Sapan Patel.

sapan@ipowersoftwares.com

+91-9712363687

What is MVVM ?

MVVM is a design patterndesign pattern

MVVM stands for Model-View-ViewModel Model-View-ViewModel

The ViewRepresents the user interface that the user will

seeCan be a page, user control or Data Template

Clean code-behindOnly visual logic (all the rest should go in

the ViewModel)Should never contain anything that is to be

testedModel-related

The ModelData model, service reference/proxy classes,

Very often, an extra layer is added on top of the generated proxy classes

Validation logicData accessNo reference to ViewModel

ViewModel

It contains all the data that needs to be displayed and procedures to modify the model at will.

The magic about MVVM is that the ViewModel knows nothing about the View.

State Operations Not dependent on the view

Data ModelData Model

ViewView

XAML

Code-BehindCode-Behind

View ModelView Model

State + State + OperationsOperations

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Data-binding and commands

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MVVM MVC

**11**

11

viewmodel

navigation

resourcesweb

services

hardware

Benefits of MVVM

Loose coupling Testable code Maintainable code

Thank You!