`coreclr_create_delegate` doesn't work when called from C++ code on Mac

Question

I need to call method declared in C# library from C++ code on Mac. I am using .Net Core framework 2.0.x (2.0.3, 2.0.4).

To make it work, I call coreclr_initialize which runs successfully and returns 0. I then call coreclr_create_delegate by passing required arguments as given below:

auto no_del = []( auto x ) { (void)(x); };
auto csharp_runIt = std::unique_ptr<csharp_runIt_t, decltype(no_del)>(nullptr, no_del);

int status = coreclr_create_delegate (
                                          hostHandle,
                                          domainId,
                                          assemblyName.c_str(),
                                          entryPointType.c_str(),
                                          entryPointName.c_str(),
                                          reinterpret_cast<void**>(&csharp_runIt)
                                          );

Here, hostHandle and domainId are received from coreclr_initialize. Rest of the values are: assemblyName (dll name), entryPointType (class name) and entryPointName (function name). Running it returns negative value with hex code: 0x80070002.

I am also passing library name, class name and method name as arguments. As not many have tried it, not much help is available online.

Answer 1

You need to specify the fully qualified name for that class if it is not in the global namespace. For instance, you need to set entryPointType to samplelibrary.SampleClass here.