Carlos Figueira MSDN blog

In order for a Silverlight (or Flash) app coming from one domain to be able to consume data from services in a different domain, the service must "allow" the app to do so by providing a policy file which grants access (to prevent all sorts of...

The previous post mentioned how to return arbitrary data from WCF services. To receive data, however, there is one extra step, which I'll try to explain here. Like returning arbitrary data, the key for accepting arbitrary (in any format) data is for...

I've seen quite a few times in the forums people asking how to control exactly how the data returned by a WCF service. People want to use a certain format for the output of the data which isn't (natively) supported by WCF, such as XML or JSON. A few examples...

Over the next months I intend on writing a series of posts about the (many) extensibility points from WCF (up to .NET Framework 4.0). The cadence should be around one new post every 1-2 weeks (depending on the workload I have at work). WCF is a very...

On a post a couple of years back, I showed a solution to enable cross-domain calls for Silverlight apps on self-hosted WCF services . In Silverlight 4, we added a new transport (net.tcp), which needs its own policy file as well (see more details at http...

This post was written for the Beta version of the ASP.NET MVC 4. The updates needed to make them run in the latest bits (Release Candidate) are listed in this new post . The code for this post is published in the MSDN Code Gallery . Last post I showed...

This post is part of a series about WCF extensibility points. For a list of all previous posts and planned future ones, go to the index page . The message inspectors are probably the most used extensibility points of the WCF runtime. Anytime you need...

This post is part of a series about WCF extensibility points. For a list of all previous posts and planned future ones, go to the index page . The message inspectors, described in the previous post of this series, allows you complete control over the...

After seeing some questions about this new feature added in Silverlight 4, I decided to post an example to see how it can be used in some real world scenarios. This new mode was added mostly to enable the performance improvements in the Polling Duplex...

In the previous post, which talked about the new Web programming model support for SL4, I mentioned that the support for strongly-typed consumption of REST/JSON services wasn't available out of the box. This post will show how to plug additional code...

This post is part of a series about WCF extensibility points. For a list of all previous posts and planned future ones, go to the index page . Whenever an operation throws an (unhandled) exception, the WCF runtime will catch that exception to prevent...

This post was written for the Beta version of the ASP.NET MVC 4. The updates needed to make them run in the latest bits (Release Candidate) are listed in this new post . The code in this post is published on the MSDN Code Gallery . By default, a web page...

The code for this post can be downloaded from the MSDN Code Gallery . A pair of popular posts which I did a couple months back was to show how one can implement CORS (Cross-Origin Resource Sharing) in the net ASP.NET Web API framework. This week I...

With the introduction of the server-side authentication flow (which I mentioned in my last post ), it’s now a lot simpler to authenticate users with Windows Azure Mobile Services. Once the LoginAsync / login / loginViewControllerWithProvider:completion...

This post is part of a series about WCF extensibility points. For a list of all previous posts and planned future ones, go to the index page . Despite my personal displeasure with configuration , I understand that there are situations where one would...

(A small break from the current WCF extensibility series, as I faced this issue helping a customer this week and I thought it would be worth sharing) In order to support transferring of large messages (e.g., uploading or downloading a large file),...

This post is part of a series about WCF extensibility points. For a list of all previous posts and planned future ones, go to the index page . The first behavior covered in this series is the IServiceBehavior . It can be used to inspect or change the...

This post is part of a series about WCF extensibility points. For a list of all previous posts and planned future ones, go to the index page . Channels are possibly the most fundamental concept in WCF that (almost) nobody knows about. This is quite a...

This post is part of a series about WCF extensibility points. For a list of all previous posts and planned future ones, go to the index page . Last week I introduced the channel model in WCF, with an emphasis on the channels at the client side. But that...

One recurring theme that I see in the forums is when a user has a sample JSON document (something that is returned by a service, for example), and he/she wants to deserialize similar JSON documents. That’s the case for most AJAX services which return...

This post is part of a series about WCF extensibility points. For a list of all previous posts and planned future ones, go to the index page . Message formatters are the component which do the translation between CLR operations and the WCF Message...

When responding to requests using any of the text/XML bindings (BasicHttpBinding / WSHttpBinding / CustomBinding with a TextMessageEncodingBindingElement), WCF has some specific prefixes which it uses corresponding to a certain namespaces. The SOAP namespace...

Since NetFX 3.5, WCF has support for working with JSON data. You can define your data contracts according to the JSON “schema” you expect to receive / want to return, plug them into your operation contracts, and your server is talking JSON...

I’ve seen this question to many times in different forums, and answered in many different ways that I decided to write a post with more details about it. The title says it all, but I want to reiterate the answer that I had to give so many times: Using...

Following up on a comment made in one of my posts, this one will talk about some ways to ensure that the data stored / retrieved in an Azure Mobile Services table is limited to the user which is using the application. That’s an interesting issue...