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Practical MVVM
Joel Cochran
About Me
Expression Blend MVP
INETA Community ChampionMCTS (WinForms & WPF)http://www.developingfor.netmailto:[email protected]: @joelcochran
http://speakerwiki.org/speakers/joel_cochran
Announcing Blend SIG
Virtual User Group
http://blendsig.groups.live.comtwitter: @blendsig
2nd Wednesday of each month, 2pm ESTVideos: http://vimeo.com/blendisg
Coming soon: http://blendsig.com
Presenters are deep Blend Experts
My Book!
MEAP available now
http://manning.com/cochran
Published Fall 2011
A developer’s guide
MVVM: Practical Magic?Model, View, ViewModelSimilar to other MVx patternsBig exception: 2 way
communications between View and ViewModel
Allows true separation of concerns
Supports DataBindingNo Code Behind
MVVM Parts: Model
The Data
Data Services
XML Files
ADO.NET, LinqToSQL, EF
Consumed by ViewModel(s)
Unaware of View and ViewModel
MVVM Parts: View
The Screen
UI and UX
Visual Representation of the DataWPF, Silverlight, WP7
Populated by ViewModel(s)
Unaware of the Model
Technically unaware of the ViewModel
MVVM Parts: ViewModel
The Master & The MiddlemanCommunications
Management
Data formatting
Action items
Unaware of View
Model
Data Binding .
MVVM Parts: ViewModel
Data Source
Model Entities
ViewModel
Code Behind
View
ViewModel
Code Behind
View
ViewModel
Code Behind
View
Data Access Service
Model
ViewModel
View
The Practical MVVM Manifesto
Must be simple and discoverableMust support Blend
Must provide design time dataMust be testable
