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I put UpdatePanel with a Timer as a trigger in my webpage. Also, outside of the panel, I put a TextBox with a WatermarkExtender.

When the timer ticks, the UpdatePanel refreshes. Also, the watermark blinks (it disappears from the text box and reappears). And this happens every 1 second. This is a big issue.

Any help please?

Josh Darnell
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Bilal Salas
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  • May be this will help you!! http://stackoverflow.com/questions/12367813/ajaxcontroltoolkit-watermark-extender-timer-blink – Suraj Jan 14 '13 at 07:41
  • Does the timer trigger a postback? It seems likely that the blinking watermark is the result of the control being unloaded and reloaded. Mostly likely because of some postback type of event – Ortund Feb 14 '13 at 07:39

1 Answers1

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There is no way to fix this because of how the extender works. It actually swaps out textboxes on postback. The only way to fix would be to manually write your own extender js code. You can read more about this problem here

http://forums.asp.net/p/1073683/1605937.aspx

and here

http://mattberseth.com/blog/2008/06/rewriting_the_textboxwatermark.html

Vortex
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