1. Paul D. Sheriff PSheriff@pdsa.com www.pdsa.com
DEV216
MVVM Made Easy
Paul D. Sheriff

2. Paul.About Paul D. Sheriff (psheriff@pdsa.com) Developer Tools
President of PDSA, Inc.
Author, Speaker, Architect
Custom Software Development, Developer Tools
Software Audits
Developer Tools
Haystack Code Generator
.NET Productivity Framework

3. Agenda What is MVVM? Why use MVVM? Demos
4/24/ :51 AM
Agenda
What is MVVM?
Why use MVVM?
Demos
Starting with little Data Binding
Add More Data Binding
Add a View Model
© 2004 Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

4. What is MVVM? Model-View-ViewModel Model = Data Class
View = User Interface
ViewModel (VM)
UI binds to this class
VM consumes services of Model
VM may expose services/properties of Model

5. What is MVVM? View knows nothing about Model
Model knows nothing about View
Model knows nothing about View Model
View Model knows nothing about View
Communication from View to VM is via data binding
Lists for List Boxes and Grids
IsEnabled properties for Buttons
Data for Text Boxes

6. Why Use MVVM Separate UI / Business / Data Logic
Be able to swap out UI
Leave business rules/data logic in place
ASP.NET to Silverlight
WPF to Windows Phone
etc.
Unit Testing
Write less UI code

7. Demos Data Binding Review Data Binding using Class Searching Sample
ViewModel for Add/Edit/Delete screen

8. Summary MVVM is easy Just need an additional class
Helps to understand the XAML data binding model
Great for testing and re-usability
Don’t worry about being “100% code-behind free”

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15. 4/24/ :51 AM
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.
© 2009 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

16. 4/24/ :51 AM
© 2009 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.