Book Image

Mastering Windows Presentation Foundation

By : Sheridan Yuen
Book Image

Mastering Windows Presentation Foundation

By: Sheridan Yuen

Overview of this book

Windows Presentation Foundation is rich in possibilities when it comes to delivering an excellent user experience. This book will show you how to build professional-grade applications that look great and work smoothly. We start by providing you with a foundation of knowledge to improve your workflow – this includes teaching you how to build the base layer of the application, which will support all that comes after it. We’ll also cover the useful details of data binding. Next, we cover the user interface and show you how to get the most out of the built-in and custom WPF controls. The final section of the book demonstrates ways to polish your applications, from adding practical animations and data validation to improving application performance. The book ends with a tutorial on how to deploy your applications and outlines potential ways to apply your new-found knowledge so you can put it to use right away.
Table of Contents (19 chapters)
Mastering Windows Presentation Foundation
About the Author
About the Reviewer
Customer Feedback

Varying levels of validation

One thing that is not addressed by either of the .NET validation interfaces is the ability to either turn validation on or off, or to set varying levels of validation. This can be useful in several different scenarios, such as having different Views to edit different properties of a data model object.

An example of this might be having a View that enables users to update the security settings of a User object, where we want to validate that each property has a value, but only for the properties that are currently displayed in the View. After all, there is no point in informing the user that a certain field must be entered if they can't do that in their current View.

The solution is to define a number of levels of validation, in addition to the levels that represent full and no validation. Let's take a look at a simple ValidationLevel enumeration that could fulfil this requirement.

namespace CompanyName.ApplicationName.DataModels.Enums 
  public enum...