ControlzEx: Enhancing WPF UIs with Modern Shared Controls In the evolving landscape of Windows Presentation Foundation (WPF) development, creating modern, visually appealing applications requires more than just standard controls. ControlzEx is a popular open-source library that provides specialized shared controls and behaviors to empower developers to build better WPF user interfaces with minimal effort. As of 2026, it remains a critical dependency for modern WPF applications, often working in tandem with libraries like MahApps.Metro to provide advanced styling and window management. What is ControlzEx?
ControlzEx is a .NET library designed to bridge the gap between standard WPF capabilities and modern Windows design aesthetics. It provides a set of custom controls, behaviors, and helpers, particularly focusing on:
WindowChrome: Advanced customization of window frames (non-client area).
Modernizing Controls: Enhancing standard WPF controls with better default styling and behavior.
Popups and Behaviors: Specialized popups and behaviors for improved user interaction. Key Features and Components
As of the ControlzEx 7.x releases, the library offers robust functionality:
WindowChromeWindow & WindowChromeBehavior: These are core to ControlzEx, enabling developers to easily customize window borders, title bars, and native caption buttons, allowing for seamless integration of dark mode, Mica, or Acrylic effects.
WindowBackdropManager: Added to support modern Windows backdrop effects within application windows, elevating the look and feel to match modern Windows 11+ design languages.
AppModeHelper: Provides mechanisms for managing dark/light system menus, helping applications follow the system theme seamlessly.
Improved NC Hit Testing: Enhances handling of non-client area interaction (like resizing or clicking buttons in the title bar), particularly when windows are maximized.
PopupBackdropManager: Extends backdrop effect support to popups. Why Use ControlzEx?
Shared Foundation: It is designed as a shared library, often used by other major WPF UI frameworks like Fluent.Ribbon to provide common functionality.
Modern Look and Feel: It makes it straightforward to adopt modern Windows ⁄11 design elements.
Active Development: It is actively maintained to support newer .NET versions and Windows API changes.
Open Source & Free: Being open-source, it is freely available for developers to use and contribute to. Getting Started ControlzEx can be easily added to your project via NuGet: powershell Install-Package ControlzEx Use code with caution.
Once installed, you can leverage the WindowChromeWindow to gain advanced control over your application’s appearance:
For more in-depth examples, you can check out the official GitHub repository or look at how it is implemented in MahApps.Metro.
If you are building a modern WPF application in 2026, ControlzEx is an essential tool for achieving a polished, native look.
If you’d like, I can provide a detailed comparison of ControlzEx vs. MahApps.Metro, show you how to implement specific backdrop effects, or walk you through setting up the WindowChromeBehavior in your project. Let me know what you’d like to explore next! ControlzEx 7.0.4 – NuGet
A framework that allows developers to cobble together a better UI for their own WPF applications with minimal effort. ControlzEx 7.0.4 – NuGet