What This Session Is And What It Is Not
It is:An investigation of how different software architecture patterns relate to different Microsoft developer technologiesA what to use where discussion
It is not:An exhaustive architectural discussion of software patterns with a bunch of mental pontifications.
Overview
What, why, how of Model-view-controller(C) or presenter(P) or View Model(VM) architecture patternsModel-View-Controller (MVC) pattern
ASP.Net MVC 3 exampleModel-View-Presenter (MVP) pattern
Web Forms/SharePoint exampleModel-View-ViewModel (MVVM) pattern
Silverlight exampleWhat to use where
What is Model/View/(C or VM or P)
Patterns that describe a modular approach to software developmentModules include:
Model – DataView – Presentation LayerC or VM or P – Glue Logic
They are based upon a “Separation of Duties”Seen in many other types o,f system frameworks
How is this different from nTier development in the 90’s - anybody remember Distributed interNet Architecture (DNA)
Why Model-View-(C or VM or P)
The Patterns all have similar goals, however, achieve them in different waysThe Patterns goals are to increase:
ModularityFlexibilityTestabilityMaintainability
Model-View-Controller (MVC)
First described in 1979 for Smalltalk at Xerox PARCController is centerpiece that decouples the Model and ViewControl flow:
User interaction eventController handles event and converts it to a user action the Model can understandModel manages the behavior and data of the application domainThe View interacts with the Controller and Model to generate a user interface
Client/Server (DNA) vs MVC
Controller
ModelView
Client-----------------------
Business Objects
Server-----------------------Business Objects
Data
MVC Observer Pattern
Controller
ModelView
demo
ASP.Net MVC 3
Model-View-Presenter (MVP)
MVP originated in early 1990sMVP is a derivative of MVCTwo types of implementation
Passive ViewSupervising Controller
Presenter assumes the functionality of the MVC ControllerView is responsible for handling UI eventsModel becomes strictly a Domain ModelMore User Interface centric
MVC vs MVP (Passive)
Presenter
ModelView
Controller
ModelView
MVP – Supervising Controller Pattern
Presenter
ModelView
SharePoint 2010 Developer Guidance
MVP Class Diagram and Flow of Execution for the SandBox Execution Model
demo
MVP Using ASP.Net Web Forms
NameTitleGroup
Model-View-ViewModel (MVVM)
Largely based on MVCSpecialization of the MVP pattern known as the Presentation ModelBuilt specifically for the WPF and Silverlight environmentsModel and View works just like MVCViewModel is a “Model of the View”
It extends the Model with Behaviors the View could useData Binding between View and ModelPasses commands between the View and Model
MVP (Passive) vs MVVM
ViewModel
ModelView
Presenter
ModelView
demo
MVVM Using Silverlight
NameTitleGroup
What To Use Where
Model-View-Controller (MVC) patternASP.Net MVC 3 Disconnected Web Based Applications
Model-View-Presenter (MVP) patternWeb Forms/SharePoint, Windows Forms UI state logic already wired up
Model-View-ViewModel (MVVM) patternSilverlight, WPFTwo way data-binding
ARC Track Resources
http://www.microsoft.com/visualstudio http://www.microsoft.com/visualstudio/en-us/lightswitch http://www.microsoft.com/expression/http://blogs.msdn.com/b/somasegar/http://blogs.msdn.com/b/bharry/http://www.microsoft.com/sqlserver/en/us/default.aspxhttp://www.facebook.com/visualstudio
Resources
www.microsoft.com/teched
Sessions On-Demand & Community Microsoft Certification & Training Resources
Resources for IT Professionals Resources for Developers
www.microsoft.com/learning
http://microsoft.com/technet http://microsoft.com/msdn
Learning
http://northamerica.msteched.com
Connect. Share. Discuss.
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