October 2010
Intermediate to advanced
1920 pages
73h 55m
English
Content preview from ASP.NET 4 Unleashed
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View State and Control State
The standard ASP.NET controls retain the values of their properties across postbacks. For example, if you change the text displayed by a Label control, the Label control continues to display the new text even if you repeatedly post the page containing the Label control back to the server.
The ASP.NET Framework takes advantage of a hidden form field named __VIEWSTATE to preserve the state of control properties across postbacks. If you want your controls to preserve the values of their properties, you need to add the values of your control properties to this hidden form field using the appropriate APIs—never access this hidden form field directly.
The ASP.NET Framework supports two methods of preserving values across ...
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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.