October 2010
Intermediate to advanced
1920 pages
73h 55m
English
Content preview from ASP.NET 4 UnleashedSpecifying
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Specifying UpdatePanel Triggers
By default, an UpdatePanel hijacks any postbacks that any of its child controls performs. For example, if a Button control is contained in an UpdatePanel, the UpdatePanel hijacks the button Click event and performs an Ajax call instead of the normal postback.
You can cause an UpdatePanel to refresh its contents from a control located outside of the UpdatePanel by specifying a trigger. For example, the page in Listing 38.5 contains a Button control outside of an UpdatePanel that causes the UpdatePanel to refresh its content.
Listing 38.5. TriggerUpdatePanel.aspx
The UpdatePanel in Listing 38.5 includes a Triggers ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.