Getting started with MVVM

Getting started with MVVM
Model-View-ViewModel
Ash Tewari
www.ashtewari.com
@ashtewari

Introductions
Introductions
Announcements
Share contact information
2

Survey
Do you work with WPF or Silverlight ?
How familiar are you with MVVM ?
Heard about it
Read about it
Played around with it
Used it in a production application
3

Stupid Questions Policy
4

Why ?
WPF Features
Data Binding
Data Templates
Resources
Commands
5

Why ?
Decouple View from its State and Behavior – Code is easy to understand, maintain, evolve and troubleshoot
6

Why ?
Testability – Automated Regressions
7

Why ?
Easily skin user interfaces
8

Why ?
Designer/Developer Workflow – Allows Specialists to work on the same project without much friction
9

Sample Application
MSDN Magazine Article :
http://msdn.microsoft.com/en-us/magazine/dd419663.aspx
Sample Application Download:
http://code.msdn.microsoft.com/mag200902MVVM/Release/ProjectReleases.aspx
10

Demo
Structure of demo application
11

M-V-VM
Model
View
ViewModel
12

Demo
Add “Search” feature to the demo application
13

Take Away
Model does not know about View and ViewModel.
14

Take Away
ViewModel is an abstraction of the View. It encapsulates the State as well as the behavior of the View.
15

Take Away
ViewModel does not have a reference to the View.
16

Take Away
ViewModel implements INotifyPropertyChanged.
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Take Away
ViewModel is assigned to the DataContext property of the View.
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Resources
Advanced MVVM Book
http://joshsmithonwpf.wordpress.com/advanced-mvvm/
BubbleBurst Sample Application
http://bubbleburst.codeplex.com/
19

Resources
Comparison of MVVM Frameworks
http://www.japf.fr/2009/11/discover-compare-existing-mvvm-frameworks/
MVVM Light Toolkit
http://www.galasoft.ch/mvvm/getstarted/
20

Feedback Forms
Ash Tewari
www.ashtewari.com
@ashtewari

Getting started with MVVM

by ashtewari on Nov 06, 2010

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Getting started with MVVM — Presentation Transcript