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A selection changes on asp page with 6 dependent list boxes, when back

Hello
I have 6 dependent list boxes on my ASP page:
 Faculty;
 Lecturer;
 Course;
 Course occurrence;
 Group;
 Week commencing date.
When faculty is selected, lists of lecturers and courses are
populated. When course is selected, lists of occurrences, groups and
dates are populated.
All data to populate list boxes come from a database on SQL server,
from separate recordsets. List boxes are populated on the client side
using functions generated in the source, when asp page is processed on
the server side. An example:
function populateLecture r_from_Faculty( Faculty) {
prodBox1 = document.getSea rch.selLecturer
clearBox(prodBo x1);
switch (Faculty) {

case 'ABT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Baxxr, V', '52');

addBoxItem(prod Box1, 'Coxxly, M', '293');

addBoxItem(prod Box1, 'Dxxn, T', '357');

break;

case 'BMP' :
addBoxItem(prod Box1, ' ', '*'); addBoxItem(prod Box1, 'Buxxll, N',
'4197');

addBoxItem(prod Box1, 'Caxxde, J', '2779');

addBoxItem(prod Box1, 'Vowxxs, C', '1279');

break;

case 'CHT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Bisxxp, E', '2763');

addBoxItem(prod Box1, 'Brxxey, D, '172');

break;

case 'CLT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Garxxng, M', '471');

addBoxItem(prod Box1, 'Waxxh, J', '1302');

break;

and so on.

It is of course a very long source, but it works.
When user selects everything, the selection uniquely identifies a
group of students. When user clicks the button Submit, another asp
page is activated showing room(s) occupied by this group on each day
of the selected week. It also works.
My problem: when user clicks the button Back of the browser to return
to the selection asp page, the selection disappears. All list boxes
return to the full initial lists of faculties, lecturers, courses and
so on and the first item of each list is shown rather then that one
that was selected.
Why does asp page changes, when user navigates back to it? How can I
prevent this change? I want my users to see the same data, when they
return to the page.
The browser is IE 5.5 on Windows 9x and 6.0. on Windows 2000. (Being a
large college, we have PCs in different stages of Windows update.) The
problem looks the same on both browsers.
Any help will be greatly appreciated.
Thank you.
Galina
Nov 18 '05 #1
8 2573
Do you mean that when a user chooses faculty for example, the page is posted
back to the server to get the values for lists of lectures and courses?
or Do you mean that all those values are taken from the database once and
client side script handles the case when the user makes his choices?
If you use the option of getting the data from the database at start and
then a client side script would handle the choices of the user, the page is
not posted back unless the submit button is clicked. In this case, when the
user presses the back button, the web browser would return to the first page
and the choices won't be saved. If this is actually your scenario and you
want the back button to return to the choices the user made, then you could
make the list boxes post back (set AutoPostBackBac k property to true) and
retrieve the data from the database in that event. This means that when a
user makes a choice in one of the listboxes, the request will be posted to
the server and the needed data is retrieved and returned to the client.
This way would make the loading of the page quicker in the first time, but
would need make more roundtrips between the server and the user's browser
when the user makes a selection from the list boxes.

regards
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

"Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
news:cc******** *************** ***@posting.goo gle.com...
Hello
I have 6 dependent list boxes on my ASP page:
 Faculty;
 Lecturer;
 Course;
 Course occurrence;
 Group;
 Week commencing date.
When faculty is selected, lists of lecturers and courses are
populated. When course is selected, lists of occurrences, groups and
dates are populated.
All data to populate list boxes come from a database on SQL server,
from separate recordsets. List boxes are populated on the client side
using functions generated in the source, when asp page is processed on
the server side. An example:
function populateLecture r_from_Faculty( Faculty) {
prodBox1 = document.getSea rch.selLecturer
clearBox(prodBo x1);
switch (Faculty) {

case 'ABT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Baxxr, V', '52');

addBoxItem(prod Box1, 'Coxxly, M', '293');

addBoxItem(prod Box1, 'Dxxn, T', '357');

break;

case 'BMP' :
addBoxItem(prod Box1, ' ', '*'); addBoxItem(prod Box1, 'Buxxll, N',
'4197');

addBoxItem(prod Box1, 'Caxxde, J', '2779');

addBoxItem(prod Box1, 'Vowxxs, C', '1279');

break;

case 'CHT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Bisxxp, E', '2763');

addBoxItem(prod Box1, 'Brxxey, D, '172');

break;

case 'CLT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Garxxng, M', '471');

addBoxItem(prod Box1, 'Waxxh, J', '1302');

break;

and so on.

