Book Image

Windows Presentation Foundation 4.5 Cookbook

By : Pavel Yosifovich
Book Image

Windows Presentation Foundation 4.5 Cookbook

By: Pavel Yosifovich

Overview of this book

Windows Presentation Foundation (WPF) provides developers with a unified programming model for building rich Windows smart client user experiences that incorporate UI, media, and documents.WPF has become the leading technology for developing rich client applications on the Windows platform, packed with features and capabilities. However, WPF is big; in fact, it's huge, causing a steep learning curve for the beginner and even for those already using some WPF features.Windows Presentation Foundation 4.5 Cookbook provides clear recipes for common WPF tasks. It includes detailed explanations and code examples for customizing and enhancing the basic scenarios, while gaining a deep understanding of WPF mechanics and capabilities.WPF is different and requires a different mind-set and approach. This book provides recipes and insights not only in its design but also its practical implementation details.Starting from the foundations of WPF, such as dependency properties and XAML, the book touches on all major WPF aspects, such as controls and layout, resources, and digs deep into its unprecedented data binding capabilities.The book shows data and control templates in action, which allow full customizations of displayed data and controls in a declarative way. Supported by styles and resources makes data binding all the more powerful. The Model View View-Model pattern is presented as an effective way of maximizing decoupling of components, while providing an elegant way of expanding applications while maintaining a tight grip on complexity.The later parts discuss custom elements and controls ñ the ultimate customization mechanism, and looks at multithreading issues, and how .NET 4.5 task parallelism features can enhance application performance.
Table of Contents (18 chapters)
Windows Presentation Foundation 4.5 Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Introduction


The traditional way of connecting a piece of user interface to some logic has been through events. The canonical example is a button – when clicked, some action is undertaken, hopefully accomplishing some goal the user has intended. Although WPF supports this model completely (as other UI frameworks do), it has its drawbacks:

  • The event handler is part of the "code behind" where the UI is declared, typically a window or a user control. This makes it difficult to call from other objects that may want to invoke the same logic.

  • The aforementioned button may disappear and be replaced by (say) a menu item. This would require the event hooking code to potentially change. What if we wanted both a button and a menu item?

  • An action may not be allowed at a certain state – the button (or whatever) needs to be disabled or enabled at the right time. This adds management overhead to the developer – the need to track state and change it for all UI elements that invoke the same functionality.

  • An...