C# Visual Studio Project

1. Add a reference to the generated MATLAB .NET assembly (MyMatlabAssembly.dll) in your C# project.
2. Add a reference to the MWArray.dll assembly, which is provided by MATLAB Compiler Runtime (MCR) and is necessary for handling MATLAB data types in .NET.
3. Use the MATLAB class in your C# code. You will need to create instances of MWArray or its derived classes (e.g., MWNumericArray, MWStructArray, etc.) when interacting with the MATLAB functions or classes.

using MathWorks.MATLAB.NET.Arrays;
using MyMatlabAssembly;

class Program
{
    static void Main(string[] args)
    {
        // Initialize MATLAB Runtime
        MWArray[] inputs = new MWArray[] { /* your input data as MWArray */ };
        MyClass matlabClass = new MyClass();
        
        // Call MATLAB function
        MWArray result = matlabClass.myFunction(inputs);
        
        // Convert result to a C# data type if needed
        // ...
            
        // Clean up
        matlabClass.Dispose();
    }
}

If you have a custom class in C# that you want to pass to MATLAB, or vice versa, you will typically need to convert the class to a compatible MWArray type (e.g., MWStructArray for MATLAB structs) before calling the MATLAB function and then convert it back to your custom class after receiving the output.

Take a look at the below documentaion which might be helpful for your implementaion.

• https://www.mathworks.com/help/compiler/mcc.html

Hope this helps!

Answer 2

[Laurent Davenne]

Thank you Yash!