OutputCache Shared=True not working as expected

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curtis_mcmillin - 16 Mar 2005 00:53 GMT

I have several ASP.NET web pages, on which I place a user control with
caching enabled. I would like to share the cached version of this control
across all pages on which the control resides, but, vary it by a property in
the user control. So, my user control @Cache directive looks like this:

<%@ OutputCache Duration="600" Shared="true" VaryByControl="SelectedItem" %>

...where 'SelectedItem' the name of the public property on the user control.

The control is indeed being cached, as is evidenced by the breakpoint set in
the control load event. It fires only once, however, which I would not
expect. My expectation is that a seperate copy of the control's output would
be placed in the cache for each unique 'SelectedItem' value.

Has anyone ran across this? Any and all help/suggestions would be greatly
appreciated.

-Curtis McMillin, MCSD
curtis_mcmillin@hotmail.com
curtis.mcmillin@conocophillips.com

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Alvin Bruney [ASP.NET MVP] - 16 Mar 2005 19:57 GMT

The output cache directive is overriden at the page level. Do you have any
settings at the page level that may override the settings of the user
control?

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Regards,
Alvin Bruney
[Shameless Author Plug]
The Microsoft Office Web Components Black Book with .NET
available at www.lulu.com/owc
_________________________

>I have several ASP.NET web pages, on which I place a user control with
> caching enabled. I would like to share the cached version of this control
[quoted text clipped - 21 lines]
> curtis_mcmillin@hotmail.com
> curtis.mcmillin@conocophillips.com

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jawadak@gmail.com - 24 Mar 2005 21:46 GMT

Hi Curtis,
If selectedItem property refers to a Value selected from the Drop
down that is placed in the User Control then you have to use the id of
the drop down in the output cache directive i.e.
<%@ OutputCache Duration="600" Shared="true"
VaryByControl="ddCountries"
%>

Where ddCountries is the id of the dropdown whose selected value you
want to cache to differentiate from. The Public propert doesn't work
for me in the VaryByControl as well.

Thank you,
Jawad

> The output cache directive is overriden at the page level. Do you have any
> settings at the page level that may override the settings of the user

> control?
>
[quoted text clipped - 7 lines]
>
> "curtis_mcmillin" <curtismcmillin@discussions.microsoft.com> wrote in

> message news:5B323109-1ED2-421A-8700-60A41764794A@microsoft.com...
> >I have several ASP.NET web pages, on which I place a user control with
[quoted text clipped - 7 lines]
> >
> > ...where 'SelectedItem' the name of the public property on the user

> > control.
> >
[quoted text clipped - 11 lines]
> > curtis_mcmillin@hotmail.com
> > curtis.mcmillin@conocophillips.com

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OutputCache Shared=True not working as expected

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