Embed Size (px)
Citation preview
Understanding MVVM Design PatternSilverlight adventures of asp.net developer
Ljubomir Zivanovicsenior software developer, netcetera
Background
Motivation
Huge number of new technologies & tools
[Almost] Daily announcements of new stuff
WPF, WCF, WF, Silverlight, .NET 4.0, LINQ, DLR, TPL
ASP.NET MVC, jQuery, SharePoint, VSTO, Odata, EF
Azure, Surface, XNA, Windows 7, WP7, MEF, F#
Motivation
impressions
WP7 & Silverlight = dream team!
MVVMSilverlight
WP7HTML5
Situation
Q: How to jump to SL/WP7 Bandwagon in a most efficient way?
A: Hands on - Download WP7 SDK and start playing
Getting started
My First WP7 Silverlight project
DEMO
Demo feedback
Similarities with ASP.NET:
Identical code behind architecture
XAML [is similar to] HTML markup
XAML [looks like] C# object initialization notation
Well known environment
Leveraging Lessons Learned
Same architectural patterns apply to this environment as well.
RAD development practices are OK for one-hour projects
For something even slightly complicated we need better
architecture – here comes MVVM…
Meet MVVM
Model View ViewModel
Why use it?
What it solves?
Benefits?
View
View Model
Model
The Star - ViewModel
View ModelCode
Model(Domain, SQL, File,
Memory...)
View(XAML)
User Interface (pages, controls)
Services
Getting started with MVVM
My Second WP7 Silverlight project
DEMO
What’s in it for me?
Maintainability
Testability
Blendability
Separation of concerns
Why is ViewModel pushed
There is a huge shift in paradigm involved:
meet
Developers are not the only ones responsible for their applications!
How is ViewModel supported
Vast amount of available tools & frameworks that support MVVM:
Prism, MVVM Light, Caliburn, …..
They helps a lot and speedup your development process and adding benefits at the same time
Reverse analogy…
IF Silverlight [has similar architecture to] ASP.NET
AND Silverlight [benefits from] MVVM
THEN ASP.NET [can benefit from ?] MVVM
Result: http://aspnetmvvm.codeplex.com/
MVVM on other platforms
Q&A Session
• Complete an evaluation form and enter to win!– Telerik Ultimate
Collections
– Pluralsight yearly subscriptions
– JetBrains Tools
– RedGate .NET Profiler Pro or other tools
– O’Raily books
– Component One Suites
– CodeSmith Tools
– and many more…
06th November, FON University
