This should gist should help you in creating a local development environment that allows the debugging of Visual Studio 2017 inside of Parallels (in my case running Windows 10)
The result of this enables you to debug Visual Studio through the Mac bridge, e.g. selecting debug in Visual studio, and the default web browser launches in Mac.
The project should work in Windows without being modified beforehand, fix any issues here before setting it up on Parallels
I've used port 57877 however this is what the local project was using at the time. You can use whatever port you would like (avoid any protected ports)