Hi ,
I think this solution is not very well, it is hard to get the cookie's
session id.
I still think my original suggestion of using delsession.aspx to delete the
session variables more suitable.
In your page's client unload event, you should use window.showModalDialog()
to open the delsession.aspx.
In this page, you can handle the server side load event and del some
session variables. Then use RegisterClientScriptBlock to write the
"window.close" method to the client side. letting the page close itself.
And if you click link to navigate to another page, the client unload event
will also fire. So the session variables will also be deleted.
Btw: the page opened by window.open() will pop up a comfirm dialog, so I
suggest you use window.showModalDialog().
I have tried this logic, the delsession.aspx page will open and closed
almost at once, so the user will not notice of this page.
Hope this helps,
Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! -
www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.
--------------------
| Content-Class: urn:content-classes:message
| From: =?iso-8859-1?Q?Heidi_Hund=E5la?=
<
[email protected]>
| Sender: =?iso-8859-1?Q?Heidi_Hund=E5la?=
<
[email protected]>
| References: <#
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<
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<#
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<
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<
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<
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<
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<
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<
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<
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| Subject: Re: Page_Unload event fires to early
| Date: Fri, 7 Nov 2003 01:11:43 -0800
| Lines: 431
| Message-ID: <
[email protected]>
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| Path: cpmsftngxa06.phx.gbl
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| NNTP-Posting-Host: TK2MSFTNGXA11 10.40.1.163
| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
|
| Hi
| When I debugged, the page is submitted to the server
| because of the unload event and the script which submits,
| but maybe there is just a misunderstanding between us
| regarding what is actually done.
| Anyway, your suggestion on
| >2) ..you can use server side link button..
| That is what I am trying to avoid, since the menu-
| structure already is made in the "div"-way, and the rest
| of the pages relate to it.
| >1) If you close the IE page, open another IE page and
| >visit the server. Then you can check the cookie's session
| >id(it will differ).
| I don't quite understand, close the page ?
| -H
| >-----Original Message-----
| >
| >Hi ,
| >
| >I have done some research for you. I find that there is
| some problem before
| >your issue.
| >I find that the onunload client script event can not
| submit form to a page.
| >I think when the client onunload event fires, the form
| has been destroyed,
| >so the form can not be submited. Code like this:
| ><script language="javascript">
| > function notifythepage()
| > {
| > alert("method called!");
| > document.Form1.submit();
| > }
| ><body onunload="notifythepage()">
| ></script>
| ><form name="Form1" method="post" action="delsession.aspx">
| ></form>
| ></body>
| >
| >When you close the page, the alert("method called!");
| will be called which
| >means the method is called while the onunload event.
| >But the delsession.aspx did not get called. which means
| the Form1 did not
| >submit to the delsession.aspx.
| >
| >So I am thinking of another way of workaround.
| >1. If you close the IE page, open another IE page and
| visit the server.
| >Then you can check the cookie's session id(it will
| differ). So you can
| >remove some session variables.
| >2. If you use link navigate to another page, you can use
| server side link
| >button, and it will notify the server, then you can get
| the notify and
| >remove some session variables.
| >
| >If you have anything unclear, please feel free to let me
| know.
| >
| >Best regards,
| >Jeffrey Tan
| >Microsoft Online Partner Support
| >Get Secure! -
www.microsoft.com/security
| >This posting is provided "as is" with no warranties and
| confers no rights.
