State Management :: Disposing The Cache Data After Closing The Form?
Apr 15, 2010
it is having the grid with bulk of data. So i decided to move to Cache to strore the dataset. So that it avoids in gettin the data from DB for each time the page is loading. Suppose my idea isnot good please suggest me the best way to acheive this.My question is if i suppose store the data into the cache, how can i dispose or clear the cache from the memmory for each time i close my current page or application. I dont want the cache in memmory for long time, i want only upto the time the application is running.
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Apr 2, 2010
I have a senario where i want to add the data into cache but only 100 records should be added.
Is their any predefined functions available.
Basically i dont want to write if else condition whiile adding the records wether its 100 records present or not.
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Mar 4, 2011
I have a webpage which displays some data along with a banner. The banner image is stored in the database with parameters "Pagename" and "form".
The application has been coded in such a way that when the page loads , a function checks for the banner in cache memory first with the parameters "pagename" and "form". It the banner does not exist, the new banner is retrieved from the database and is added to the cache memory. Next time when the same page is called, the banner is displayed from the cache memory avoiding the DB to be hit everything to get the banner.
Now, I do not want a specific banner to be displayed on the page. I have removed that banner from the DB but the banner still gets displayed as this banner is still there in the cache memory.
Is there any way to delete the banner which exists in cache memory without making any code changes?
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Apr 1, 2010
Im working on my first ASPX webpage now, and Im wondering if there is some way to make a cache?
With a cache, I mean a list of variables that gets transferred from a db to for insance a hashtable the first time a user loads the page. When the next user loads the page, the db doesent get touched, but the variable is collected from the hashtable.
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Dec 17, 2010
I'm running a website on a SQL 2008 database. At the moment most of my data is in cache but what I want to do is be able to update the data on a regular basis, say every 3 hours, maybe more frequently. Obviously I can set the cache to expire and pick up new data, but how can I replace part of the database (because some tables are populated by the user) in the background, so that when the cache expires the new data is picked up?
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Mar 30, 2010
How to keep the session variables even after closing the browser?
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May 29, 2010
I want to use SQL Server based Cache dependency without data source control.How can I do it?I am binding data to grid through code.
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Jan 19, 2011
writing code for Session_Start() and Session_End() such that whenever a user closes the browser without logging out he is automatically forcely logged out......And too when a user logs out normally he is re-directed to the LogOn page....
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Jun 4, 2010
As we know that closing a browser will delete cookie if the cookie does not set an expired date. However, I want to set an expired date to all of my cookies and also delete them when browser closed.
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Nov 19, 2010
I want to add a list to the cache and I would like it to stay there as long as posible.
Is there a way adding something to the cache permanently?
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Mar 12, 2011
Is it possible to cache a hole site?ll its pages, images, js, db data etc...If so is it go/bad idea?
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Aug 11, 2010
I have some weird problem. We're using Windows Server 2008 R2 x64 (8 Cores and
8 GB RAM) with IIS 7.5 and ASP.NET MVC 2.
I always cache (simple) stuff via the context cache and it seems like 9 out of 10 immediate page refreshs the Cache["MyKey"] is always null, even though there's no memory limit set on the pool and the server has lots of free memory.
I add expiring data via:
[Code]....
When just doing: Cache.Insert("MyKey", myObject); or Cache["MyKey"] = myObject; I get the same result (cache is almost always null for that key).
As you can see I added a callback, which writes the CacheItemRemovedReason to a text file, and the text file says CacheItemRemovedReason.Removed for MyKey. The doc for CacheItemRemovedReason.Removed says, that I call Remove/Insert on it, even though in my whole project there's no "Remove"-calls, just simple if(Cache["MyKey"] == null) {Cache["MyKey"] = ...} stuff.
I tried adding:
<caching><cache disableMemoryCollection = "true" disableExpiration = "true" privateBytesLimit="0" percentagePhysicalMemoryUsedLimit="90" privateBytesPollTime="00:02:00" /></caching>
to my web.config file in the System.Web-section but nothing changed :(
why Cache["MyKey"] is almost always null?
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Jul 6, 2010
I have a treeview that shown groups and their sub groups in my usercontrol. I pass the parent GroupId to the usercpntrol from the page. I want to cache nodes of treeview for every Parent Group Id. My code is works good for first time and fill the cache object . after refresh the page, cache object fill the TreeNodeCollection succesfully and everything is ok. But after another refresh, cache object is not null but is empty and TreeNodeCollection.count is zero(0). What's my fault? Please help me to solve this problem.
