C# - How To Implement Caching For The Whole Page Except User Control

Sep 25, 2010

I have aspx page with a user control. I want to implement caching for the entire page except the user control.

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I have a page with a number of user controls, In one of my user controls I have a button event. I turn on output cache for the user control that has the button and vary by control using the ID property of a hidden field control in the user control. whenever I turn on the output cache my button event doesn't fire.

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Output Caching A Page Except A User Control In It?

Mar 4, 2011

I have a page which contains a user control. The structure of the page is as shown below:

Incase your not able to see the above image, check it at [URL] Now, apart from the contents of the UserControl, I'd like to cache the entire page. I tried using the OutputCache attribute in the .aspx page, however it caches the contents of the UserControl as well.

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Note that the web app page urls may, or may not contain the name of the user authenticated and that there are also pages available to both authenticated and both authenticated users.

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I have a user control (.ascx file). I simply put this tag in the page declarations section:

<%@ OutputCache Duration="60" VaryByParam="none" %>

It is not caching. The control makes a call to SQL and displays some information. I tested it by changing a value in the database and refreshing the page. The control keeps making a call to the database eventhough I have the duraction set to 60 seconds. Am I missing something? Do I need to add code in the Page Load event?

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I have a user control (say PricingGrid.ascx) which generates a pricing grid on a given product's page. I pass the user control 2 parameters : currencyId and productId. The user control has output caching specified by

[Code]....

I am adding PricingGrid.ascx to my page programatically, i.e. using LoadControl [URL]If the user changes their currency and refreshes the page, the cached version of their original currency is still showing, until the 60 seconds expires. Is there any way to force the page to check :1) Does a cached version of PricingGrid.ascx with their new currency exist?2) If so, retrieve that version, and if not, create that version.If I output all the keys in the Page.Cache object on PageLoad, I'm not seeing my user control in the output.

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My asp.net app is heavily using user controls and is high load; my concern is that loading user controls for every request (Page.LoadControl(controlPath)) is sub-optimal at best. I was thinking of caching an instance of loaded user control in HttpRuntime, but I don't know how's it going to behave when multiple connections (threads) will try to fetch it from the cache and modify properties - I guess trouble is waiting there. Any good way to optimize user control loading?

Again, I am talking about caching user control, not it's html output (which it makes no sense caching as it's [html output] going to be different every time you use it)

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Caching User Control And Clearing That Cache Programmatically?

Jul 13, 2010

I'm trying to cache user controls and on some pages i want to cache single objects. There are multiple ways of implementing caching, and my head is breaking over it.

The way I see the caching options now:

You have the PartialCaching option which is set to cache the control for 30 minutes, and after that it clears itself... You have the varyByParam to identity the page by its querystring paramaters... or other vary options

But i just cant find an appropriate way to add caching to a control, and be able to clear the caching programmatically when i update one of the objects used in the control from the backend.

You can do HttpContext.Current.Cache.Insert(), which accepts a key on which you can destroy the caching item later by using remove... This can save objects in cache but can you use options like varyByParam?

My questions are burnt down to two:

Is there a way to clear the caching on specific user controls from the code? If yes, can this be done according to the varyby options? How would the object caching respond to logged in users or anonymous users using Insert()?

EDIT: I'm caching multiple things.... And I'm really flabbergasted in which choice to make referring to caching. Can the Cache.Insert be varied by Parameters?

The main problem is peopling editing things from the backend, which needs to trigger an event that reinstantiates or clears all caching items referring that object.

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I've added this to my global.asax:

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[Code]....

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What am i doing wrong here?

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[code]....

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[code]....

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