1. Accessing Web Services in Silverlight 4
Yavor Georgiev
Program Manager
Silverlight

2. How do I access external data from Silverlight?
If someone else owns the data
How do I design my client to work with what’s there?
If I own the data
How do I design my service and client to get optimal richness and ease of development?

3. Someone else owns the data
Limited choices
cross-domain  Yes/No
transport  HTTP
format  XML, JSON, RSS, SOAP
message pattern  request/reply
interaction model

4. Someone else owns the data
Cross-domain
If service exposes policy, you’re OK
If service doesn’t expose policy, consider OOB elevated app
Format
JSON, XML, RSS: REST/HTTP service like Facebook, Twitter
SOAP: SOAP service like Bing or existing enterprise service
WebClient/HttpWebRequest
LINQ to JSON, DCJS
LINQ to XML, XmlSerializer
SyndicationFeed

5. Demo
Local search app using REST and SOAP services

6. I own the data Lots of choices cross-domain transport  HTTP/TCP
format  SOAP
message pattern  request/reply or duplex
interaction model  WCF or WCF RIA

7. I own the data Interaction model Forms over data Operation-centric
transport: HTTP
message pattern: request/reply
Operation-centric
transport: HTTP or TCP
message pattern: request/reply or duplex
WCF RIA Services
 CL09: Developing with WCF RIA Services Quickly and Effectively
WCF Service
HTTP-based request/reply binding
PollingDuplex for HTTP-based duplex
NetTcp for TCP-based duplex
Silverlight app

8. Demo
Video chat operation-centric app using a duplex message pattern

9. Takeaways How do I access external data from Silverlight?
If someone else owns the data
REST and SOAP are both supported
If I own the data
WCF RIA Services for “forms over data” apps
WCF for “operation-centric” apps

10. Other Sessions
CL07: Silverlight 4 Overview - What’s in Store for Silverlight 4?
CL09: Developing with WCF RIA Services Quickly and Effectively
CL05: Search Engine Optimization for Microsoft Silverlight
FT50: Advanced Web Debugging with Fiddler

11. Call to Action Please submit an evaluation
To participate in Silverlight research
Download the bits:
Send feedback and report bugs via our blog:

12. 4/27/2019 1:18 AM
© 2009 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

13. 4/27/2019 1:18 AM
© 2010 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.
© 2009 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.