Use what works (try all the choices)
(I know, it's not really that simple - but I also understand that it can get frustrating when things don't work as you expect. Take your time, find out what does NOT work, and finally, you will hit on the right setup.)
If you can see the printer - and it is listed on your Mac printer pref pane (however, your screenshot does NOT show that the printer is visible on your Mac), but you can't add the printer - it's quite possible that the Canon printer software on your Mac does not support a shared connection to your Canon MP280. That would be a software problem, and it's a Canon problem - not a problem with your Mac.
This Apple support article has all the info that you should need to connect to a network/shared printer.
On your Mac, you can print to a printer connected to a Windows computer.
support.apple.com
Also, keep in mind that your printer is NOT a network printer - it is "shared" on the network. Not all printers can do that.
There's also the possibility of adding a print server to your network, and using THAT to share the printer on your network. You would connect your printer to that print server, not your PC. It's another choice to get you all connected and printing.
Another choice would be to move on to another printer that actually supports a direct network connection. Many printers have built-in Wifi, which would end up making this process super easy.