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Mehul Harry is the DevExpress Web Program Manager. Follow him on twitter: @Mehulharry

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March 2014 - Posts

  • Tech•Days Netherlands 2014: Attend, Save, and Meet DevExpress

    On April 16th & 17th, 2014, I'll be in Den Haag, Netherlands for the Microsoft Tech•Days:

    Microsoft Tech•Days 2014 Netherlands

    Save 50 Euros

    DevExpress is proud to be a sponsor for Microsoft's Tech•Days 2014. And because we have a great relationship with the show's organizers, they've given us some discount codes.

    Email John (JohnM@devexpress.com) and you'll get a special code that will save you 50 Euros when you register for the conference.

    Write Once, Deploy to Multiple Mobile Platforms

    Come see my talk on Thursday, April 17th, 2014. I'll show the latest and greatest from DevExtreme.

    And I would love to meet you and talk about what's happening on the web platform.


    17 April 2014 - 10:50 - 12:05

    Write Once, Deploy to Multiple Mobile Platforms


    See you there!

    Your Next Great .NET App Starts Here

    Year after year, .NET developers such as yourself consistently vote DevExpress products #1.

    Experience the DevExpress difference for yourself and download a free 30-day trial of all our products today: DevExpress.com/trial (free support is included during your evaluation).
  • What's New in 13.2.8 for the ASP.NET Ribbon and HTML Editor

    Check this out, you can now use the DevExpress ASP.NET Ribbon control with the DevExpress ASP.NET Html Editor:

    DevExpress ASP.NET HTML Editor With Ribbon

    The Ribbon Control

    The DevExpress ASP.NET Ribbon control was introduced just a few months ago in the v2013.2 release:

    ASP.NET WebForms and MVC: Ribbon Control (What's new in 13.2)

    After the release we asked ourselves the natural question, "Why not integrate the excellent Ribbon control with the ASP.NET Html Editor?" And the result of the integration means that you can now offer your end-users another slick way to interact with the Html Editor.

    Better with Metropolis

    In the animated GIF above, I'm using the new Metropolis theme. We've created special new icons in the 13.2 release for the Metropolis and Moderno themes. And these new themes are my favorite:

    Download v13.2.8 Release

    The ASP.NET Ribbon control's integration with the Html Editor is in version 13.2.8.

    Download the v13.2.8 (or newer) release now.

    When only the best will do.

    From interactive Desktop applications, to immersive Web and Mobile solutions, development tools built to meet your needs today and ensure your continued success tomorrow.

    Get full access to a complete suite of professional components that let you instantly drop in new features, designer styles and fast performance for your applications.

    Download a free and fully-functional version now: http://www.devexpress.com/Downloads/NET/

  • What's New in 13.2.8 for the ASP.NET Ribbon Control

    Check out these 3 new features of the The DevExpress ASP.NET Ribbon control:

    1. ASPxRibbon - Populate a ComboBox when binding the control to a data source
    2. ASPxRibbon - Extend Ribbon data-related properties that support automatic data binding
    3. ASPxRibbon - Add the Visible property to elements (Tab, Group, Item)

    DevExpress ASP.NET Ribbon Control

    Minor Release - v13.2.8

    The 3 features are included as part of the DevExpress v13.2.8 release.

    Download the v13.2.8 (or newer) release now.

    Ribbon & HTML Editor

    With this v2013.2.8 release, you can also use the DevExpress ASP.NET Ribbon Control with the DevExpress ASP.NET HTML Editor control:

    Use the Ribbon control with DevExpress ASP.NET HTML Editor - v13.2.8

    When only the best will do.

    From interactive Desktop applications, to immersive Web and Mobile solutions, development tools built to meet your needs today and ensure your continued success tomorrow.

    Get full access to a complete suite of professional components that let you instantly drop in new features, designer styles and fast performance for your applications.

    Download a free and fully-functional version now: http://www.devexpress.com/Downloads/NET/

  • Three simple ways to handle DevExpress ASP.NET Callback Errors

    Handle Callback Errors DevExpress ASP.NET

    Here's three simple ways to handle DevExpress ASP.NET Callback Errors:

    1. Do nothing.
    2. ....
    3. PROFIT!

    Do Nothing?

    Yes. For the last couple of years, DevExpress ASP.NET products have been using the excellent ASPxHttpHandlerModule to:

    1. Catch callback errors within DevExpress ASP.NET controls
    2. Bubble them up and display them to you

    Callback Errors in 2014

    I'm writing this blog post because of a video that I made on how to handle Ajax Callback Errors. That was six years ago in 2008! In fact, you can still read it here: Ajax Callback Error in ASP.NET – Video on How-To Handle

    It surprises me that developers are still requesting this video. While's the video is still available, it's not needed anymore. Here's why:

    Web.Config

    When you use DevExpress ASP.NET, you'll notice that your web.config file is updated. That's because the versatile DevExpress ASPxHttpHandlerModule not only handles errors but it's also used for many other things like compressing and combining scripts, delivering images, etc.

    DevExpress Help: Web.Config Options Overview

    So, what's a callback error?

    First, let me define a callback:

    On the other hand, a callback is also a special kind of postback, but it is just a quick round-trip to the server to get a small set of data (normally), and thus the page is not refreshed, unlike with the postback...think of it as 'calling the server, and receiving some data back' - Excellent stackoverflow answer from Andreas Grech

    Therefore, a callback performs a partial page update. So when you page, sort, or do some other operation on the DevExpress ASP.NET GridView, a callback occurs on the server and only the grid is redrawn.

    A callback error occurs when there's an error on the server side during the callback. And because the page is only refreshing a portion of itself, you may not always see the error. And this is where the ASPxHttpHandlerModule will catch the error for you and display it as well.

    The more you know...

    Now that you're empowered with this peace of mind, treat yourself to a chocolate cupcake.

    When only the best will do.

    From interactive Desktop applications, to immersive Web and Mobile solutions, development tools built to meet your needs today and ensure your continued success tomorrow.

    Get full access to a complete suite of professional components that let you instantly drop in new features, designer styles and fast performance for your applications.

    Download a free and fully-functional version now: http://www.devexpress.com/Downloads/NET/

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