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May 2011 Release

Rating:        Based on 13 ratings
Reviewed:  12 reviews
Downloads: 120145
Change Set: a497357d78ce
Released: May 6, 2011
Updated: May 16, 2011 by Superexpert
Dev status: Stable Help Icon

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application, 5980K, uploaded May 8, 2011 - 77706 downloads

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application, 6082K, uploaded May 8, 2011 - 31660 downloads
Source Code
source code, 23587K, uploaded May 8, 2011 - 10779 downloads

Release Notes

AJAX Control Toolkit Release Notes - May 2011 Release

Version 50508

May 2011 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).
  • AJAX Control Toolkit - Source – AJAX Control Toolkit source code for ASP.NET 3.5/ASP.NET 4.

- 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?

This release of the Ajax Control Toolkit focused on making fixes and improvements to the ModalPopup, AsyncFileUpload, and DropShadow controls:
  • ModalPopup - The ModalPopup extender has been enhanced to support animations. The ModalPopup now supports OnShowing, OnShown, OnHiding, OnHidden animations. For example, you can fade-in the popup when it opens and fade-out the popup when it closes. Or, you can get super fancy with your animations.
  • AsyncFileUpload - This release fixes several significant issues with the AsyncFileUpload. For example, previous to this release, the AsyncFileUpload control did not work correctly in a master page or when ClientIDMode="static". In this release, the AsyncFileUpload has been enhanced to be HTML5 compatible and to work with Mozilla Firefox 4.
  • DropShadow - This release fixes an issue with the DropShadow extender which prevented it from working correctly in an UpdatePanel. This release also includes better test coverage for the DropShadow with the addition of new QUnit tests.

Note: If you downloaded the 50506 release version of the Ajax Control Toolkit, and you are using the AsyncFileUpload control in a Visual Basic web application, then please download this updated 50508 version of the Ajax Control Toolkit.

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

Reviews for this release

have fatal bug too. "a._foregroundelement is null" and site stops working. now I reback AjaxToolKit.dll older version and worked again. this release have bug.that stops site working if I use modalPopupExtender. older ajax version haveno this problem
by hcetiner on Aug 22, 2011 at 12:26 PM
I like codePlex
by fuyaogang on Jul 23, 2011 at 5:46 AM
In an older version I had issues with the calendar going behind controls (drop dropdown) in IE7. Worked in all other versions. Just download the straight Net35 version and now the calendar does it in IE8. I thought they would have fixed this
by jtaylor178 on Jun 15, 2011 at 2:29 PM
Security Exception in Medium Trust - Rackspace CloudSites. [SecurityException: Request failed.] System.Security.CodeAccessSecurityEngine.ThrowSecurityException(RuntimeAssembly asm, PermissionSet granted, PermissionSet refused, RuntimeMethodHandleInternal rmh, SecurityAction action, Object demand, IPermission permThatFailed) +168 System.Security.CodeAccessSecurityEngine.ThrowSecurityException
by mwebsolutions on Jun 14, 2011 at 6:44 AM
Explain your rating
by sergserg1 on Jun 6, 2011 at 9:08 AM
bella bella tre bien mon chou
by Mailis on May 22, 2011 at 7:11 PM
Its good. But, when you apply a UpdatePanel around a asp:repeater or asp:gridview control. Some of the cells in the table are shifted either to the right or left.
by krishnat on May 16, 2011 at 9:57 PM
ModalPopup changes caused 'ModalPopupExtender "Object Expected" Bug' (issue tracker id 12835) again. please fix it.
by violet168 on May 14, 2011 at 2:35 PM
so far so good...... as usual love this kit.... will update if any issues come.
by y2kinfos on May 12, 2011 at 7:07 PM
Click the Downloads tab at the CodePlex site to see the list of available Ajax Control Toolkit downloads. If you are using Visual Studio 2008 then you should pick the version of the Ajax Control Toolkit for .NET 3.5. If you are using Visual Studio 2010 then you can use either the .NET 4 or .NET 3.5 versions
by lin050620 on May 12, 2011 at 2:34 AM
Excellent release - devs have really picked up where the project was left.
by rgwalke2 on May 11, 2011 at 7:57 PM
Fixes the issue I had with Drop shadow in the April release, so I was able to deploy to production environment. Good work, this tool is again usable and very effective.
by dkb1898 on May 10, 2011 at 5:48 PM