What are you wanting to do? I see your pseudo-code but I'm not sure why you think a cast is necessary. Mark "Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

unfortunaly no :( same error this is where i am in the moment : myType = SampleAssembly->GetType("Memory.What"); myObj = System::Activator::CreateInstance( myType ); System::Reflection::MethodInfo^ mi = myType->GetMethod("Ver"); mi->Invoke(myObj , nullptr ); so i can call the methode but its not to elegant there muss by some other way so that i can call it like : LoadedDLL->Ver();

hup some how i didnt saw the 2 abowe replays :confused: this managed unmanaged clr cli mfc ... is so confusing to me in the moment :confused: no idea in what i am programing :^) just that i am using visual c++ :-D

Cool thx a lot ! :-D

You need to define operator* and operator+. Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

:-D thx a lot ! exctly what i need

:laugh: Filet-o-Fish is on me! Yes, you can. Built in types automagically convert back and forth from managed types. You had me worried - I had to check on VS 2005 real quick (I'm still on 2003 .NET) to see if it didn't work anymore. That would have sucked :) Mark "Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder