asp.net cache css and script but not the page

Question

In my master page in the Page_Load method, I have this line:

Response.Cache.SetCacheability(HttpCacheability.NoCache);

Basically, I don't want to cache the page. I do want to cache the .js and .css files but when I reload the page, these files don't get loaded from the browser cache but instead get reloaded.

What do I need to fix?

Thanks.

Do you have apache? It's been a long time since ive done webdev and not sure if its compatible with asp. — user1241335
– user1241335, Commented May 12, 2012 at 14:09
I don't think js and css files will be affected by the codes in your master page because those files are static contents, rather than asp.net dynamic pages. — user900202
– user900202, Commented May 12, 2012 at 14:11
@allentranks: well when I look at the Chrome Network tab, I see that the only files that's reloaded from cache is jquery (it's loading from the google CDN). All others are all reloaded from my server. — frenchie
– frenchie, Commented May 12, 2012 at 14:40
Does IIS return a Cache-Control: private response header for the .js and .css files? — Michael Liu
– Michael Liu, Commented May 12, 2012 at 15:06

Eugene Trofimenko · Accepted Answer · 2012-05-12 16:22:45Z

3

Add these lines in the html meta section

<META HTTP-EQUIV="CACHE-CONTROL" CONTENT="NO-CACHE">
<META HTTP-EQUIV="EXPIRES" CONTENT="0">
<META HTTP-EQUIV="PRAGMA" content="NO-CACHE">

in ASP page

// Stop Caching in IE
Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache);

// Stop Caching in Firefox
Response.Cache.SetNoStore();

This article can be usefull to resolve your issue

http://www.codeproject.com/Articles/11225/Disabling-browser-s-back-functionality-on-sign-out

P.S. If it didn't help. You can use cheat like this: <%= here you should add some random number for example Ticks %> - add it for elements which shouldn't be cached. For example:

<link rel=stylesheet href="main.css?<%= ... %>">

edited May 12, 2012 at 16:22

answered May 12, 2012 at 16:01

Eugene Trofimenko

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Community · Accepted Answer · 2017-05-23 10:34:43Z

2

You need to set up caching for static resources (.js and .css) files. This is not enabled by default.

See this SO answer for more details: https://stackoverflow.com/a/2196848/69868

Also note that when you are reloading the page using F5/Ctrl+F5, some browsers will ignore caching instructions and they will always fetch fresh content (for example Firefox and Ctrl+F5). If you want to test caching, reload the page by re-entering the URL in location text box.

edited May 23, 2017 at 10:34

CommunityBot

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answered May 12, 2012 at 15:43

Miroslav Bajtoš

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