This sample site tries to illustrate how you might want to use the Flickr.Net API Library on a web site.
It uses WebForms, simply because I've tried to keep everything simple. I'm a bit rusty on WebForms (I tend to use MVC these days).
I've had a little fun upgrading it to use Bootstrap, just so it doesn't look absolutely horrible.
The sample includes a class called FlickrManager which is not part of the Flickr.Net library.
It is designed to show you how you might store and retrieve the authentication token.