Prevent Caching
If you look around on the web for advice on cache-control and using 'Option Explicit' you get a paradox. Both features are supposed to be the first piece of ASP code on the page. Well they can't BOTH be first can they?
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To Prevent Client Side Web Page Caching
I wish to avoid caching asp pages at the user end . Currently I have declared Response.Expires=0 at the top of my asp page. I have also used the following meta tags
to prevent client side caching:
<meta HTTP-EQUI="PRAGMA" CONTENT="NO-CACHE"></meta>
but still the pages are cached at the client side.
Prevent Printing
Is there a way to prevent the user from printing a page? I have a form that I would like to make it impossible or very difficult to print out.
View Replies View RelatedPrevent Error
I am a webdesigner.We have recently taken over a site created in ASP. The site remains on the original server, but my company does the updates on the site.I do not touch the ASP at all, as I not familiar with it other then I know ASP automatically becomes html when you view it from the browser and u can save the file from there.Anyways, I edit the pages as required, new text, new photos, new links, and create new pages (any new pages I create in html if not tied to the database). I save the pages with a .asp extension and upload. This does not seem to mess anything up.
The person who hosts the site, is upset that someone else is editing the site, so he's really not easy to work with. Anyways, after uploading files, everything works fine, and then a day later, all of a sudden, any .ASP pgs you click on give the following error or similar pasted below. What I'd like to know is if these errors are because of me..and if so, how do I prevent it.
Prevent Excel
I've got an intranet application that presents a list of files in sort of a 'central repository' web page. Each file is an href in the form
<a href=file://server/share/path/filename.ext>.
When the user clicks on an excel file,it is opening within the browser,which unforntuntely confuses the heck out of them because the usual Print/Print Preview menu options are not available. I would like the user to be presented with the typical Open/Save dialog when clicking on this link.
Is there any way that I can force the browser to do the same thing as 'Save Target As', without modifying the user mime configuration in IE (another common suggestion), or hosting the files on the web server?
Prevent The Duplicate Value
i have a form by asp and database by MS access.so i want to prevent the duplicate value in empID because when i add a new employee with the same id ASP gives me this error.
Error Type:
Microsoft OLE DB Provider for ODBC Drivers (0x80040E14)
[Microsoft][ODBC Microsoft Access Driver] The changes you requested to the table were not successful because they would create duplicate values in the index, primary key, or relationship. Change the data in the field or fields that contain duplicate data, remove the index, or redefine the index to permit duplicate entries and try again.
/employee/admin/addemp1.asp, line 48
so i want the employee to get a message like this empID already exist or somthing like this.
Prevent Resizing Of <TD>
I need a help to prevent resizing of <TDwhen i post inside this <TDhtml text of other web page.
View Replies View RelatedPrevent Flooding
What would the logic be to prevent flooding? On my forum they have a timer, so if the user has submitted a post, it starts the timer, and after 30 seconds it will allow him to post again.
When the user comments, record the date in a session (StartTime) and when the user tries again, DateDiff in seconds to see if the Now() time is more than 30 seconds after the StartTime. If it is, clear the session.
Prevent Same Session Var
i tried to open Window B using window.open() from Main Window. And from Window B i open another new Window C which fires up session("topic")="something"
So i tried to open another window link from Main Window, and the session("topic") value is still the same. how can i overcome it? Beacuse im using same session("Topic") var for all the sql query statement. so if 1 window is opening and another different session window start, it will overwrite it each other.
Prevent Posting
How can I prevent posting of a form from any other site but the site the form lives on?
View Replies View RelatedPrevent Any Type Of Error...
How can you prevent the database error from displaying on
screen? Can you redirect users to a more friendly error
screen that is custom created. Using ASP/SQL Server. For
instance, if the database cannot be found, instead of
displaying,
Microsoft OLE DB Provider for SQL Server error '80004005'
[DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not
exist or access
denied.
/myConn.asp, line 7
Can you make it to where you could display something like
this:
"I'm sorry, a database error has occured, please try your
request later, click hyperlink for list of possibilities."
Prevent File Download
Currently i am doing a file management project where user are able to create folder and upload files to it. The file ownner would be able to set permission (from database linking to the file path) if a user able to download it or not.
*each file info will be stored into a table e.g. fileid, filename, path, access.
