I’m very excited to announce the release of OData T4 for C# Preview 1, for the October 2011 CTP of the next version of WCF Data Services libraries, with support for code generation of service operations. The goal of this T4 preview and subsequent...

This CTP of WCF Data Services adds support for geospatial data. The release allows use of all of the OData geospatial data types and the geo.distance() canonical function. This enables two key scenarios: Read and write geospatial data (all types supported...

“Actions will provide a way to inject behaviors into an otherwise data-centric model without confusing the data aspects of the model, while still staying true to the resource oriented underpinnings of OData." The October 2011 CTP of WCF Data Services...

This blog talks about a new feature delivered in the WCF Data Services October CTP that can be downloaded here . WCF Data Services’ latest CTP includes a new stand-alone library for working directly with OData. The library makes public some underpinnings...

One new feature in WCF Data Services October 2011 CTP   is Vocabularies. You can learn more about vocabularies and how they are supported in OData here . In a nutshell, a vocabulary is a namespace containing terms where each term is a named metadata...

    I’m very excited to announce the release of the October 2011 CTP of the next version of WCF Data Services libraries. This release includes libraries for .NET 4 and Silverlight 4 with new client and server features in addition to those included...

  One of the most frequently requested features for OData is payload compression. We have added two events to DataServiceContext in the OData phone client included in the Windows Phone SDK 7.1 that enables you to work with compressed payloads: WritingRequest...

Microsoft recently released the developer preview of the next version Windows as well as a developer preview of Visual Studio 11 for building apps on the new version of Windows. Some of you may have noticed that the “New Item” template for...

We have just released a new drop of ODataLib and EdmLib on CodePlex as a shared source project. ODataLib is a library used for advanced OData serialization and deserialization scenarios, and EdmLib is a library used to manipulate entity data models. We...

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...

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...

  We are excited to announce that datajs version 0.0.4 is now available at http://datajs.codeplex.com/ . The latest release adds support for Reactive Extensions for Javascript (RxJs), forward and backwards cache filtering, extended metadata, simplified...

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)....

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...

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...

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 “...

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...

  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 .  ...

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...

Today we are announcing a new project called ‘datajs’, a cross-browser JavaScript library that enables web applications to do more with data. datajs leverages modern protocols such as JSON and OData as well as HTML5-enabled browser features...

This post creates a Windows Phone 7 client application for the OAuth 2.0 protected OData service we created in the last post . Prerequisites: To run this code you will need: An AppFabric Access Control Services (ACS) instance & OData Service...

In this post you will learn how to create an OData service that is protected using OAuth 2.0, which is the OData team’s official recommendation in these scenarios: Delegation: In a delegation scenario a third party (generally an application...

A lot of our customers have asked us how to cache results from their Data Service. Which is why I want to point you to this excellent post by Peter Qian (a developer on the Data Services team) that shows you how to setup ASP.NET output caching. It...

Problem Statement: In previous versions, the WCF Data Services .NET and Silverlight client libraries always assumed that all collections (aka entity sets) had the same base URI. This assumption was in place because the library used the URI provided...

1.      Problem: In the previous version, WCF Data Services introduced the feed customization feature. This feature enabled users to map properties to certain elements in the Atom document. As an example, users could map a name property...