Ori Calvo

jQuery Deferred object by oric

Suppose you need to fetch some data from your server by executing 3 different $.ajax requests. Each request brings a different part of the total data. You don't mind in which order the requests complete. Only when the 3 requests are completed successfully you can use the data. In addition, in case one of the method fails you need to execute some error handling code. The naive solution looks something like that: function getAllData(success, error, complete) { var count = 0; var errorInvoked =...

ASP.NET MVC 4 Beta - MSDN Session at Microsoft by oric

Today I delivered yet another MSDN session at Microsoft. This time it was about ASP.NET MVC 4 Beta. The biggest news for this version is a new template project named Single Page Application (SPA). Implementing SPA is now possible using several client libraries like Knockout, upshot and History. Those libraries combined with ASP.NET Web API allow us to write desktop/mobile like application using web technologies. All samples and PPTs introduced during the session can be found here I hope you enjoyed...

What’s new in ASP.NET 4.5 – #2 Session at John Bryce by oric

Today I delivered a 3 hour session about ASP.NET 4.5 at John Bryce college. This is the second session about ASP.NET 4.5 and like the first one I displayed the major new features of the Microsoft web platform. Specifically I presented the new ASP.NET Web Forms data binding mechanism, KnockoutJS, Web API, Bundling and Minification, Visual Studio 11 IDE enhancements and ASP.NET MVC 4 new mobile support. All samples which were presented during the session can be found here Hope to see you in the next...

ASP.NET MVC 4 – SPA Video by oric

If you haven’t watch this video yet then go do it now !!! IMHO, one of the most interesting videos lately. Steve Sanderson from MS introduces ASP.NET MVC 4 combined with Upshot, Knockout and History. Using these technologies you can much easier develop a Mobile/Desktop like applications for the web. Knockout allows you to bind the local data to the UI, Upshot manages the interaction with the server and even can save data locally in case server is down and History manages the browser navigation system...

Are you using Cassette? by oric

ASP.NET 4.5 Developer Preview introduces a new capability to manage scripts bundling and minification. You can read about it here . However, the current implementation lacks a very important aspect of scripts management which is managing the dependencies. As you know, when referencing a single script file you also need to reference all its dependencies. Wouldn't it be nice if someone automatically injects the right dependencies? Enter Cassette world ... Cassette is an HttpModule which seats inside...

ASP.NET Web Forms 4.5, MVVM and Testability by oric

ASP.NET Web Forms 4.5 introduces a new data binding mechanism. The formal name of this feature is "Model Binding". I guess the name implies that pages/controls are now bound to a model object and not just plain data. Is there any difference between data and model? I guess that most of us will agree that model has state + behavior while data has only state. Taking that into account it is not surprising that the new data binding mechanism is named "Model Binding" since we can use...

What's new in ASP.NET 4.5 - Session at John Bryce College by oric

Today I delivered a half day session about ASP.NET 4.5. The session was full of interesting subjects like ASP.NET Web Forms new data binding mechanism, automatic bundling and minification, using Web Sockets API, integrating jQuery Mobile into ASP.NET MVC and even writing HTML 5 offline web applications. Beyond specific technologies I tried to give me private feelings regarding the future and which technology I think today engineers should adopt and learn. I would like to thank all for participating...

ASP.NET MVC 4 Developer Preview - MSDN Session by oric

Today I delivered an MSDN Session at Microsoft Ra'anana. This time it was about ASP.NET MVC 4 Developer Preview. It was a great chance to present some of the cool features of this preview like Adaptive Rendering, Display Mode, View Switcher and of course jQuery Mobile. I would like to thank all participants and hope to see you again in future sessions All demos and PPTs can be downloaded from here Full video of the session can be found here

Implement an HTML table using DIVs by oric

This is quite an old topic but still when browsing through some popular forums I still encounter the following question: "How can I implement a table using DIVs and control the width of each column?" Before digging into the implementation I would like to share my thoughts regarding the old TABLE vs. DIV war: In the old days web developers used TABLE tag for displaying a tabular data and for controlling the layout of the page. These days it seems as everyone hates TABLE and tries to use...

Make Authorize Filter Transfer instead of Redirect by oric

Full sample can be found here Authorize filter is great. You can throw it on an action/controller and user access is automatically controlled by the filter itself. However, when using it you probably noticed that when the user does not have sufficient permission (A.K.A not part of the relevant role) he is redirected by the filter to the logon view. I hope you agree with me that a better approach (from user perspective) is to display a message like "You are not authorized to perform this operation"...

Using Razor Outside of the Web by oric

Does the following task sound familiar to you: "Upon work completion the system will send a notification e-mail to relevant recipients" ? Two weeks ago I had a chance to implement this kind of scenario once again. Of course, part of the requirement is to send a very informative E-Mail which means sending not a plain text but rather an HTML. It goes like this: Read the content of an E-Mail template file Modify the template with real time information Send the modified email to clients Bullet...

Exclude A Filter by oric

In my last ASP.NET MVC MSDN session I was asked a simple question: "How can we disable a filter for a specific action, assuming it is already defined at the class level?" Of course, having this ability can really ease the maintenance of our application. Without this ability we need NOT to define the filter at the class level and then define at each action level. Well, I did not have any simple question. However, I claimed that such an infrastructure can be easily developed using the excellent...

ASP.NET MVC 3 MSDN Session by oric

Two days ago I delivered another ASP.NET MVC 3 MSDN session. As usual, we started with the basics to allow engineers not familiar with ASP.NET MVC to understand the major concepts behind it During the second part of the session, I demonstrated several subjects that are considered more advanced such as, Custom Action Result, Custom Model Binder, Custom Metadata Provider and other Custom XXX In addition, I had the chance to introduce some really nice tools such as Knapsack and ASP.NET Mini Profiler...

Source Control with SVN by oric

Since 2005 I've been mostly working with Microsoft Team Foundation Server to manage my source code. Before that I had the chance to work with Microsoft Source Safe and even a bit with WinCVS (for self projects) These days I am back again working on a self project and need to share my source code with two other developers. All roads led me to SVN. I was quite surprised how easily an SVN server can be installed and manipulated from Windows Explorer. So I decided to share this info with you. There...

Implementing Composite Pattern with Entity Framework Code First - Part 2 by oric

In my previous blog post I described the way you can implement Composite pattern using Entity Framework Code First. The sample uses EFCodeFirst CTP 5 which suffers from a minor bug related to the composite relationship. Microsoft just released EF 4.1 RC which fixes the issue. Now, you can implement your composite pattern in a clean fashion. You can find the fixed composite pattern sample here .