[Code]....
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Jul 10, 2010
I have a form on which there is a repeater control for showing records in a grid-like format. On the same page, if we click on edit row link, the details for that row come into view. After editing, we click the save button to save the data and return back to the grid [Note that all these controls are on the same page]
This process is followed for say 3 records.
After this, I would want to view only those rows for which the values have been changed (alongwith the old and the new values)
How can this be achieved? Can Datatable.getchanges() help in such a case? If yes, how? Or are there any other options that I could go for?
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Apr 5, 2010
I am looking for an elegant (i guess as elegant as it can be) solution to caching a users profile on login (whether it is session, cache, cookie, etc) and keeping it in sync when a users profile is changed. How do you guys handle this? Just simply call a Flush() method in your Save() method that invalidates the cache?
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Jul 30, 2010
Is it possible to share a cache between multiple ASP.NET applications? The apps may reside on different servers. How can one achieve this requirement?
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May 18, 2010
I'm trying to cache a complex page with lots of controls on it so that if the user navigates to it later it will look like it did when he last saw it.The page has controls which post back and other controls are populated depending on the selections.
I'm using [Code]....
after the <@ Page directive.
What happens is that a postback gets the cached page, so no processing and it looks the same regardless of user selections. So far so good. But if I browse to another page and return by a link, the cached version is ignored and the default page is created again. This is more or less the opposite to what i want.
I attempted to use the validation callback to ensure that a postback resulted in a new version, and that worked, but it still ignored the cached page if it wasn't a postback.I realise that it will need more work to ensure each user gets their version of the page from the cache, but why bother if this doesn't work.
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Sep 24, 2010
I know the big difference, but one thing is confusing me. Cache works only on a single machine on webfarm and to make it globally we use Velocity or memcache.So is static does same, or is it already work globally ?
eg
Cache["someid"] = "value"; //this will only work on single machine cache,
static string abc = "value"; // will this work on single machine or globally ?
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Dec 12, 2010
Is it suitable to store some app settings in Application Cache? I mean settings that might need to be changed frequently...
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May 9, 2010
I have a page that has a grid view.
The user selects a person from a dropdown list and then clicks a button that adds the users info as
a new row in the grid.
Adding the new row involves doing an insert and rebinding the grid which is a slow process.
How do I use the cache to see the grid update right away?
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Oct 6, 2010
I wanted to know the best practice for caching data. Say I have some control example a dropdown list which is populated from my db. Now this dropdown is global and used across many pages. I was thinking of not going to database everytime to fetch data for this dropdown and put the result in Cache. And then populate this dropdown from cache. Is this a good practice or if there is another approach. Can I store my datareader in cache and then use it globally. Also could I do this in application start event?
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Dec 21, 2010
asp.net.2 I am trying to update the website but the cache kips on working. How can I relies the cache on site.
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Dec 9, 2010
I am Caching dataset in my application, the issue is when there is a large set of data the OutOfMemory exception is thrown.
I want to check for the this exception and when it happens I want to remove the cache object.
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Sep 24, 2010
I am working with asp.net mvc and i am trying to get acces to a object that is in the cache.In the Application_Start() of Global.asax.cs i create and store an object in the cache like this:
Translator translator = new Translator();
HttpContext.Current.Cache.Insert("Translator", translator, null, System.Web.Caching.Cache.NoAbsoluteExpiration, System.Web.Caching.Cache.NoSlidingExpiration);
Translator holds a dictionary with translations.Now i want acces to this object from the cache to use functions and get values from the dictionary.I know i can acces it like this HttpContext.Current.Cache.Get("Translator") or Cache.Get("Translator") in the views But how can i use the functions of the object ? The meaning of the cache is to have a object that is accesable througout the webapp right ?
Do i have to make an object and asses the value of the Cache.Get("Translator") to it, so i can use the functions or is there another solution?
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Oct 8, 2010
I have to split a long form into two pages. In the first page, I have a button "Next Page" to second page and in second page, a button "Previous page" to go to first page. How do I keep the form data when click "next page" and "previous page"?
I am using session variables to pass the form data. I have the server control Enableviewstat as true, but it still doesn't work. What else should I do? My code as below:
[Code]....
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