UI Application Logic Out of the box approach View ViewModel Model Model-View-ViewModel (MVVM)

Building an MVVM-Based Architecture That WorksChris [email protected]@ZeroKoll

DEV-B304

Who is that guy?

Welcome to the messed up world that is my head!

Shu Ha Ri”first learn, then detach, and finally transcend”

Architecture is the differentiator

Simplify development or maintenance

UI

Application Logic

Out of the box approach

View

ViewModel

Model

Model-View-ViewModel (MVVM)

View

ViewModel

Services

Model

View

ViewModel

Services

ModelPlatform-specific

functionality

Portable Class LibraryForcing separation / guiding architecture

Portable/Common

Platform specific

View

ViewModel

Services

ModelPlatform-specific

functionality

Service Implementation

Platform specific

Portable/Common

To framework or not to frameworkNuGet, BYO or maybe “plain vanilla”

Dependency Inversion

Options for DISingletonFactoryService LocatorDependency Injection

VM <> V CommunicationCoupling, interfaces or bindings

VM <> VM CommunicationEvents, callbacks or event aggregator

AsynchronocityYes…you have to go there…

Action<T> || async/awaitFlexible and easy to use || Simple, easy and integratedManual threading || SimplicityBackwards compatible || NuGet Microsoft.Bcl.Async

Useful platform abstractionsNavigationService, Dispatcher, Application

Questions?”There is no such thing as a stupid question”

[email protected]@ZeroKollhttp://chris.59north.com/

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