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Home › Learn › ASP.NET AJAX Videos › How Do I: Trigger an UpdatePanel Refresh from a DropDownList Control?

[How Do I:] Trigger an UpdatePanel Refresh from a DropDownList Control?

In most of our videos on the ASP.NET AJAX UpdatePanel, we have used a Button control to cause an UpdatePanel to refresh its content. Yet we may use any event raised by any other ASP.NET server control. This video uses the SelectedIndexChanged event of the DropDownList control as a trigger for refreshing an UpdatePanel control. We see also how we can dynamically change the stylesheet class associated with the controls contained in the UpdatePanel control.

Presented by Joe Stagner

Duration: 9 minutes, 5 seconds

Date: 22 August 2007

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Audio downloads: AAC | WMA | MPEG-4 | MPEG-3 | MPEG-2

Comments : 5

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rtp : On May 27, 2008 4:24 PM said:

Hi Joe,

Your AJAX videos are invaluable -- many thanks for making them available! On the page that shows all of the video "thumbnails," what technique are you using to pop up a synopsis in a box when a thumbnail is rolled over?

-rtp

cv_vikram : On August 07, 2008 11:31 AM said:

Good tutorial...thanks

AmanJha : On November 02, 2008 6:13 AM said:

Thanks Joe,

Really Videos are very helpful.

alfredo : On January 26, 2009 2:51 PM said:

Joe I enjoyed all your valuable instructions on Update Panel. It is greatly appreciated here. Also it seems to me it is possible to achieve this lesson without any if statements by using SELECT Method by defining a Parameter Source Control and Control ID in DropDownList iff CSS colors were defined in an ObijectDataSourceTable in a Sql format.

abhijit_biradar : On August 05, 2009 9:57 AM said:

abhijit

this is cools

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