Book Image

MCTS: Microsoft Silverlight 4 Development (70-506) Certification Guide

By : Johnny Tordgeman
Book Image

MCTS: Microsoft Silverlight 4 Development (70-506) Certification Guide

By: Johnny Tordgeman

Overview of this book

Microsoft Silverlight is a powerful development platform for creating engaging, interactive applications for many screens across the Web, desktop, and mobile devices. Silverlight is also a great (and growing) Line-Of-Business platform and is increasingly being used to build data-driven business applications. Silverlight is based on familiar .NET languages such as C# which enables existing .NET developers to get started developing rich internet applications almost immediately. "MCTS: Microsoft Silverlight 4 Development (70-506) Certification Guide" will show you how to prepare for and pass the (70-506): TS: Microsoft Silverlight 4 Development exam.Packed with practical examples and Q&As, MCTS: Microsoft Silverlight 4 Development (70-506) Certification Guide starts by showing you how to lay out a user interface, enhance the user interface, implement application logic, work with data and interact with a host platform amongst others.
Table of Contents (15 chapters)
MCTS: Microsoft Silverlight 4 Development (70-506) Certification Guide
About the Author
About the Reviewers

Creating and consuming value converters

A value converter allows you to dynamically convert values during the process of data binding before the bound value is actually used. A value converter at heart, is a custom class that inherits from the IValueConverter interface. This interface contains two methods—Convert and ConvertBack—which we have to implement. Once the value converter is created, we can use it directly in our XAML.

Converters let us define custom logic for the different properties we have in our application. It is not uncommon to see a converter that converts one type of value to a completely different type, for example, a converter that converts a number value to a color value. Another example would be a conversation of text to Boolean values so a checkbox can be checked based on certain words.

Let's go ahead and create our first converter and see with firsthand experience why this feature is so powerful.

Creating your first converter

Open the Chapter5-Converters project from...