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May 2012 Release

Rating:        Based on 13 ratings
Reviewed:  12 reviews
Downloads: 100385
Change Set: 2c482e5ad6c4
Released: May 1, 2012
Updated: May 8, 2012 by Superexpert
Dev status: Stable Help Icon

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Release Notes

AJAX Control Toolkit Release Notes - May 2012 Release

Version 60501

May 2012 release of the AJAX Control Toolkit.
  • AJAX Control Toolkit .NET 4 - Binary – AJAX Control Toolkit for .NET 4 and sample site (Recommended).
  • AJAX Control Toolkit .NET 3.5 - Binary – AJAX Control Toolkit for .NET 3.5 and sample site (Recommended).

- The current version of the AJAX Control Toolkit is not compatible with ASP.NET 2.0. The latest version that is compatible with ASP.NET 2.0 can be found here: 20229.
- Pages using controls from AJAX Control Tookit .NET 3.5 must use the ToolkitScriptManager, rather than the ASP.NET ScriptManager.
- AJAX Control Tookit .NET 4 cannot be loaded in Visual Studio 2008. It requires Visual Studio 2010.
- When using the Ajax Control Toolkit with Visual Studio 2008, you must have Visual Studio Service Pack 1 installed.
- Instructions for contributing a bug report can be found at

Getting Started

Learn how to install the toolkit and add the toolkit to the Visual Studio/Visual Web Developer toolbox with the following videos and tutorials.

What's New?

  • Ajax File Upload Control - This release includes an all new file upload control which supports displaying file upload progress, multiple file uploads, and drag-and-drop upload.
  • HtmlEditorExtender Image Upload - The HtmlEditorExtender now supports uploading images.
  • HtmlEditorExtender Source View - The HtmlEditorExtender now supports a Source and Design view tab.
  • Bug Fixes - Fixes to the highest voted bugs for the HtmlEditorExtender control.
  • Latest AntiXSS Library - The Ajax Control Toolkit has been updated to use the latest version of the Microsoft Anti-Cross Site Scripting Library (version 4.2).

This release of the Ajax Control Toolkit was brought to you by Superexpert Consulting -- we build ASP.NET websites

Reviews for this release

are there any source for v4.5 ? the source which exist is for v4, how can i have the v4.5 source? Thank you.
by christkhoda on Nov 27, 2012 at 12:32 AM
Tabcontainer is not display while debugging in Toolkit .Net 3.5, Please resolve this issue.
by adageamar on Sep 29, 2012 at 7:46 AM
There are serious bugs in ModalPopupExtender control reported at (toolkit 3.5) But overall its a good effort.
by GauranG on Jun 21, 2012 at 11:06 AM
Using CalendarExtender with this release is far more easier now
by jainamit on Jun 11, 2012 at 1:08 PM
HTMLEditorExtender has several bugs & different behavior in different browsers. It change Link path.....
by yiota_ch on Jun 5, 2012 at 7:24 AM
"The easiest way to install the Ajax Control Toolkit into a Visual Studio 2010 project is via NuGet." Yeah, not if you actually want anything to WORK.... However, if you enjoy using your cranial resources for troubleshooting and critical thinking, then installing this package via NuGet is for you!
by el_shekador on May 17, 2012 at 6:38 PM
Really great work by the team. Awesome effort. New AsyncFileUpload is really cool. But I am not able to see the uploaded image in front end. HTMLEditorExtender is very good & easy to set different options like bold, italic etc. But it has several bugs & different behavior in different browsers. It generates different tags in different browsers. (e.g. for bold, IE create <strong> while mozila <b>)
by anujrathi on May 16, 2012 at 5:42 PM
The new HtmlEditorExtender with image support is awesome, well done to the team! However, the insert image feature does not work if your page uses query strings. The file fails to upload and you just get the word "error" in red next to the file name. Would be great if this could be sorted as my CMS (and probably the CMS of loads of other developers) uses query strings
by MJ2011 on May 16, 2012 at 12:54 PM
Firstly let me appreciate the good work by the team. I just replaced the previous release with this one and I was greeted with the following error: Microsoft JScript runtime error: Sys.InvalidOperationException: Handler was not added through the Sys.UI.DomEvent.addHandler method. This happens when I am using ModalPopExtender on a page that uses UpdatePanel. This was not present with prev version.
by pnitin on May 15, 2012 at 11:52 AM
A couple issues but the htmleditorextender is awesome!
by travissmithv1 on May 14, 2012 at 4:03 AM
Cannot make use of HTMLEditorExtender due to Issue #27153. BallonPopupExtender appears to also be built incorrectly and so far unusable.
by Atters on May 13, 2012 at 1:18 AM
the new Upload control: i don't see a way to save to stream (so i could store file to database)... sure, it's possible to save to file first and read from it afterwards but it will complicate logic
by TTX on May 4, 2012 at 6:34 AM