Writing...Data Services

Coding and writing about OData and now Windows Azure Mobile Services...

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  • Blog Post: Problem Calling POST Service Operations Using the WCF Data Services 5.6.0 Client for Windows Store apps

    For quite a while I have been sending POST requests to invoke service operations, as I detailed in an earlier post Calling Service Operations Using POST . Since this post was from the pre-WCF Data Services 5.0 days, I was using HttpWebRequest to send the request as POST support for service operations...
  • Blog Post: Using the OData Async Extension Method for LoadAsync

    I posted a few months back about Phani’s OData async extension methods that convert the begin/end async pattern of the WCF Data Services client library into methods that support the new (and much easier) async/await pattern introduced in .NET Framework 4.5. I also added some critical missing async extension...
  • Blog Post: Time to get the WCF Data Services 5.6.0 RTM Tools

    Folks who have recently tried to download and install the OData Client Tools for Windows Store apps (the one that I have been using in all my apps, samples, and blog posts to date) have been blocked by a certificate issue that prevents the installation of this client and tools .msi. While a temporary...
  • Blog Post: Recent Goings on in OData and WCF Data Services

    Sorry the blog’s been quiet for so long…I’ve been working on some new stuff that’s not strictly OData, but still very cool and I can’t wait to be able to share it with everyone. It has to do with mobile app development…but you will have to wait another month or so for more info about it. While I’ve not...
  • Blog Post: Running WCF Data Services on Windows 8 Consumer Preview: Part 1

    Windows 8 Desktop I have a Samsung Slate 7, which is the device that was given to the //Build/ conference attendees to run the developer preview of Windows 8 to best demonstrate the new Metro interface. However, I ended up waiting for the Consumer Preview release to really get going on Win8. To that...
  • Blog Post: Blast from the Past: Great Post on Using the Object Cache on the Client

    In the course of trying to answer a customer question on how to leverage the WCF Data Services client for caching, I came across a great blog post on the subject—which I had almost completely forgotten about: Working with Local Entities in Astoria Client (This post—by OData developer Peter Qian —is,...
  • Blog Post: More on the New OData T4 Template: Service Operations

    I’ve long missed support for calling service operations by using the proxy client code-generated by WCF Data Services, and I’ve described some workarounds in the post Calling Service Operations from the WCF Data Services Client . This is why I was excited to discover that the new T4 template...
  • Blog Post: New Windows Azure Guidance Topics Published

    Just a quick post to let everyone know that we have just published a new set of Windows Azure prescriptive guidance topics for developers: Windows Azure Developer Guidance This release includes two guidance topics I wrote: Guidance for OData in Windows Azure Using Windows Phone with Windows Azure These...
  • Blog Post: Calling Service Operations Using POST

    As you may know, OData enables you to define service operations that can be invoked by using either GET or POST requests. The topic Service Operations (WCF Data Services) shows how to define both kinds of service operations using WCF Data Services. Consider the following POST service operation that returns...
  • Blog Post: MSDN Data Services Developer Center Redesign—Lots of Videos

    The WCF Data Service developer center has been redesigned; the purpose of this update is to provide a much more hands-on experience and to make it easier to get started with OData services, and with WCF Data Services in particular. This means, in part, less random content and more videos. Now, the scenario...
  • Blog Post: Getting Entity Data into Your Web Application

    A friend said to me the other day “so, now that I have all of my data modeled as entity data using the Entity Framework, how do I get it into my web application?” While I will admit to not being an ASP.NET expert (despite having written some of the EntityDataSource web service control documentation)...
  • Blog Post: Counting Entities in an OData Service

    We love counting things, a census, and statistics are very popular. Of course, entities in a data service that support the Open Data Protocol (OData) are no different. For example, having a count of the total numbers of entities that you are returning to customers is useful when calculating the total...
  • Blog Post: Calling Service Operations from the WCF Data Services Client

    There seems to be a bit of confusion around the support for and usage of OData service operations in the WCF Data Services client library . Service operations are exposed in the data service metadata returned by an OData service. (If you have no idea what I am talking about, read the topic Service Operations...
  • Blog Post: Binding Media Resource Streams to XAML Controls

    I came across an interesting problem as I was working on the Windows Phone 7 client code for my next installment of the WCF Data Services blog post series on streaming . In this series, I have been using a property on my PhotoInfo entity named StreamUri to hold the URI of the image used for binding in...
  • Blog Post: When Should I Version My OData Service?

    While researching an answer a forum post on versioning, I was digging into one of the v1 product specs and found a couple of very useful logical flowcharts that describe how to handle data service versioning scenarios. Sadly, this information has yet to make it into the documentation. I will do my best...
  • Blog Post: March 2011 CTP of WCF Data Services for OData v3 is Live

    There is a new CTP out for WCF Data Services (v3), which features the long awaited support for properties on derived types (yay!) You can get it from here . The following proposed OData version 3.0 functionality is also supported by WCF Data Services in this release: Multi-Valued Data Types...
  • Blog Post: MERGE Requests and the WCF Data Services Client

    I came across this interesting blog post by Alex van Beek the other day where he demonstrates how to reduce the size of the payload of MERGE requests to an OData service when using the WCF Data Services client. The OData protocol defines a HTTP MERGE action that enables a client to request updates to...
  • Blog Post: Trying to Avoid Buffering the Entire BLOB in a WCF Data Service Client? Well You Can’t

    I wrote a series of blog posts on the WCF Data Services team blog that walks you through the (fairly complicated) process of accessing BLOB data (such as media files, documents, anything too big to return in the feed) from an OData service as a stream. My second post in this series showed how to use...
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