Published on August 19, 2009
Creating Applications using the Model-View-ViewModel Pattern
Developing Software is HARD
Developing Software is HARD
Patterns Help … but its still HARD!
Model – View – ViewModel
Model – View – Controller
Model – View – Controller Regarded as the first pattern to seperate UI, Data & Logic concerns Controller handles all logic, including Mouse & Keyboard events
Model – View – Presenter
Model – View – Presenter Variation of MVC Tailored for modern UI that handles Mouse & Keyboard events better Presenter depends on View
Presentation Model Published by Martin Fowler in 2004 View is a rendering of the Presentation Model
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
Model – Your Data
Model – Your Data Entities Service Proxy POCO
Model – Your Data View
Model – Your Data View – User Interface
Model – Your Data View – User Interface XAML (WPF) XAML w/ Code Behind (Silverlight)
Model – Your Data View – User Interface ViewModel
Model – Your Data View – User Interface ViewModel – The View’s Model
Model – Your Data View – User Interface ViewModel – The View’s Model State Operations Not Dependent on the View
You’re probably already doing something very close to this
You probably could be doing something very close to this
Why do I care about MVVM?
Why should you care about MVVM?
Patterns are a set of guidelines Patternsare not a set of rules
Benefits of MVVM
Benefits of MVVM Loose CouplingTestable CodeMaintainable Code
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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 ...
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I'm a C#/Windows Forms programmer with more than 5 years experience. I've been investigating WPF using the MVVM (Model-View-ViewModel) design pattern.