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Announcing WCF Data Services June 2011 CTP for .NET4 & SL4

June 30th, 2011
Today we are releasing June CTP of the next version of the WCF Data Services libraries targeting.NET 4 and Silverlight 4.  Based on broad community feedback, in addition to features shipped as part of Oct 2010 CTP1, I’m happy to announce that this release includes two of the top three requested features by WCF Data Services developers; ...

datajs V1 Now Available

June 29th, 2011
Over the last few months, we have been hard at work on the datajs library, releasing four preview versions and working with web developers to fine-tune the library. Today, we’re proud to announce that the first version of datajs is now available for download. What does it do? datajs is a JavaScript library for web applications that ...

Announcing datajs version 0.0.4

June 20th, 2011
  We are excited to announce that datajs version 0.0.4 is now available at https://datajs.codeplex.com/. The latest release adds support for Reactive Extensions for Javascript (RxJs), forward and backwards cache filtering, extended metadata, simplified OData call configuration, and provides various performance and quality improvements...

Any/All support in WCF Data Services

May 31st, 2011
The latest CTP of WCF Data Services adds one of the most frequently requested features, namely support for Any/All queries. Prior to this CTP there was no way to filter results based on properties of a related collection (or a multi-value property). For example if you have this model: (image) You couldn’t ask for all movies starring ...

Accessing an OData Media Resource Stream from a Windows Phone 7 Application (Streaming Provider Series-Part 3)

May 17th, 2011
In this third post in the series on implementing a streaming data provider, we show how to use the OData client library for Windows Phone 7 to asynchronously access binary data exposed by an Open Data Protocol (OData) feed. We also show how to asynchronously upload binary data to the data service. This Windows Phone sample is the asynchronous ...

Using Microsoft WCF Data Services Reference Data Caching Extensions (CTP)

April 20th, 2011
Introduction Last week at MIX we announced proposed extensions to the OData protocol for obtaining changes (deltas) to the results of an OData Request. The extensions provide a hypermedia-driven model for obtaining a "Delta Link" from a delta-enabled feed that can later be used to obtain changes from the original results. Along ...

Reference Data Caching Walkthrough

April 13th, 2011
This walkthrough shows how a simple web application can be built using the reference data caching features in the “Microsoft WCF Data Services For .NET March 2011 Community Technical Preview with Reference Data Caching Extensions” aka “Reference Data Caching CTP”. The walkthrough isn’t intended for production use ...

Announcing datajs version 0.0.3

April 13th, 2011
Today we are very excited to announce a new release of datajs. The latest release of datajs makes use of HTML5 storage capabilities to provide a caching component that makes your web application more interactive by reducing the impact of network latency. The library also comes with a pre-fetcher component that sits on top of the cache. The pre...

Announcing WCF Data Services March 2011 CTP2 for .NET4 & SL4

March 9th, 2011
  Today we are releasing CTP2 of the next version of the WCF Data Services libraries.  This release targets .NET 4 and Silverlight 4 and includes new client and server features in addition to those that shipped as part Oct 2010 CTP1.   Below is a brief summary of the features available in this CTP.  Subsequent ...

Introduction to Derived Properties

March 9th, 2011
What is a derived property? A derived property is a property that does not exist on the EntityType associated with the EntitySet; rather it exists on a type that derives from the base type of the entity set. This feature has been among our customers top asks since the lack of support makes exposing models with rich, well-defined inheritance...