| >
| >--------------------
| >| Content-Class: urn:content-classes:message
| >| From: =?iso-8859-1?Q?Heidi_Hund=E5la?=
| ><
[email protected]>
| >| Sender: =?iso-8859-1?Q?Heidi_Hund=E5la?=
| ><
[email protected]>
| >| References: <#
[email protected]>
| ><#
[email protected]>
| ><#
[email protected]>
| ><
[email protected]>
| ><#
[email protected]>
| ><
[email protected]>
| ><
[email protected]>
| ><
[email protected]>
| ><
[email protected]>
| ><
[email protected]>
| >| Subject: Re: Page_Unload event fires to early
| >| Date: Fri, 31 Oct 2003 01:56:51 -0800
| >| Lines: 298
| >| Message-ID: <
[email protected]>
| >| MIME-Version: 1.0
| >| Content-Type: text/plain;
| >| charset="iso-8859-1"
| >| Content-Transfer-Encoding: quoted-printable
| >| X-Newsreader: Microsoft CDO for Windows 2000
| >| X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4910.0300
| >| Thread-Index: AcOflU5lVhkMS6U7QaaVl6R6SJIhOQ==
| >| Newsgroups: microsoft.public.dotnet.framework.aspnet
| >| Path: cpmsftngxa06.phx.gbl
| >| Xref: cpmsftngxa06.phx.gbl
| microsoft.public.dotnet.framework.aspnet:187752
| >| NNTP-Posting-Host: TK2MSFTNGXA08 10.40.1.160
| >| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| >|
| >| I'll try to explain more accurately. The Wep App has a
| >| menu which is written in a div-tag, like
| >| <div>
| >| <a href="
http://myurl/newPage.aspx">New Page</a>
| >| </div>
| >| When you use this menu in order to go from the current
| >| page to New Page, the unload event is fired. The unload
| >| event posts to the server, hence the menu-choice isn't
| >| happening. Current page stays, no New Page.
| >| See ?
| >| There are different Session variables to clean up
| >| depending on each page, hence the clean is not easily
| >| generalized, and posting to a delsesssion.aspx between
| >| each page change seems to be too much just for a
| >| few "nulls".
| >| I just want a solution where the session cleanup is on
| the
| >| server side (aspx.cs) of each aspx-page with the
| >| possibility to navigate using the div-menu.
| >| Regards,
| >| Heidi
| >| >-----Original Message-----
| >| >
| >| >Hi ,
| >| >
| >| >Thanks for your feedback.
| >| >I do not quite understand what your "when the unload-
| >| event submits to the
| >| >server, the processing stops with this.The client
| change
| >| of page is not
| >| >valid anymore." means.
| >| >In my logic, I think you should handle in the client
| >| unload event,(Just as
| >| >you original find out), then submit to a
| delsesssion.aspx
| >| page. In the
| >| >delsesssion.aspx page's load event(server side), you
| can
| >| do your customized
| >| >session variables deletion. Finaly, delsesssion.aspx
| >| should use
| >| >RegisterClientScriptBlock method to generate a client
| >| script to client side
| >| >to close this page.
| >| >That is delsession.aspx's only purpose is delete the
| >| unwanted session
| >| >variables and close itself at once.
| >| >
| >| >If you still have anything unclear, please feel free
| to
| >| tell me.
| >| >
| >| >Best regards,
| >| >Jeffrey Tan
| >| >Microsoft Online Partner Support
| >| >Get Secure! -
www.microsoft.com/security
| >| >This posting is provided "as is" with no warranties
| and
| >| confers no rights.
| >| >
| >| >--------------------
| >| >| Content-Class: urn:content-classes:message
| >| >| From: =?iso-8859-1?Q?Heidi_Hund=E5la?=
| >| ><
[email protected]>
| >| >| Sender: =?iso-8859-1?Q?Heidi_Hund=E5la?=
| >| ><
[email protected]>
| >| >| References: <#
[email protected]>
| >| ><#
[email protected]>
| >| ><#
[email protected]>
| >| ><
[email protected]>
| >| ><#
[email protected]>
| >| ><
[email protected]>
| >| ><
[email protected]>
| >| ><
[email protected]>
| >| >| Subject: Re: Page_Unload event fires to early
| >| >| Date: Thu, 30 Oct 2003 07:18:23 -0800
| >| >| Lines: 191
| >| >| Message-ID: <
[email protected]>
| >| >| MIME-Version: 1.0
| >| >| Content-Type: text/plain;
| >| >| charset="iso-8859-1"
| >| >| Content-Transfer-Encoding: quoted-printable
| >| >| X-Newsreader: Microsoft CDO for Windows 2000
| >| >| X-MimeOLE: Produced By Microsoft MimeOLE
| V5.50.4910.0300
| >| >| Thread-Index: AcOe+Q92PAYlcl7KQwyi0C245QElHg==
| >| >| Newsgroups: microsoft.public.dotnet.framework.aspnet
| >| >| Path: cpmsftngxa06.phx.gbl
| >| >| Xref: cpmsftngxa06.phx.gbl
| >| microsoft.public.dotnet.framework.aspnet:187546
| >| >| NNTP-Posting-Host: TK2MSFTNGXA12 10.40.1.164
| >| >| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| >| >|
| >| >| No, it is not that simple after all.
