Silverlight is Microsoft's technology for building rich Internet applications that run in a web browser. Version 2.0 has been released and is currently in beta, with the final release expected later this year. Silverlight 2.0 uses .NET for interactivity and includes new features like controls, data binding, networking capabilities and Deep Zoom for high resolution images.

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

2. 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

3. 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

4. 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

5. Silverlight Didn’t Come Out in the 80s

6. How Did We Get Here?

7. 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

8. 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

9. 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

10. 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

11. 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

12. 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

13. 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

14. 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

15. What’s New in Silverlight 2

16. 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

17. Deep Zoom Start to Finish

18. 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

19. Silverlight Client Access Policy <?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot; ?> <access-policy> <cross-domain-access> <policy> <allow-from> <domain uri=&quot; * &quot; /> </allow-from> <grant-to> <resource path=&quot; / &quot; include-subpaths=&quot; true &quot; /> </grant-to> </policy> </cross-domain-access> </access-policy> http://www.franksworld.com/clientaccesspolicy.xml

20. Flash Cross Domain Policy <?xml version=&quot;1.0&quot;?> <!DOCTYPE cross-domain-policy SYSTEM &quot;http://www.macromedia.com/xml/dtds/cross- domain-policy.dtd&quot;> <cross-domain-policy> <allow-access-from domain=&quot;*&quot; /> </cross-domain-policy> http://www.franksworld.com/crossdomain.xml

21. Reading an RSS Feed

22. 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.

23. Questions?

24. Thanks!