Windows Forms Application Get Info From Redirect Webpage

I'm trying to login to the spotify api, and I have the user login using a certian url. Once they login, they are redirected to a url I have control over. I want to be able to get the info the login screen returns in my windows forms app, and I was told to use a URI scheme for my app, and to set the redirect uri to that scheme so that my app could receive the data.

This is where I get confused, how do I setup a URI scheme for my app and get the parameters to come through it.

I am extremely confused, any information will help!