October 2010
Intermediate to advanced
456 pages
10h 16m
English
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Asynchronous generic handlers
When you use AJAX-type asynchronous requests from your page to retrieve data from the database, you would want to use an .ashx generic handler or maybe a web service to process that request, rather than a full-blooded .aspx page. This will save you the overhead of the full page life cycle.
Accessing a database asynchronously from a generic handler is different from doing the same from a page. Let's see how this works.
Synchronous version
Firstly, let's have a quick look at a synchronous generic handler. We'll then work that into its asynchronous counterpart using the asynchronous data access layer we just saw.
You'll find the code in the downloaded code bundle in the folder ThreadStarvation_Db_Sync, file Handler.ashx ...
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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.