August 2003
Intermediate to advanced
1000 pages
46h 23m
English
Content preview from ASP.NET in a Nutshell, 2nd Edition
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HttpCacheVaryByParams | 491
System.Web
Namespace
This is the Title of the Book, eMatter Edition
Copyright © 2008 O’Reilly & Associates, Inc. All rights reserved.
dependencies that a cached page may have and either allow the page to be served or
invalidate it and require the page to be recompiled. To invalidate a page, set the valida-
tionStatus parameter to HttpValidationStatus.Invalid.
Passed To
HttpCachePolicy.AddValidationCallback( )
HttpCacheVaryByHeaders
System.Web (system.web.dll)
sealed class
This class is used to set the VaryByHeaders property of the HttpCachePolicy class. It allows you
to specify that separate versions of a page should be cached for different languages or
character sets. For example, if you set the UserCharSet property of this class to True, the
“Accept-Charset” field will be included in the HTTP Vary header and a separate
version of the page will be cached for each request that has a different character set.
The cache page will be reused only among requests that have the same Accept-Charset
header.
Alternatively, if type safety is not important, you can set the default Item property to a
string that contains the name of a header, or a list of header names separated by semi-
colons (;). Cached pages will then be reused only among requests that have the same
values for the headers you identify.
Returned By
HttpCachePolicy.VaryByHeaders
HttpCacheVaryByParams
System.Web (system.web.dll) ...
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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.