| >| >| When you want to change page in the Web App, you use
| a
| >| >| menu to go to a new url, but when the unload-event
| >| >| submits to the server, the processing stops with
| this.
| >| >| The client change of page is not valid anymore.
| >| >| ....
| >| >| Any good advice ?
| >| >| -Heidi
| >| >| >-----Original Message-----
| >| >| >
| >| >| >I figured it out, so now I have a method:
| >| >| >
| >| >| >I have a hidden value in the form:
| >| >| ><input type="hidden" name="action" value="" />
| >| >| >
| >| >| >On body onunload, I submit,
| >| >| >Form1.action.value = 'TidySession';
| >| >| >Form1.submit();
| >| >| >
| >| >| >In Page_Load, I check the value:
| >| >| >if( Request.Form["action"] == "TidySession" ){
| >| >| >
| >| >| > //Tidy Session
| >| >| >
| >| >| >I guess this will work whenever leaving a page.
| >| >| >
| >| >| >-H
| >| >| >
| >| >| >
| >| >| >
| >| >| >>-----Original Message-----
| >| >| >>Hi !
| >| >| >>
| >| >| >>I haven't had time to try it out, but I am also
| not
| >| sure
| >| >| >>how to do it.
| >| >| >>Do you have an example on how to do this, how to
| >| >| >>submit a request to the server side from javascript
| >| >| >>using the unload-event ?
| >| >| >>
| >| >| >>
| >| >| >>Regards,
| >| >| >>Heidi
| >| >| >>
| >| >| >>>-----Original Message-----
| >| >| >>>
| >| >| >>>Hi Heidi,
| >| >| >>>
| >| >| >>>Does my suggestion resolve your problem?
| >| >| >>>If you still have anything unclear, please feel
| free
| >| to
| >| >| >>let me known.
| >| >| >>>
| >| >| >>>Best regards,
| >| >| >>>Jeffrey Tan
| >| >| >>>Microsoft Online Partner Support
| >| >| >>>Get Secure! -
www.microsoft.com/security
| >| >| >>>This posting is provided "as is" with no
| warranties
| >| and
| >| >| >>confers no rights.
| >| >| >>>
| >| >| >>>--------------------
| >| >| >>>| From: "Heidi Hundåla" <
[email protected]>
| >| >| >>>| References:
| >| <#
[email protected]>
| >| >| >>><#
[email protected]>
| >| >| >>><#
[email protected]>
| >| >| >>><
[email protected]>
| >| >| >>>| Subject: Re: Page_Unload event fires to early
| >| >| >>>| Date: Wed, 22 Oct 2003 15:21:13 +0200
| >| >| >>>| Lines: 71
| >| >| >>>| X-Priority: 3
| >| >| >>>| X-MSMail-Priority: Normal
| >| >| >>>| X-Newsreader: Microsoft Outlook Express
| >| 6.00.2800.1158
| >| >| >>>| X-MimeOLE: Produced By Microsoft MimeOLE
| >| >| >V6.00.2800.1165
| >| >| >>>| Message-ID:
| <#
[email protected]>
| >| >| >>>| Newsgroups:
| >| microsoft.public.dotnet.framework.aspnet
| >| >| >>>| NNTP-Posting-Host: 160.67.143.13
| >| >| >>>| Path: cpmsftngxa06.phx.gbl!TK2MSFTNGP08.phx.gbl!
| >| >| >>TK2MSFTNGP10.phx.gbl
| >| >| >>>| Xref: cpmsftngxa06.phx.gbl
| >| >| >>microsoft.public.dotnet.framework.aspnet:185762
| >| >| >>>| X-Tomcat-NG:
| >| microsoft.public.dotnet.framework.aspnet
| >| >| >>>|
| >| >| >>>| If you read what I wrote, I don't need any
| clean
| >| up
| >| >| at
| >| >| >>Session End, but
| >| >| >>>| at "Page End" within the same session, long
| before
| >| >| >>Session End.
