I have a form that has n dropdownlists, and the form has gotten so big that it now weights over 1.2MB...I was wondering, is it possible to load the datasource items once in the browser and have all related dropdownlist use that single datasource to conserve bandwidth?Something like, load datasource into div, and on page_load have all dropdownlist load from that div...
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i am using ScriptManager in my webpage. i am also using a lot of pagemethods in this page. When i look at the viewsource of the browser after the page has been rendered i find a lot of javascript which has been generated by the scriptmanager.
how can i browser cache all these scripts so that they are not loaded everytime the page is rendered.
In my site i m redirecting to login page when i m clicking on loguot button. before that i have written follwing code for clearing cache/history-
Session.Clear();
Session.Abandon();
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.Now.AddSeconds(-1));
Response.Cache.SetNoStore();
but when i m pasting previous page url in address bar then it is showing that page. i dont want to show that page.
I have issue about multiple login in asp.net.
Case this happen:
User X login as "user1" in web browser.
Then user Y also login as "user1" also in another web browser.
User Y got error message "Another user log in some account".
That is work as expected.
If X, close their web browser. Then try again to login in as "user1".
X get also get "Another user log in some account".
So i trying debug then i found session is remove when web browser is close, but cache still remaining in web browser.
how to clear cache when user close their browser, (not tab).
If i enable client side cache in my asp.net application where it store that cache controls in my computer
View 1 RepliesI have a menu on my site that changes depending on whether the user is logged in or not. With browser caching, the menu "gets stuck" in either state and is confusing to users.They'll login, but the menu won't update because it's still cached in the unauthenticated state... and vice versa.How is this typically handled? Can we refresh the user's browser cache from our code? Or do I just not allow browser caching? (would rather use it, very nice bump in speed).UpdateHere's how I set client-side, browser caching in my asp.net mvc 2 app:
public class CacheFilterAttribute : ActionFilterAttribute {
/// <summary>
/// Gets or sets the cache duration in seconds. The default is 10 seconds.
[code]...
Not sure if i'm posting in the right forum, if not, please move it...i have the following issue... I want to "disable" browser's back button. Seems it's not possible, but using cache.setcacheability and timing it, kinda disables the option of navigating back. I need this because in some pages of my webpage, i keep values in a Session variable so when a page loads, i need to check that variable, and, if navigating back, cant do that. I also "set cache to false" because if someone closes session, and i allow cache, someone else could handtype a url in that same pc and see the page without login (though if he/she tries to navigate through it will be kicked out because when loading a new page, i'll know that he/she is not logged) but i dont want to allow even that,
that's why cache is disabled. The problem is that loading over and over again my masterpage (header, footer, menu and stuff) is going to slow down the webpage, because every time there's a request, the page has to be sent again completely. So, is there something like a "mix" mode where i can allow cache just for a few things? If not, what's the best practice to achieve both things i'm trying: speed and security?
i am using Jcrop to give users the option to crop there images, i have hit a small caching problem.
if you open an image which is already on the server and crop it. my jcrop works and crops the image fine but when i reload the image the old version is displayed. i have this inside an update panel.
so is there a way of removing the browsers cache before i reload the image?
As part of the deployment, we need to have a maintenance page displayed for our web site. The issue we are experiencing is that when the maintenance page is active and ISA rule is configured to redirect to the maintenance page. We see the following behavior:
The user is not displayed the maintenance page, but is displayed a splash page with the English and French buttons. Click on any button displayed a 404 error regarding the URL / File not found. After clearing the local cache and reloading the browser, the maintenance page is displayed successfully.
The same behavior is noticed one we have disabled the ISA rule for the maintenance page and re-enabled the ISA rule for the the Website. The user is presented with the 404 error and once the cache is deleted, the user can see the Website.The issue is a cause by browser retrieving the website pages from the cache and not directly from the webserver.
how to remove css,java script file from browser cache for IE6 and IE7 ?
View 4 RepliesI am inserting and updating the image from html file upload to my gridview / insertion goes fine , but when i update the image by clicking on edit using onselectedindexchanged event of gridview, I fetch the image then change it with other image, with this simultaneously i rebind the gridview, in the beck-end everything goes fine it updates and replaces the image but in gridview it won't show after updated. I am using postbacktrigger on my submit button, but gridview won't refreshes, until and unless i click on address bar and press ENTER , or until i won't press CTRL+F5 to clear the browser cache.
View 1 RepliesI am using Html.RenderAction<CartController>(c => c.Show()); on my master Page to display the cart for all pages. The problem is when I add an item to the cart and then hit the browser back button. It shows the old cart (from Cache) until I hit the refresh button or navigate to another page.
I've tried this and it works perfectly but it disables the Cache globally for the whole page an for all pages in my site (since this Action method is used on the master page). I need to enable cache for several other partial views (action methods) for performance reasons.
