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Mastering LOB Development for Silverlight 5: A Case Study in Action

You're reading from   Mastering LOB Development for Silverlight 5: A Case Study in Action Develop a full LOB Silverlight 5 application from scratch with the help of expert advice and an accompanying case study with this book and ebook

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Product type Paperback
Published in Feb 2012
Publisher Packt
ISBN-13 9781849683548
Length 430 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (19) Chapters Close

Mastering LOB Development for Silverlight 5: A Case Study in Action
Credits
Foreword
About the Authors
About the Reviewers
www.PacktPub.com
Preface
1. Express Introduction to Silverlight FREE CHAPTER 2. Forms and Browsing 3. Data Binding 4. Architecture 5. RIA Services Data Access 6. Out of Browser (OOB) Applications 7. Testing your LOB Application 8. Error Control 9. Integration with other Web Applications 10. Consuming Web Services 11. Security Index

MVVM pattern


Model View ViewModel (MVVM) is an architectural pattern inspired by the Presentation Model design pattern designed by Martin Fowler (one of the greatest experts in the agile software development and object-oriented programming). It is the de facto standard for Silverlight and WPF. So why choose this pattern and not a different one? The answer is because it naturally adapts to the data binding mechanism of Silverlight, allowing us to explore all its capacities.

Let us begin by dissecting the pattern, where we can find the following layers:

  • Presentation: It defines the UI layout. The Code-Behind of every page only needs to contain code in charge of managing certain aspects of the UI.

  • ViewModel: It stores the state of the application and defines operations and notifications to the Presentation layer.

  • Data Model: It interacts with services and defines business rules.

How do these layers interact with each other? Let's take a look at the following figure:

Let's take a look at how...

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