ASP.NET AJAX Control Toolkit - v15.1.3 - Maintenance update available

ASP.NET Team Blog
18 August 2015

A new release of the ASP.NET AJAX Control Toolkit, v15.1.3, is now available. We've included several bug fixes and new features.

You can download the latest release here:

ASP.NET AJAX Control Toolkit v15.1

Click the download button above and the get the latest bits.

Or use the Nuget package: ASP.NET AJAX Control Toolkit Nuget package

(If you missed news about the latest v15.1 ASP.NET AJAX Control Toolkit release then please read this helpful blog post.)

v15.1.3 Includes:

1. Bug fixes

  • Item 15788 - UpdatePanelAnimationExtender OnUpdating runs on every postback
  • Item 27072 - SliderExtender within UpdatePanel causes vertical scrollbar to scroll in Chrome and Safari
  • Item 27243 - Double HTML attributes rendered by TabPanel
  • Item 27294 - Issue with multiple AsyncFileUpload Control
  • Item 27369 - AjaxFileUpload: Drag and Drop is not working on IE10 for Windows 7
  • Item 27373 - PieChart doesn't render all segments correctly
  • Item 27434 - Keyboard Selection not Working
  • Item 27470 - TextBoxWatermarkExtender causes autocompletetype not to work
  • Item 27481 - Error in Masked edit validator
  • Item 27511 - img/png
  • Item 27547 - HtmlEditorExtender Causing Javascript Error on IE 11
  • Item 27566 - Multiple image upload using html editor extender control
  • Item 27595 - Mask Edit Extender Issue
  • Item 27612 - Editor Extender JAVA script error
  • Item 27655 - Corrupted Files in AjaxFileUpload
  • Item 27717 - HtmlEditorExtender error with Chrome 36.0.1985.125
  • Item 27735 - FileUpload Control Displays Upload Button with No Files
  • Item 27745 - Javascript error in Chrome with HtmlEditorExtender: Uncaught IndexSizeError
  • Item 27764 - MaskedEditExtender type Date fails with "hu-HU" culture
  • Item 27812 - Version 15.1 TabContainer CSS Inconsistency for Disabled Tabs
  • Item 27813 - Focus hidden tabs
  • Item 27844 - CascadingDropDown populated event not working as (I) expected
  • Item 27846 - TabContainer in 15.1
  • Item 27853 - AjaxControlToolkit 15.1 Combobox VS2013
  • Item 27855 - Where is ComboBox predefind theme images?
  • Item 27857 - SliderExtender handle image align broken in vertical orientation
  • Item 27858 - MaskedEdit extender culture setting issue
  • Item 27860 - big issue: htmlextender bug
  • Item 27865 - Using AJAX Password Strength with Modal Popup
  • Item 27875 - v15.1.x ValidatorCallout static images - incorrect path with ScriptManager.EnableCdn= false
  • Item 27892 - HtmlEditorExtender: BackColor and ForeColor buttons is not working

2. Features and improvements:

  • Item 8626 - Slideshow effects
  • Item 27075 - Table Border/CellPadding/CellSpacing - Replace with CSS

3. Sample site updates:

4. Internal improvements:

Client testing introduced.


Helpful documentation articles are available on the CodePlex site:


Get the latest ASP.NET AJAX Control Toolkit v15.1.3 release and let us know your feedback by reporting it here.

How to upgrade to v15.1.3

Please take a look at the 'How to upgrade to v15.1 release' article to see how to migrate your existing ASP.NET AJAX Control Toolkit projects to the new v15.1.3 release.

Try DevExpress ASP.NET

We’d like to thank you for installing the DevExpress Edition of the AJAX Control Toolkit and look forward to your feedback as you begin its use.

When we took over the fabulous ASP.NET AJAX Control Toolkit, our goal was to reach those web developers who want to use great web user interface controls for their web projects and DevExpress ASP.NET provides that and much more.

Try the free DevExpress 30 day trial.


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