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.
Custom Control Development: Programming the SmartEditor Custom Control
A WPF Custom Control for Zooming and Panning - CodeProject
Routed events from controls inside WPF CustomControls – Alan Beech – Developer
PowerBuilder - Dimitri Joosten using DevComponents and DLH Soft WPF custom controls in PowerBuilder .NET
Easily Add .NET Core 3.1 and .NET 5.0 Custom Controls to Visual Studio Toolbox
WPF Custom Overview Control - SciChart
07 Composing the UI - PrismNew
C# WPF - UI Buttons
WPF UI Controls Library (C# & VB.NET)
WPF - Custom Controls
کنترل های سفارشی در WPF - آموزش WPF - سورس سرا