How to call a C# .Net component from within MatLab

The best way I found to call anything external from Matlab is to use S-functions.  I built an entire framework once by simply using S-functions to wrap my DLL functions.  I did this in C/C++ however.

I think a COM wrapper would work as you suggested.  I also think you could make an unmanaged DLL that serves as the gateway between Matlab and your managed C# assembly.  That is, Matlab would call into your unmanaged C/C++ DLL, which would in turn call into the managed C# assembly.  The first part (Matlab to C/C++ DLL) is easy.  Second part C/C++ wrapper around managed C# may take a little work.

Hope it helps

Henrici,

Thanks for your reply, I am specifically looking for a worked C# example.

Thanks

Charlie

A nice all worked out protocal for calling C# from Matlab does not exist at the moment.  I described a framework for doing it in general.  I know the pieces I described are doable, although it will take some work.  I really think this comes down to how much of this C# code  you need to call in the future.  If this is a one-time thing then I can see where you are looking for a quick fix (it doesnt't exist.)  If you foresee calling C# often, then I would take a crack at my framework (again, 100% sure it can be done.)  Maybe wait a few days to see if anyone else has a better idea.

Here is another possibility.  Try to convert your C# code to unamanaged code C++ (unfortunately, I do not think a good quality converter is free.)  Then you can call the C++ code as I described above.  Also, if this is a one-time thing, can the C# code be re-written to Matlab script or C++?  Or can you turn the problem around and let C# host Matlab?

Henrici,
Thanks for your post.
>>I know the pieces I described are doable, although it will take some work
I  guess what I'm after is someone whose done this before and has some example code they can provide.

>>Here is another possibility.  Try to convert your C# code to unamanaged code C++
Unfortunately I am required to find a C# solution.

Thanks again

Charlie

Henrici,

Thanks for the post post but:

>>Unfortunately I am required to find a C# solution.

C++ is not an option for me.

Charlie

C# from Matlab without doing anything else does not exist.  If it did, Matlab would be advertising it all over the place just like they do with mex files and C/C++.

By the way, you stated in the original post you were thinking about COM.  That surely isn't C#.  If I had known you wanted C#, and nothing but C#, I would not have bothered since it does not exist.  Why mention COM when you only want C#?