MVVM Beginner

Question

What is MVVM on Windows Store App briefly Explain please (Including RealyCommand )  , I am Beginner

Answer 1

21 minutes, 52 seconds

Practical MVVM For Windows Phone

Also search channel9 form more MVVM Phone topics.

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Jeff Sanders (MSFT)

@jsandersrocks - Windows Store Developer Solutions @WSDevSol
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Answer 2

See Use the Model-View-ViewModel (MVVM) pattern

Answer 3

This is a brief overview:

View

• Describes the user interface using a declarative markup such as XAML.
• Presents information to the user (data-binding).
• Responds to the user input (commands and keyboard shortcuts).
• Composed of the following elements:
  • XAML elements
  • value converters
  • data templates
  • visual state groups
  • storyboards
  • behaviours - pieces of packaged code that is used to add interactivity to the app
  • triggers - DataTriggers have been replaced with Visual State Manager
  • code - additional UI-related logic

ViewModel

• Responsible for interaction between the View and the Model.
• Provides presentation logic for one or multiple Views.
• Has three ways of communicating with the View:
  • data-binding
  • visual states
  • commands and method calls
• Implements the property change notification interface.

Model

• Describes business entities (e.g. Publisher, Book, Order) usually implemented as classes.
• Describes business logic operating on the entities without involving UI (View) and presentation logic (ViewModel).
• Describes relations between the entities.
• Contains state of the entities.
• Accesses entity data from local or remote sources.
• Includes any data caching mechanism if needed.

I also found this link helpful:

Getting Started with MVVM: http://channel9.msdn.com/Shows/Visual-Studio-Toolbox/Getting-Started-with-MVVM

Leszek

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