Hello Peter,
Thanks for using Microsoft Newsgroup Service. My name is Hongye Sun [MSFT]
and it is my pleasure to work with you on this issue.
DataList control in System.Web does not natively support this function.
That is because it can only do data binding at server side. To workaround
this, we have three options:
1. UpdatePanel
(
http://asp.net/ajax/documentation/live/overview/UpdatePanelOverview.aspx)
This is the most common way to workaround suck kind of issue. By
surrounding DataList with an UpdatePanel, it makes DataList rendered
partially. UpdatePanel will trigger a partial page post back to server
side, and server code is responsible to re-bind the data to DataList
control. Then server will send the render result within the UpdatePanel to
client side, and client side will use javascript to replace the content in
UpdatePanel.
2. Ajax Data Controls (
http://www.codeplex.com/AjaxDataControls)
This is an open source control. It contains an ajaxified DataList. The
DataList is implemented to do data binding at client side, so that you can
change its data and re-bind it by javascript. However, compared to ASP.NET
controls under System.Web, the ajax data controls are not proved to be
stable enough in business applications. My suggestion is that if
UpdatePanel does not meet your requirement and your usage of DataList
control is not complex, you can customize the ajax data controls code to
meet your business requirement.
3. Support this feature by hidden control
This option is only applied in very rare situations, where the usage of
DataList is very simple. Here is an example:
http://www.dotnetspider.com/resources/18034-Shuffle-Images-DataList-using-Ja
va-Script.aspx.
Inside the example, it saves image URL data and Image control's client ID
into separate hidden controls. On the client side, it gets the control by
client id and set URL into it on the fly.
Please take a look of the workarounds above and let me know if they meet
your requirement. Thanks.
Regards,
Hongye Sun (
[email protected], remove 'online.')
Microsoft Online Community Support
Delighting our customers is our #1 priority. We welcome your comments and
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