OK, this is driving me crazy. I've searched for hours & tried almost everything, but scripts downloaded with ScriptManager.axd will not cache. They ALWAYS end up marked as no-cache with a expires=-1.
I posted this at the following link , but none of that worked.
http://forums.asp.net/p/1728138/4639833.aspx/1?Re+ScriptManager+axd+and+caching
Some things I've tried:
1) Set compilation debug="false" in web.config.
2) Added a HTTP handler that searched for ScriptManager.axd and then set headers. This is described here: http://www.componentart.com/community/forums/p/34409/34409.aspx. I actually set a breakpoint in the http handler & confirmed that it was being hit, but guess what? None of the headers I set for ScriptResource.axd ended up in the response!!!
3) Added this section to web.config.
<system.web.extensions >
<scripting >
<scriptResourceHandler enableCompression=“true” enableCaching=“true”/ >
</scripting >
</system.web.extensions >
4) set this attribute in machine.config
<configuration >
<system.web >
<deployment retail="true" />
</system.web >
</configuration >
5) Set ScriptMode="Release" in the ScriptManager tag.
Seriously, what gives? Why is this so difficult? Is the ScriptManager that buggy? Am I missing something obvious? WHY didn't the response attributes I set in the HTTP handler end up in the response?