Introducing Silverlight 2

Frank La Vigne Applied Information Sciences Tablet PC MVP www.franksworld.com [email_address]

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 Beta
RTM later this year

Versions of Silverlight
1.0
Uses Javascript for interactivity
Supports High Def Streaming
2.0
Uses .NET for interactivity
Has 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
Good tools, platforms, languages
Generally needed only two languages: VB/C# and SQL
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
High Effort, High Cost
Cross Browser Problems
Multiple Languages: VB/C#, JavaScript, xml, xsl, SQL, HTML, CSS
Debugging Difficult
Easy
Era: Internet era to Present

Evolution of UX – RIA
User Experience
Usability – High
Flexibility – TBD
Engagement – High
Performance – Good to Excellent
Good tools, platforms, languages
Generally need only: VB/C#, XAML and SQL
Easy, via browser
Silverlight
Click-once for WPF
Era: Flash v1 to Present

The Competition
Rich Internet Applications (RIA) have been around for a while.
For past ten years, Flash has dominated the market
Adobe 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 applications
Deployment via web
Enhanced 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 1.0
WPF style skinning and styling
Data Binding
WPF style data binding
Framework Changes
No more Javascript!
Managed Code
Dynamic Language Runtime
Isolated Storage

What’s New in Silverlight 2? (cont’d)
Client Networking Stack
WCF based
Sockets
Cross-Domain Communications
New Packaging & Deployment Model
XAP files
Customizable splash screens
Deep Zoom / Multi-Scale Image
Sea 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 pixels
In 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 Cream http://www.silverlightcream.com
MIX 08 Sessions http://sessions.visitmix.com
All these links and more will be posted my blog today.

Questions?

Thanks!

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Introducing Silverlight 2

by Frank La Vigne on Mar 29, 2008

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Introducing Silverlight 2 — Presentation Transcript