Security - How to add OAuth2 authentication to a WinForms app

UPDATE:
XAF WinForms UI v23.2+ natively supports OAuth2 providers such as Microsoft Entra ID, Google, etc. - Documentation. The custom solution below is no longer required.

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This is another example of how flexible the security module and our framework are. My colleague Michael has recently published an example on how to use the Microsoft, Google, Facebook or any compatible authentication provider within an XAF WinForms app:
https://www.devexpress.com/kb=T567978

This implementation is based on public community resources like StackOverFlow, so research the links in code comments for more details.

If you are looking for an ASP.NET example, do not miss the article we published earlier:
How to: Use Google, Facebook and Microsoft accounts in ASP.NET XAF applications (OAuth2 authentication demo)

Your feedback is needed!
Originally, we were not going to make a WinForms counterpart, because there were only a couple of requests for it + the whole scenario looked rare for desktop apps.
What is your own experience with it? Have you ever had such integration requests from your end-users? What providers do they need to cover most? Please let us know.

How to skip the logon dialog when debugging or testing an XAF app with the security system enabled

Sometimes during active development, you may find yourself in front of the logon form entering user credentials again and again, and it may eventually become boring. This simple to implement tip will not only save you development time, but also irritation. I wanted to highlight this technique for everyone here after assisting my colleague in this SC ticket + because another customer also found this solution helpful. Since, I also remembered that we have been using a similar thing internally for the installation tests of our demos, I think it is definitely time to let the rest of the world know about this as well.

Steps to implement

1. The instructions below imply that you have already created an XAF WinForms or Web app with the Security module, and its SecurityStrategyComplex and AuthenticationStandard components either using the Solution Wizard or manually. You likely also created predefined users and roles in code or using the application UI at runtime. Consult with the XAF online documentation for more details.