ITfoxtec SAML 2.0 and .NET ASPX application (not MVC)
The SAML 2.0 component is divided into the base library ITfoxtec.Identity.Saml2 and extension libraries ITfoxtec.Identity.Saml2.Mvc and ITfoxtec.Identity.Saml2.MvcCore for MVC and MVC core respectively.
The base library ITfoxtec.Identity.Saml2 do support .NET Framework 4.7.2. But I'm afraid there is currently no direct support for Win Forms in an extension library.
It is possible to implement the missing parts to support Win Forms, maybe by use of .ascx pages. If you choose to implement an extension which support Win Forms then please do share your code.