| >| >| >>>|
| >| >| >>>| In other words, there should've been a
| Page_Leave-
| >| >| >>event. In lack of this,
| >| >| >>>| what is the
| >| >| >>>| best way to handle clean up in Session when
| going
| >| >| from
| >| >| >>one page to another
| >| >| >>>| in a
| >| >| >>>| Web App, whithin a Session ?
| >| >| >>>|
| >| >| >>>| -H
| >| >| >>>|
| >| >| message
| >| >| >>>| | >| >| >>>| > How about session end event in the
| >| global.asax....
| >| >| >>>| >
| in
| >| >| >>message
| >| >| >>>| > | (e-mail address removed)...
| >| >| >>>| > > But I wonder what is the best way to clean
| up
| >| >| >>Session when going to
| >| >| >>>one
| >| >| >>>| > page
| >| >| >>>| > > from another ?
| >| >| >>>| > >
| >| >| >>>| > > Session is only taken care of by the
| garbage
| >| >| >>collector when the
| >| >| >>>Session
| >| >| >>>| > > itself is dead, hence
| >| >| >>>| > > the session can carry a lot of unecesarry
| >| stuff
| >| >| >for
| >| >| >>a long time, and
| >| >| >>>| this
| >| >| >>>| > is
| >| >| >>>| > > causing the web app to be reset
| >| >| >>>| > > when the whole application is using to much
| >| >| memory.
| >| >| >>>| > >
| >| >| >>>| > > -H
| >| >| >>>| > >
| >| >| >>>| > > "Rajesh.V" <
[email protected]>
| wrote
| >| in
| >| >| >>message
| >| >| >>>| > > | (e-mail address removed)...
| >| >| >>>| > > > Ya me too, being new wanted to do a lot
| of
| >| >| >>cleanup, but found that
| >| >| >>>| > > sometimes
| >| >| >>>| > > > the garbage collector had paid a visit
| >| before
| >| >| >>unload fires.
| >| >| >>>| > > >
| >| >| >>>| > > > "Heidi Hundåla" <
[email protected]>
| wrote
| >| in
| >| >| >>message
| >| >| >>>| > > > | >| (e-mail address removed)...
| >| >| >>>| > > > > Hi !
| >| >| >>>| > > > >
| >| >| >>>| > > > > I have a Wep App in C#.
| >| >| >>>| > > > > Page_Unload fires after Page_Load, and
| >| >| >>>| > > > > it seems totally unreasonable when you
| >| want
| >| >| to
| >| >| >>use this event when
| >| >| >>>| you
| >| >| >>>| > > > > _leave_ the page.
| >| >| >>>| > > > >
| >| >| >>>| > > > > In my project we wanted to use the
| >| >| >Page_Unload -
| >| >| >> event to clean up
| >| >| >>>| the
| >| >| >>>| > > > > Session variables, but
| >| >| >>>| > > > > when it turns out that it fires before
| the
| >| >| >end,
| >| >| >>it screws up the
| >| >| >>>| code,
| >| >| >>>| > > and
| >| >| >>>| > > > > we get NullPointerExceptions.
| >| >| >>>| > > > >
| >| >| >>>| > > > > Anyone ?
| >| >| >>>| > > > >
| >| >| >>>| > > > > Regards,
| >| >| >>>| > > > > Heidi
| >| >| >>>| > > > >
| >| >| >>>| > > > > (e-mail address removed)
| >| >| >>>| > > > >
| >| >| >>>| > > > >
| >| >| >>>| > > >
| >| >| >>>| > > >
| >| >| >>>| > >
| >| >| >>>| > >
| >| >| >>>| >
| >| >| >>>| >
| >| >| >>>|
| >| >| >>>|
| >| >| >>>|
| >| >| >>>
| >| >| >>>.
| >| >| >>>
| >| >| >>.
| >| >| >>
| >| >| >.
| >| >| >
| >| >|
| >| >
| >| >.
| >| >
| >|
| >
| >.
| >
|
