Windows Forms
Official docs outline
5 sections- Windows Forms overview
Forms, controls and the WinForms programming model.
- Controls
Standard controls, layout and docking.
- Forms and events
Form lifecycle events, event handlers and message loop.
- High DPI support
DPI awareness modes and scaling.
- Migrate from .NET Framework
Porting WinForms apps to modern .NET.
Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.