How to debug C# .NET assembly called from MATLAB?

I'm trying to use some .NET assemblies from MATLAB but I am encountering a MATLAB System Error.

I was wondering if there is some additional debug logs I can turn on to see the details of the system error to determine what in my .NET assembly might be causing the crash.

Answer 1

[MathWorks Support Team]

Follow the steps below to debug a .NET assembly called from MATLAB:

1) Compile the C# code in 'Debug' mode in Microsoft Visual Studio. 

2) Select 'Attach to Process' from the 'Debug' tab in Visual Studio and select the MATLAB process from the 'Available Processes' window. If there is more than one MATLAB process, you can identify the process ID of interest by running one of these MATLAB commands.

(R2025a and later) 

matlabProcessID

(R2024b and earlier)

feature getpid 

3) Place a break point at the line where you wish the debugger to stop and call it from MATLAB.