Creating Applications Using The Model-View-View Model Pattern
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Need a new acronym for your resume? The Model-View-ViewModel (MVVM) pattern is a variation of Model-View-Presenter (MVP) that is tailored for modern UI development platforms where the View is the responsibility of a designer rather than the developer. This has lead to the pattern becoming very popular with WPF and Silverlight application developers lately. This presentation will walk you through creating a business application from scratch in both WPF and Silverlight using the MVVM pattern.
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Creating Applications Using The Model-View-View Model Pattern
- 1. Creating Applications using the Model-View-ViewModel Pattern Matt Casto mattcasto@gmail.com http://twitter.com/mattcasto
- 2. Developing Software is HARD
- 3. Developing Software is HARD
- 4. Patterns Help … but its still HARD!
- 5. Model – View – ViewModel
- 6. Model – View – Controller
- 7. Model – View – Controller • Regarded as the first pattern to seperate UI, Data & Logic concerns • Controller handles all logic, including Mouse & Keyboard events
- 8. Model – View – Presenter
- 9. Model – View – Presenter • Variation of MVC • Tailored for modern UI that handles Mouse & Keyboard events better • Presenter depends on View
- 11. Presentation Model • Published by Martin Fowler in 2004 • View is a rendering of the Presentation Model
- 12. Presentation Model “Probably the most annoying part of Presentation Model is the synchronization between Presentation Model and view. It’s simple code to write, but I always like to minimize this kind of boring repetitive code. Ideally some kind of framework could handle this, which I’m hoping will happen someday with technologies like .NET’s data binding.” – Martin Fowler
- 13. Model
- 14. Model – Your Data
- 15. Model – Your Data • Entities • Service Proxy • POCO
- 16. Model – Your Data View
- 17. Model – Your Data View – User Interface
- 18. Model – Your Data View – User Interface • XAML (WPF) • XAML w/ Code Behind (Silverlight)
- 19. Model – Your Data View – User Interface ViewModel
- 20. Model – Your Data View – User Interface ViewModel – The View’s Model
- 21. Model – Your Data View – User Interface ViewModel – The View’s Model • State • Operations • Not Dependent on the View
- 22. You’re probably already doing something very close to this
- 23. You probably could be doing something very close to this
- 24. Why do I care about MVVM?
- 25. Why should you care about MVVM?
- 26. Patterns are a set of guidelines Patterns are not a set of rules
- 27. Benefits of MVVM
- 28. Benefits of MVVM • Loose Coupling • Testable Code • Maintainable Code
- 33. DEMO Commands
- 34. Enterprisey Solutions • Component Application Guidance • Caliburn • Roll Your Own
- 35. Sources • WPF Apps With The Model-View-ViewModel Design Pattern – Josh Smith http://msdn.microsoft.com/en-us/magazine/dd419663.aspx • Model-View-ViewModel In Silverlight 2 Apps – Shawn Wildermuth http://msdn.microsoft.com/en-us/magazine/dd458800.aspx • ViewModel Pattern in Silverlight using Behaviors – Nikhil Kothari http://www.nikhilk.net/Silverlight-ViewModel-Pattern.aspx • Using RoutedCommands with a ViewModel in WPF – Josh Smith http://www.codeproject.com/KB/WPF/VMCommanding.aspx • Presentation Model – Martin Fowler http://martinfowler.com/eaaDev/PresentationModel.html
- 37. THANKS!! Matt Casto mattcasto@gmail.com http://twitter.com/mattcasto