Now i am facing a problem where if a user does not have permission to click on the link to download, the user can guess the path and the file name and directly type the path on the address bar to download the file.
Prevent Resubmitting The Same Form More Than Once
I have a form which when submitted will validate the fields and then add the record to a database. If a mandatory field is not completed, there is an instruction to return to the form and complete the mandatory fields and then submit.
The problem I have is preventing the user from resubmitting the same form once it has been added to the database. I cannot deactivate the submit button, because if they need to return to complete mandatory fields, the submit button is still required.
I have read the article "Programming Forms To Submit Only Once" from 15seconds.com and this looks exactly what I need......
To prevent the same form from being submitted more than once we must:
Initialize the data structures.
Create a mechanism to give each form a unique identification.
Find a way to store a list of already submitted forms.
When processing a form submit, we just have to check if its ID is on the list.
I am having problems when adding the recommended code to my form and my process form pages.
Prevent Unwanted Comma
This may not be possible on the server side, so apologies if this is the
wrong group for this post.My form consists of an unknown number of pairs of text boxes. They are named textbox_a and textbox_b. I then split the comma separated list
that gets posted:
textbox_a = split(Request.Form("textbox_a"),",")
for i = ubound(textbox_a)
...insert into db
then do the same for textbox_b
If anyone puts a comma into one of the text boxes, this will result in
unmatched pairs. How can I deal with the comma, or prevent it?
Prevent Image Saving
Well i am developing an application in which few pages display just images ... (*.jpg)
format ...
now what happens is that i dont want to allow the user to SAVE these images onto their
disks ... when a user RIGHT CLICKS on the images menu pops us which gives option SAVE
PICTURE AS ...
well so is there anyway i can prevent that ... i thought of following way ...
(1) If I can override the RIGHT CLICK event handler and replace it with my own custom code
in which i may just display a Messagebox say ... "you cannot save this picture" ...but the
problem is that i dont know how to override this event ...
i am using ASP with VBSCRIPT and i dont know anyother scripting language .... so plz help
someone as soon as possible ...
any other method is WELCOME but keep it in VBSCRIPT ...
Prevent Multiple Logins
I want to prevent multiple logins in my web application. For eg:If a user "userA" logs into the application,some other user with same userid "userA" should not be allowed to login as long as previously logged in "userA" is active.
Is there any solution? One method I thought was when user logs into application,
I set a flag in table.If user logs out of application from the logout button explicitly provided in application, I reset the flag for that userid.But if user closes the application from browser(close) , I am unable to find a way to reset a flag.
Prevent Resubmit After Logout
How to prevent resubmit after logout?After logout, I hit back button, then the browser ask whether I want to resend the data? How to prevent this?
View Replies View RelatedPrevent Displaying Chinese
due to my 'Language for non-Unicode Setting' in Regional Settings,my ASP page keeps outputing the date format as Chinese Simplified characters when issuing say, <%=Now()%>. In addition, my client script also interpret it as Chinese characters, which I don't want it to behave this way.
However, I can't remove my 'Chinese (PRC)' settings in control panel as I need it for other Chinese version software. Does anyone knows how can I display the date in my ASP page in normal English? I did try out the META tag Content Type and put in several charset to try out, but seems like it doesn't work at all.
Prevent The Forms From Clearing
I assume it has to do with cache control, but how do I prevent the form from clearing when a user hits the back button? The form I am referring to is my registration page. After the registration is submitted, they are taken to an error handling page. If an error comes up, they are required to hit the back button and correct the mistake.
It seems like for the most part it retains all of the information in the fields, but occasionally it clears it out. How can I prevent this?
Prevent Unauthorized Downloads
I have a file that SHOULD only be made accessable to registered users. They must login to get to the download page. The problem I have is that once a user logs in an gets to that page they can potentially share the web link to that file with anyone and that unregistered user can bypass logging in.
I was thinking something along the lines of download.com where when you click download, the actual files location only appears for a split second, pops up the download box, then it switches to another webaddress?
Prevent Image Download
I have a site which gives access to 2,000 Hi-Res photos for free. We noticed that people began to use programs like Offline Explorer and WebStripper to download our entire collection all at once. - This is a problem because it hogs our bandwidth, and we are scared that people are going to use our entire collection for their own financial gain, when we are providing it for free.
We actually have two web servers, one is the website where the user interface is located, the other is a server where we store all the image files (at an educational institution, unlimited storage). We link the images to the external server. Is there a way in ASP to limit access to the images by setting up a rule like so:
"Only allow access to these images if the referer is www.ourdomain.com" ? We would prefer not to use any 3rd party software.
Prevent Duplicate Submissions
I need help ASAP. I have a form where users can fill out the fields firstname, lastname, and emailaddress. When the user submits the form, I need ASP to call out to a SQL Server database to see if the firstname, lastname and emailaddress the user submitted already exists in the database.
If they all do exist, the user should not be allowed to submit the data but should be redirected to a page saying "sorry, you have already entered that information" or something to that effect.
Prevent Double Sign In
How can i prevent double sign in with same account?
View Replies View RelatedPrevent Button From Scrolling
how to prevent a button from scrolling i.e keep its absolute position same on the page.
View Replies View RelatedPrevent Repeating Records
Is there anything I can do in the Select Query statement?
View Replies View RelatedASP Caching
ASP Caching is not happening even i enable ASP disk
cache under websites
properties,Homedirectory,Configuration,cache options..
I have given the Full Control Permissions to IIS_WPG &
Administrator to that directory...
I am getting that cache options under
websites only not individual sites.Can i know the reason
for this
Web Caching
Just recently we have encountered a weird problem with our
webserver...running IIS 5 and W2000 SP4
When testing an ASP page, if you get an error of some sort in your browser,
when you go into the code and fix the problem, save the changes, when you
refresh the page, the error stays there, even though the code is correct.
The problem is not fixed until you rename the page, and the open it in your
browser to work fine??
XML Caching
We have a website that reads data from Oracle and creates an XML file. Then
the site uses that file to access the info faster. On IIS5 we have no
problems, but on IIS6 we seem to have some caching issuses. This deals with
the Worker Processes. By default, there is only 1 Worker Process that gets
recycled after 1700 minutes or so. The problem is, that we will select some
data from the screen, which opens up another window to update the info. We
walk through the update process and change some data and it updates the page
fine. We can even check the XML file and it is changed, but if you choose to
go back into that data, the dropdowns will reflect whatever was initially in
the XML not the changes. If I increase the number of Worker Processes and
shorten their recycle time, this doesn't seem to be a problem, but for every
request I am generating a 25M file on the server that eventually gets
recycled. I don't want to load up the memory with useless files, but I want
our application to reflect the correct data. I really need to do this without
affecting any other possible web apps that may be on the box.
SSI's Are Caching ...
Never had this problem before, but my SSI's in an ASP page are caching. I don't think ASP has anything to do with it mind you. I think it's a server issue (I've never really used this hosting company before).
Is there any way (ASP or otherwise) that anyone knows of stopping a web server caching your SSI's. It's VERY annoying!
SSL And ASP Caching
We have an IIS cluster running an ASP website. We installed the patch listed under Q239703 that allows IIS to recognize script updates and appriately not cache those ASP pages. However, since we made this change, any office documents that a user tries to download exhibit the problem listed in Q316431. We do not use any of the caching commands listed in this article (Pragma: no-cache OR
Cache-control: no-cache,max-age=0,must-revalidate). In fact we do not have anything set in the code at all with regards to caching, and the only this i can come up with is the change we made from Q239703, which is needed to stop IIS from caching ASP based pages
Caching
We are attempting to cache asp web pages in our isa server from the local county property appraiser web site to speed up access, with a 60 minute TTL (time to live).
This doesn't seem to be working - at least the pages aren't coming up any faster. Is there anything in asp that could be preventing the pages from being cached locally?
Caching
What is the best way to cache images, and stylesheets on an asp site? I currently use a .asp extension on all my pages because I use include statements to keep certain parts of my layout the same(menu, logo, footer). I have read that asp doesn't cache pages by default, and that they are processed everytime on the server. This can eat bandwidth up pretty fast.
There also seems to be a few ways to cache a page (response.expires, cache-control, public, using meta tags, and a few more).
Caching
I have a page were data can be filtered using up to 4 listboxes. Once
someone does a filter, those parameters are saved so when they come back
to the page on a subsequent visit, the listboxes are filled for them.
There is a slight performance issue if all listboxes are set to 'All'.
Can the Cache Object be used for data that is static but filtered? If
so, how? The data that is being filtered is updated once a month and I
am not using the .NET platform.