MATLAB: Is it possible to use the MATLAB .NET interface to load a MATLAB Builder NE generated .NET assembly

assemblybuilderloadMATLABMATLAB Builder NEnenetnet.addassembly

I have created a .NET assembly (DLL) by using the .NET assembly target of MATLAB Builder NE using the DEPLOYTOOL or MCC functions. I would like to load this library to the MATLAB workspace and call its functions. I am able to use NET.addAssembly to load the assembly and view its classes and namespace, but I am unable to instantiate any class objects from it. For example, I may call a class constructor, but an error will result.

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This change has been incorporated into the documentation in Release 2012b (R2012b). For previous releases, read below for any additional information:

It is not possible to load a .NET assembly in MATLAB that was generated by MATLAB Builder NE. There are no workarounds.

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MATLAB: Is it possible to use the MATLAB Java interface to load a MATLAB Builder JA generated JAR package

This change has been incorporated into the documentation in Release 2012b (R2012b). For previous releases, read below for any additional information:

As seen in the error message, a JAR package generated by MATLAB Builder JA indeed cannot be loaded in MATLAB using the Java interface. There are no workarounds.

MATLAB: Can I generate a .NET dll that imports other .NET assembly

Yes, you can use external .NET dll in compiled MATLAB function.

For example, assume the name of external dll is 'dotNetExternalClass.dll'. In MATLAB function, you can load that dll with full path.

function out = compileOtherDll(in1, in2)
externalDllPath = fullfile(pwd, 'dotNetExternalClass.dll');
asm = NET.addAssembly(externalDllPath);
% do something
% ...

% ...
end

Then, compile this function as .NET assembly using deploytool. compileOtherDll.dll will be created in this case.

After that, in Visual Studio, it's needed to add compileOtherDll.dll and $MATLAB_INSTALL\toolbox\dotnetbuilder\bin\win64\v4.0\MWArray.dll as references and add "using" in C# codes.

using MathWorks.MATLAB.NET.Arrays;
using compileOtherDll;

After building this C# codes, you need to place the external dll (dotNetExternalClass.dll) in the same folder of exe file.

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Related Solutions

MATLAB: Is it possible to use the MATLAB Java interface to load a MATLAB Builder JA generated JAR package

MATLAB: Can I generate a .NET dll that imports other .NET assembly

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