Problem with create DLL with C#, Please help to advise?

[demoinvest]

Hi,

I have problem, not success with  create DLL with C#

I using Visual Studio 2019 preview, Windows 10  and use UnmanagedExport

I try to create DLL by C++, it is work, no problem but DLL I need use is C#

I create DLL with C# but when using DLL viewer check dll file, not have export function in dll (but using C++ , it show dll normal amd can import to EA)

I try use template file from article , github and read all topic on forum, but still not success both x86 and x64 

anybody success to create DLL with C#  (Visual Studio 2019)

thank you for advice