Calling C# dll from C++

Question

I have a native C++ DLL, and I want to import a C# DLL and use some of its functions (for example connecting to a database).

Now I have read that you can turn the DLL into a TLB COM file, and I have done that no problems. My problem lies with the C++. To call that TLB file I need to set CLR support. I use themida to help secure all my DLL's as well as PEC. They do not support .net DLL's and when I enable CLR the programs recognize it as a .net DLL.

Is there anyway to call a c# function inside a .net DLL from inside a native C++ DLL without enabling CLR?

Yochai Timmer · Accepted Answer · 2012-03-17 17:41:18Z

4

The best way in my opinion is to crate a C++/CLI lib that you can use to communicate between the layers.

This 3rd party library will be compiled with /clr enabled.

Then you can use the header definitions to the proper c++ function wrappers to call the C# functions.

C++/CLI can help you manage the call just the way you want it, and let you design the type casts the way you want them.

answered Mar 17, 2012 at 17:41

Yochai Timmer

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1 Comment

Ed Bayiates Over a year ago

+1. I would say that Yochai's answer isn't just the best way, it's also the only reasonable way. I've done this many times and nothing else worked.

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