October 2010
Intermediate to advanced
1920 pages
73h 55m
English
Content preview from ASP.NET 4 UnleashedBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Using Push SQL Cache Dependencies with Page Output Caching
You can use Push SQL cache dependencies when caching an entire ASP.NET page. If the results of any SQL command contained in the page changes, the page is dropped automatically from the cache.
The SqlCommand object includes a property named the NotificationAutoEnlist property. This property has the value True by default. When NotificationAutoEnlist is enabled, a Push cache dependency is created between the page and the command automatically.
For example, the page in Listing 29.46 includes an <%@ OutputCache %> directive that includes a SqlDependency attribute. This attribute is set to the special value CommandNotification.
Listing 29.46. PushSQLOutputCache.aspx
The page in Listing 29.46 ...
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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.