Book Image

Mastering Windows Presentation Foundation - Second Edition

By : Sheridan Yuen
Book Image

Mastering Windows Presentation Foundation - Second Edition

By: Sheridan Yuen

Overview of this book

Microsoft Windows Presentation Foundation (WPF) provides a rich set of libraries and APIs for developers to create engaging user experiences. This book features a wide range of examples, from simple to complex, to demonstrate how to develop enterprise-grade applications with WPF. This updated second edition of Mastering Windows Presentation Foundation starts by introducing the benefits of using the Model-View-View Model (MVVM) software architectural pattern with WPF, then moves on, to explain how best to debug our WPF applications. It explores application architecture, and we learn how to build the foundation layer of our applications. It then demonstrates data binding in detail, and examines the various built-in WPF controls and a variety of ways in which we can customize them to suit our requirements. We then investigate how to create custom controls, for when the built-in functionality in WPF cannot be adapted for our needs. The latter half of the book deals with polishing our applications, using practical animations, stunning visuals and responsive data validation. It then moves on, to look at improving application performance, and ends with tutorials on several methods of deploying our applications.
Table of Contents (15 chapters)
Implementing Responsive Data Validation

Data validation goes hand in hand with data input forms and is essential to promote clean, usable data. While the UI controls in WPF can automatically validate that entered values match the type of their data bound properties, they cannot validate for the correctness of the entered data.

For example, a TextBox control that is data bound to an integer may highlight an error if a user entered a non-numeric value, but it wouldn't validate that the entered number contained the correct number of digits, or that the first four digits were appropriate for the type of credit card specified.

In order to validate these types of data correctness when using MVVM, we'll need to implement one of the .NET validation interfaces. In this chapter, we'll thoroughly examine the available interfaces, looking at a number of implementations and...