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Slide deck from my "Introducing Silverlight 2" talk today at NOVA Code Camp South
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Silverlight: Where We Are Now Uses XAML Runs on Window, Mac and Linux Silverlight Mobile coming later this year Version 1.0 is released 1.1 has been rolled up into version 2
Abundance of breaking changes
Version 2 is currently in BetaRTM later this year
Versions of Silverlight
1.0Uses Javascript for interactivitySupports High Def Streaming
2.0Uses .NET for interactivityHas a scaled down CLR
○ Called AG CLR (AG = Silver)○ Runtime of about 4.5 mb
Supports High Def Streaming
Javascript Gets No Respect
Many enterprise & component developers ignored version 1 in favor of version 2.
Many firms simply did not want to add more Javascript code to their maintenance load.
The Silverlight 1.0 Blues
Silverlight Didn’t Come Out in the 80s
How Did We Get Here?
Evolution of UX –Text Based UI
• User Experience• Usability – Low• Flexibility – Low• Engagement – None• Performance – Excellent
• Development Experience• Reasonable skillset• Clunky editors and debuggers early on• No Choice
• Deployment Experience• Easy
Era: Mainframe to DOS
Evolution of UX – Desktop GUI
• User Experience• Usability – High• Flexibility – High• Engagement – Medium• Performance – Very Good
• Development Experience• Good tools, platforms, languages• Generally needed only two languages: VB/C# and SQL
• Deployment Experience• Very Difficult at first• Easier with .NET
Era: Windows 3.1 to Present
Evolution of UX – Web Based UI
• User Experience• Usability – Medium/Low• Flexibility – Medium• Engagement – High• Performance – Poor-Good
• Development Experience• High Effort, High Cost• Cross Browser Problems• Multiple Languages: VB/C#, JavaScript, xml, xsl, SQL, HTML, CSS• Debugging Difficult
•Deployment Experience• Easy
Era: Internet era to Present
Evolution of UX – RIA
• User Experience• Usability – High• Flexibility – TBD• Engagement – High• Performance – Good to Excellent
• Development Experience• Good tools, platforms, languages• Generally need only: VB/C#, XAML and SQL
•Deployment Experience• Easy, via browser • Silverlight • Click-once for WPF
Era: Flash v1 to Present
The CompetitionRich Internet Applications (RIA) have been
around for a while. For past ten years, Flash has dominated
the marketAdobe Flex is an IDE built on top of Flash
with J2EE & JSP
Sun recently introduced JavaFX
RIA in Depth• RIA brings the best of desktop and
client/server applications to the best of web applicationsDeployment via webEnhanced user experience
• Microsoft RIA (WPF and Silverlight)One skillset, language, and toolset, from the
database to the services and sites, through to the client, in the browser or on the desktop○ soon, add phone and mobile devices to the list
What’s New in Silverlight 2? Controls & Layout
Actual controls you expected to see in 1.0WPF style skinning and styling
Data BindingWPF style data binding
Framework ChangesNo more Javascript!Managed CodeDynamic Language RuntimeIsolated Storage
What’s New in Silverlight 2? (cont’d) Client Networking Stack
WCF basedSocketsCross-Domain Communications
New Packaging & Deployment ModelXAP filesCustomizable splash screens
Deep Zoom / Multi-Scale ImageSea Dragon technology
More!LINQ, Localization, Fonts and much, much more
What’s New in Silverlight 2
Deep Zoom/Multi-Scale Image
Based on Sea Dragon technology
Uses tiled image pyramids Theoretical max of 4 billion
square pixelsIn real terms, a screen 500 miles
wide
Image size overhead is about 40%
Deep Zoom Image Composer handles of all this for you
Deep Zoom Start to Finish
Networking• WCF Based Networking Stack• Cross Domain calls allowed
But the target site has to allow it○ Twitter, oddly enough, lacks the cross domain policy
HTTP/HTTPS• Sockets• Proxy Web Page
Silverlight Client Access Policy
<?xml version="1.0" encoding="utf-8" ?> <access-policy><cross-domain-access>
<policy><allow-from>
<domain uri="*" /> </allow-from>
<grant-to> <resource path="/"
include-subpaths="true" /> </grant-to>
</policy> </cross-domain-access></access-policy>
http://www.franksworld.com/clientaccesspolicy.xml
Flash Cross Domain Policy
<?xml version="1.0"?><!DOCTYPE
cross-domain-policy SYSTEM "http://www.macromedia.com/xml/dtds/cross-
domain-policy.dtd"><cross-domain-policy> <allow-access-from domain="*" /></cross-domain-policy>
http://www.franksworld.com/crossdomain.xml
Reading an RSS Feed
Learning More Official Silverlight Website
http://www.silverlight.net My Blog
http://www.franksworld.com Pete Brown’s Blog
http://community.irritatedvowel.com/blogs/pete_browns_blog/default.aspx
Silverlight Creamhttp://www.silverlightcream.com
MIX 08 Sessionshttp://sessions.visitmix.com
All these links and more will be posted my blog today.
Questions?
Thanks!
