The following article shows you how you can serialize any Delphi object that you declare.
Binary Serialization with the Microsoft .NET framework and Delphi for .NET
For serializing VCL.NET objects, look for an upcoming article, coming your way soon!
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes