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lock-out "Back" button

asp.net 1.1
ie 6

how to lock-out the user from clicking the browser "Back" button ?

Nov 19 '05 #1
11 2696
Not possible.

"John A Grandy" <johnagrandy-at-yahoo-dot-com> wrote in message
news:%2******** ********@TK2MSF TNGP12.phx.gbl. ..
asp.net 1.1
ie 6

how to lock-out the user from clicking the browser "Back" button ?

Nov 19 '05 #2
Scott M. < No****@NoSpam.c om > wrote:
Not possible.
"John A Grandy" <johnagrandy-at-yahoo-dot-com> wrote in message
news:%2******** ********@TK2MSF TNGP12.phx.gbl. ..
asp.net 1.1
ie 6
how to lock-out the user from clicking the browser "Back" button ?


It is possible, with javascript, but you cannot depend on it working (user
can disable js, may not have it, etc.). Google "disable back javascript"
Nov 19 '05 #3
It is NOT possible with ASP.NET and (as you point out) it is not reliable in
client-side code either.

"Jeff Evans" <jwevans1@you_e ye_you_see.edu> wrote in message
news:Or******** ******@tk2msftn gp13.phx.gbl...
Scott M. < No****@NoSpam.c om > wrote:
Not possible.
"John A Grandy" <johnagrandy-at-yahoo-dot-com> wrote in message
news:%2******** ********@TK2MSF TNGP12.phx.gbl. ..
asp.net 1.1
ie 6
how to lock-out the user from clicking the browser "Back" button ?


It is possible, with javascript, but you cannot depend on it working (user
can disable js, may not have it, etc.). Google "disable back javascript"

Nov 19 '05 #4
Its not possible to do that in asp.net. If your requirement is that user
shouldnt see the cached page by clicking back button, then check out this
faq
http://www.extremeexperts.com/Net/FA...ackButton.aspx

--
Saravana
http://dotnetjunkies.com/WebLog/saravana/
www.ExtremeExperts.com
"Scott M." <No****@NoSpam. com> wrote in message
news:u1******** ******@TK2MSFTN GP11.phx.gbl...
It is NOT possible with ASP.NET and (as you point out) it is not reliable in client-side code either.

"Jeff Evans" <jwevans1@you_e ye_you_see.edu> wrote in message
news:Or******** ******@tk2msftn gp13.phx.gbl...
Scott M. < No****@NoSpam.c om > wrote:
Not possible.
"John A Grandy" <johnagrandy-at-yahoo-dot-com> wrote in message
news:%2******** ********@TK2MSF TNGP12.phx.gbl. ..
asp.net 1.1
ie 6
how to lock-out the user from clicking the browser "Back" button ?


It is possible, with javascript, but you cannot depend on it working (user can disable js, may not have it, etc.). Google "disable back javascript"


Nov 19 '05 #5
Yeah u could also use javascript..but that WILL not allow the user to
click the back button on the BROWSER!
But if its NOT to see the cached page then Saravana's solution should
WORK
Patrick

*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it!

Nov 19 '05 #6
Hi Saravana.

In regards to "disabling the IE Back button" in my ASP.NET application ...

My objective is to prevent the user from seeing any of the pages previously
visited in my application -- so removing them from the cache sounds like the
correct solution.

I assume with your solution, the "Back" button stays visible on the browser?
What happens if the user clicks it? I'd prefer that the current page remain
shown.
Response.Buffer = True
Response.Expire sAbsolute = Now().Subtract( New TimeSpan(1, 0, 0, 0))
Response.Expire s = 0
Response.CacheC ontrol = "no-cache"

Where to locate the above code? Does it have to be placed in every page?
Such as in the OnPreRender event ?

Or is there a way to implement this technique globally for my entire asp.net
application ?

Thanks.
John.
--------------

you wrote:

"Saravana" <sa******@sct.c o.inwrote in message
news:Ml******** *********@news. cpqcorp.net...
Its not possible to do that in asp.net. If your requirement is that user
shouldnt see the cached page by clicking back button, then check out this
faq
http://www.extremeexperts.com/Net/FA...ackButton.aspx
--
http://dotnetjunkies.com/WebLog/saravana/
www.ExtremeExperts.com

"Saravana" <sa******@sct.c o.in> wrote in message
news:Ml******** *********@news. cpqcorp.net...
Its not possible to do that in asp.net. If your requirement is that user
shouldnt see the cached page by clicking back button, then check out this
faq
http://www.extremeexperts.com/Net/FA...ackButton.aspx

--
Saravana
http://dotnetjunkies.com/WebLog/saravana/
www.ExtremeExperts.com
"Scott M." <No****@NoSpam. com> wrote in message
news:u1******** ******@TK2MSFTN GP11.phx.gbl...
It is NOT possible with ASP.NET and (as you point out) it is not reliable

in
client-side code either.

"Jeff Evans" <jwevans1@you_e ye_you_see.edu> wrote in message
news:Or******** ******@tk2msftn gp13.phx.gbl...
> Scott M. < No****@NoSpam.c om > wrote:
>> Not possible.
>> "John A Grandy" <johnagrandy-at-yahoo-dot-com> wrote in message
>> news:%2******** ********@TK2MSF TNGP12.phx.gbl. ..
>>> asp.net 1.1
>>> ie 6
>>> how to lock-out the user from clicking the browser "Back" button ?
>
> It is possible, with javascript, but you cannot depend on it working (user > can disable js, may not have it, etc.). Google "disable back javascript" >



Nov 19 '05 #7
Try putting it in your code Behind..
Hope that helps..
Patrik

*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it!
Nov 19 '05 #8
yes, i know that it belongs in the "code-behind" (more properly the class
associated with the web-form) .... but i am attempting to locate the code in
a single location and have it apply to all pages in my application
"Patrick Olurotimi Ige" <pa*********@cr azyjohns.com.au > wrote in message
news:e9******** ******@TK2MSFTN GP09.phx.gbl...
Try putting it in your code Behind..
Hope that helps..
Patrik

*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it!

Nov 19 '05 #9
Back button will be visible only if go with this approach. Advantage in this
method is, you can restrict the user from viewing cached page. You need to
place the code in each page. If you want you write handler for this stuff,
so you no need to put it in every page.

--
Saravana
http://dotnetjunkies.com/WebLog/saravana/
www.ExtremeExperts.com
"John A Grandy" <johnagrandy-at-yahoo-dot-com> wrote in message
news:u$******** ******@tk2msftn gp13.phx.gbl...
Hi Saravana.

In regards to "disabling the IE Back button" in my ASP.NET application ...

My objective is to prevent the user from seeing any of the pages previously visited in my application -- so removing them from the cache sounds like the correct solution.

I assume with your solution, the "Back" button stays visible on the browser? What happens if the user clicks it? I'd prefer that the current page remain shown.
Response.Buffer = True
Response.Expire sAbsolute = Now().Subtract( New TimeSpan(1, 0, 0, 0))
Response.Expire s = 0
Response.CacheC ontrol = "no-cache"

Where to locate the above code? Does it have to be placed in every page?
Such as in the OnPreRender event ?

Or is there a way to implement this technique globally for my entire asp.net application ?

Thanks.
John.
--------------

you wrote:

"Saravana" <sa******@sct.c o.inwrote in message
news:Ml******** *********@news. cpqcorp.net...
Its not possible to do that in asp.net. If your requirement is that user
shouldnt see the cached page by clicking back button, then check out this
faq
http://www.extremeexperts.com/Net/FA...ackButton.aspx
--
http://dotnetjunkies.com/WebLog/saravana/
www.ExtremeExperts.com

"Saravana" <sa******@sct.c o.in> wrote in message
news:Ml******** *********@news. cpqcorp.net...
Its not possible to do that in asp.net. If your requirement is that user
shouldnt see the cached page by clicking back button, then check out this faq
http://www.extremeexperts.com/Net/FA...ackButton.aspx

--
Saravana
http://dotnetjunkies.com/WebLog/saravana/
www.ExtremeExperts.com
"Scott M." <No****@NoSpam. com> wrote in message
news:u1******** ******@TK2MSFTN GP11.phx.gbl...
It is NOT possible with ASP.NET and (as you point out) it is not
reliable in
client-side code either.

"Jeff Evans" <jwevans1@you_e ye_you_see.edu> wrote in message
news:Or******** ******@tk2msftn gp13.phx.gbl...
> Scott M. < No****@NoSpam.c om > wrote:
>> Not possible.
>> "John A Grandy" <johnagrandy-at-yahoo-dot-com> wrote in message
>> news:%2******** ********@TK2MSF TNGP12.phx.gbl. ..
>>> asp.net 1.1
>>> ie 6
>>> how to lock-out the user from clicking the browser "Back" button ?
>
> It is possible, with javascript, but you cannot depend on it working

(user
> can disable js, may not have it, etc.). Google "disable back

javascript"
>



Nov 19 '05 #10

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