I wouldn't like to use client side script with AJAX to refresh the cart (and login view) on page load - but that's the only solution I can think of right now.
I have an external javascript file which I include to my page on the code behind (as seen below).
My problem is, when I my page makes a postback (not partial one), I check the loaded scripts by using FireBug, and I cannot see the javascript file in the list after the post back. I asusmed once it is included to page on the first load, browser will be caching it so that I do not need to re-include it.
What am I doing wrong?
[code]...
Assume a simple aspx data entry page in which admin user can upload an image as well as some other data. They are stored in database and the next time admin visits that page to edit record, image data fetched and a preview generated and saved to disk (using GDI+) and the preview is shown in an image control.
This procedure works fine for the first time however if the image changes (a new one uploaded) the next time the page is surfed it shows previously uploaded image. I debugged the application and everything works correct. The new image data is in database and new preview is stored in Temp location however the page shows previous one. If I refresh the page it shows the new image preview. I should mention that preview is always saved to disk with one name (id of each record as the name).
I think that is because of IE and other browsers use client cache instead of loading images each time a page is surfed. I wonder if there is a way to force the client browser to refresh itself so the newly uploaded image is shown without user intervention.
when i first run my applcation some time its showing the data from cache.i want to avoid it in first time .
i want to cache my all images/css/js file what is the efficient way to do it.
i have lot of images folder /js /css files.
My requirement is to get the file size in client side. there is no problem in FF but in IE you can't do that unless u r using an activeX object. So we thought of putting it in browser cache and reading the file size from there and when we post it to the server we will be taking it from the cache and send it to the server.
View 4 Repliesi extended a dropdownlist on a textbox. now how to set the datasource of this textbox.im tryingtextbox1_dropdownextender.
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How to prevent browser from caching image, Trsponse.Cache.NoStore didn't work
i am trying to use nhibernate second level cache, i have configured my cfg as
<property
name="cache.provider_class">NHibernate.Caches.SysCache.SysCacheProvider,NHibernate.Caches.SysCache</property>
<property
name="cache.use_query_cache">true</property>
<property
name="cache.use_second_level_cache">true</property>
<property
name="cache.default_expiration">120</property>
and also enable cache in presistent class as <cache
usage="read-write"/>
now what steps i have to take to check whether the cahce is working or not, do i have to write some C# code for cache?
I have SqlDataSource in 2 pages: Page1.aspx and Page2.aspx. I setup all SqlDataSource with EnableCaching is "True" and CacheDuration is "Infinite", same setup for all 2 SqlDataSource as below:
<asp:SqlDataSource
ID="SqlDataSource1"
runat="server"[code]....
When visitor access Page1.aspx, the SqlDataSource in Page1.aspx will access SQL server to retrieve database and cache the database.
Question-1: After accessing Page1.aspx, then the visitor access Page2.aspx. Will visitor access again SQL Server database in Page2.aspx?
Question-2: One cache at one SqlDataSource is for one page and for one user? Or, one cache at one SqlDataSource is for multiple pages and for one user? Or, one cache at one SqlDataSource is for multiple pages and for multiple users?
i use 2 dropdownlist with 2 object data source first dropdownlist to display departments name using object datasource (field to display DeptName , value of field DeptID)
second dropdownlist to display Employee name but depend on departments (field to display EmpName , value of field EmpID)
how to display employee name in dropdownlist depend on departments name in the other dropdownlist
2 tables
1 table deprtments with column (DeptID , DeptName , DeptDescription)
2 table Employee with column (EmpID , DeptID , EmpName)
I think it is a problem that SqlCacheDependency may invalidate a cache item while it is being set:
function getCacheItem()
if cacheitem is empty
cacheitem = something
AND AT THIS POINT SqlCacheDependency INVALIDATES THE cacheitem
end if
return cacheitem
end function
how can we prevent this? Is it somehow possible to specify a ReaderWriterLockSlim for the SqlCacheDependecy to use?
I'm having a real problem trying to get the SQLCacheDependancy working, whenever I add data to the Cache with a SQLCahceDependancy it is invalidated almost immediately. So when I try to access that cache key again it is always null.
My setup is as follows: SQL server 2005 (on remote machine)
Visual Studio 2005 ASP.NET 3.5 on Windows XP Machine.i have run the following script on the DB to set up permissions etc (these script are from various post):
-----------------------------------------------SQL Scripts start -----------------------------------------------------------------------------------------
use db_Company;
ALTER DATABASE db_Company SET ENABLE_BROKER;
[Code]....
I have a dropdown list placed in Update Panel the issue is that when i am trying to make selection from the dropdownlist i am not able to select the items under it(i.e. after clicking on the dropdownlist the items get displayed but when i move the mouse over it the dropdownlist gets closed).
This issue is observed in Fire Fox only (works fine in IE and Google Chrome).
Is it correct to implement my caching object like this in my controller :
[code]....
And I Use it like this :
[code]....
