I managed to create and manipulate with AutoCAD files with this library (wpf app)
Found it in this post
Howewer, to use this library, AutoCAD has to be opened (window visible) while program does coded drawing.
This is fairly old post (5 years) so the rest of it does not fulfill my wishes. And maybe during this 5 years something came up.
Does anyone know is it possible and how to create and/or manipulate .dwg files on server using asp.net?