WPF - Custom Controls - WPF applications allows to create custom controls which makes it very easy to create feature-rich and customizable controls. Custom controls are used when all the built-in controls provided by Microsoft are not fulfilling your criteria or you don’t want to pay for third-party controls.
Convert c#.net Winform designer code to WPF Xaml code
A Simple Pattern for Creating Re-useable UserControls in WPF / Silverlight
Buttons, WPF Controls
GitHub - fahadsuhaib/FWpfControls: F# WPF Custom Controls
WPF Archives - Page 6 of 14 - Brian Lagunas
c# - How to create WPF user control: custom TabItem? - Stack Overflow
C# WPF - UI TextBoxes
Creating & using a UserControl - The complete WPF tutorial
WPF: How to create a custom items control panel? - Stack Overflow
WPF Custom Overview Control - SciChart
Reusing UI components in WPF: A case study