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Ajax Control Toolkit: new controls, bug fixes

(c) Bertrand Le Roy 2006 And we have a new release of Ajax Control Toolkit. I didn’t work on this one but there are some nice things in there nonetheless :)

First, new controls!

SeaDragon: I’ve blogged before about Seadragon, the JavaScript-only way to do Deep Zoom. It became a lot easier to use a few month ago when the need for tools disappeared and you can just point to any image on the web and immediately get the URL and script tag to put on your page:

Now with this release of Ajax Control Toolkit, including and controlling Deep Zoom from an ASP.NET page is also very easy:

<ajaxToolkit:Seadragon ID="Seadragon"
CssClass="seadragon" runat="server"

James Senior just released a screencast on how to create Deep Zoom contents for the new Seadragon control:

AsyncFileUpload: This is by far one of the most requested controls for ACT. File upload fields, while a part of HTML, do not work with Ajax/XHR requests (for security reasons, JavaScript can’t access the contents of the field). The only way to use them is to get the browser to do a real form post.

This new control makes it a lot easier to handle file uploads from your Ajax applications by providing an abstraction on top of the form posting:

OnClientUploadComplete="uploadComplete" runat="server" ID="AsyncFileUpload1"
Width="400px" UploaderStyle="Modern" UploadingBackColor="#CCFFFF"

It works pretty much as advertised: just drop the control on the page, and you can upload files without a full postback. It looks just like Ajax and requires no plug-in of any kind.AsyncFileUpload

The control has client and server-side events that get triggered when the file has been uploaded. On the server-side, you have access to the uploaded file’s byte stream, which you can save to disk (or database, or whatever).

Bug fixes: This release also has some new bug fixes (courtesy of Obout) for some of the top-voted issues.

Download the new release here:

Try the live demos here:

Stephen's in-depth post about this release:


kristofera said:

Great to see that the control toolkit is still alive.

It would be neat with some release notes, or a summary of fixes and changes in this release.

I tried to figure out how to extract a fix list from the 'top voted issues' thing you have linked to but it is not totally clear to me which ones have been fixed and which ones are just popular bugs...(?)

# October 1, 2009 12:19 AM

Fabien said:

C'etait notre ballade au Mt. Pilchuck ca :) Cool!

# October 1, 2009 2:45 AM

Mohamed Meligy said:

Great news, especially Async File upload.

But I can see the samples website is not updated. Clicking on the control names goes to 404 page and browsing the samples page list does not show them in it.

Can you check ?


# October 1, 2009 6:41 AM

Town said:

These look great, although the links to the control pages are giving 404s and i can't see the new controls listed on the Live Demos link.

Also, are these 3.5 only or is there a 2.0 version? Ta :)

# October 1, 2009 7:53 AM

maxp said:

AsyncFileUpload demo page is erroring.

# October 1, 2009 10:59 AM

nmreddy83 said:

nice to see new additions on ACT. I do not think www.asp.net/.../Seadragon.aspx is working

# October 1, 2009 12:44 PM

Bertrand Le Roy said:

Thanks to all who reported the 404s on the sample pages: The sample site has not yet been updated.

@Town: ACT has been 3.5 and up for more than a year now, sorry. In principle, it should still be possible to compile to 2.0, I suppose, but I cannot promise it will work.

# October 1, 2009 1:44 PM

Bertrand Le Roy said:

Update: the sample site has been updated and the live demos of the upload and deep zoom controls are now available.

# October 1, 2009 4:41 PM

Bertrand Le Roy said:

@CraigG: yes, the live sample site has a dummy URL as the upload address. That it happens in your app is more curious and probably a misconfiguration. Hard to say without seeing your code. You can contact swalther at microsoft if you need more assistance.

# October 9, 2009 3:10 PM

AZ said:

The ASYNC Fille Upload example demo is not working on IE8 and FireFox 3.5

# October 18, 2009 6:13 AM

subha said:


 when the page is postback,navigated or revisited The ASYNC Fille Upload is not clear.can u give idea

# October 26, 2009 7:18 AM

Bertrand Le Roy said:

@subha: you should file a bug here: ajaxcontroltoolkit.codeplex.com/.../Create.aspx and/or ask your question on forums.asp.net/1022.aspx

# October 26, 2009 1:58 PM

Jm6 said:

AsyncFileUpload doesn´t work with the opera 10  browser yet... (25Nov2009)

# November 25, 2009 1:14 PM

Bertrand Le Roy said:

@Jm6: did you file a bug?

# November 25, 2009 1:45 PM

Ankur Nigam said:

From where can I get either either DZI processed or unprocessed image you have used in this webpage?

In fact, I am very much interested in the Bicycle image used to showcase deep zoom functionality on Seadragon official page as well.

Do you have the image or its references, from where i can download?

# July 18, 2011 12:51 PM

Bertrand Le Roy said:

@Ankur: The image I used above is a composite of pictures I took on top of Mount Pilchuck, WA. I do not know the pedigree of the sample images the Seadragon team used for their samples. You'd have to ask them.

# July 18, 2011 2:10 PM