No, we can't. We have no idea what it should do!
You want working code? Start with the official documentation:
.NET programming with C++/CLI | Microsoft Docs[
^] and work your way out from there - most of the link will include sample code which - it was written by MS remember - should work.
But in all honesty, you will learn nothing that way, and the sample code will be useless to you even if it does work as you will probably have no idea what it is supposed to do or why it does work when it does it.