It is of course a very long source, but it works.
When user selects everything, the selection uniquely identifies a
group of students. When user clicks the button Submit, another asp
page is activated showing room(s) occupied by this group on each day
of the selected week. It also works.
My problem: when user clicks the button Back of the browser to return
to the selection asp page, the selection disappears. All list boxes
return to the full initial lists of faculties, lecturers, courses and
so on and the first item of each list is shown rather then that one
that was selected.
Why does asp page changes, when user navigates back to it? How can I
prevent this change? I want my users to see the same data, when they
return to the page.
The browser is IE 5.5 on Windows 9x and 6.0. on Windows 2000. (Being a
large college, we have PCs in different stages of Windows update.) The
problem looks the same on both browsers.
Any help will be greatly appreciated.
Thank you.
Galina

Nov 18 '05 #2
Mohamed
Thank you very much for your answer.

I have set AutoPostBackBac k property to true, I hope, correctly:
<select name="selFacult y" AUTOPOSTBACK = TRUE
onChange="popul ateLecturer_fro m_Faculty(this. options[this.selectedIn dex].value),
populateCourse_ from_Faculty(th is.options[this.selectedIn dex].value);">

Would it be possible for you to point me in a direction of a code,
which retrieves the data from the database, when selected item is auto
posted? It is my very first asp page...
Galina

"Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in message news:<#n******* *******@TK2MSFT NGP11.phx.gbl>. ..
Do you mean that when a user chooses faculty for example, the page is posted
back to the server to get the values for lists of lectures and courses?
or Do you mean that all those values are taken from the database once and
client side script handles the case when the user makes his choices?
If you use the option of getting the data from the database at start and
then a client side script would handle the choices of the user, the page is
not posted back unless the submit button is clicked. In this case, when the
user presses the back button, the web browser would return to the first page
and the choices won't be saved. If this is actually your scenario and you
want the back button to return to the choices the user made, then you could
make the list boxes post back (set AutoPostBackBac k property to true) and
retrieve the data from the database in that event. This means that when a
user makes a choice in one of the listboxes, the request will be posted to
the server and the needed data is retrieved and returned to the client.
This way would make the loading of the page quicker in the first time, but
would need make more roundtrips between the server and the user's browser
when the user makes a selection from the list boxes.

regards
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

"Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
news:cc******** *************** ***@posting.goo gle.com...
Hello
I have 6 dependent list boxes on my ASP page:
 Faculty;
 Lecturer;
 Course;
 Course occurrence;
 Group;
 Week commencing date.
When faculty is selected, lists of lecturers and courses are
populated. When course is selected, lists of occurrences, groups and
dates are populated.
All data to populate list boxes come from a database on SQL server,
from separate recordsets. List boxes are populated on the client side
using functions generated in the source, when asp page is processed on
the server side. An example:
function populateLecture r_from_Faculty( Faculty) {
prodBox1 = document.getSea rch.selLecturer
clearBox(prodBo x1);
switch (Faculty) {

case 'ABT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Baxxr, V', '52');

addBoxItem(prod Box1, 'Coxxly, M', '293');

addBoxItem(prod Box1, 'Dxxn, T', '357');

break;

case 'BMP' :
addBoxItem(prod Box1, ' ', '*'); addBoxItem(prod Box1, 'Buxxll, N',
'4197');

addBoxItem(prod Box1, 'Caxxde, J', '2779');

addBoxItem(prod Box1, 'Vowxxs, C', '1279');

break;

case 'CHT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Bisxxp, E', '2763');

addBoxItem(prod Box1, 'Brxxey, D, '172');

break;

case 'CLT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Garxxng, M', '471');

addBoxItem(prod Box1, 'Waxxh, J', '1302');

break;

and so on.

It is of course a very long source, but it works.
When user selects everything, the selection uniquely identifies a
group of students. When user clicks the button Submit, another asp
page is activated showing room(s) occupied by this group on each day
of the selected week. It also works.
My problem: when user clicks the button Back of the browser to return
to the selection asp page, the selection disappears. All list boxes
return to the full initial lists of faculties, lecturers, courses and
so on and the first item of each list is shown rather then that one
that was selected.
Why does asp page changes, when user navigates back to it? How can I
prevent this change? I want my users to see the same data, when they
return to the page.
The browser is IE 5.5 on Windows 9x and 6.0. on Windows 2000. (Being a
large college, we have PCs in different stages of Windows update.) The
problem looks the same on both browsers.
Any help will be greatly appreciated.
Thank you.
Galina

Nov 18 '05 #3
Are you using ASP or ASP.net?
If you are using ASP, then there is no AutoPostback property. In this case,
you should make each of the listboxes submit values to an asp page (could be
the same page) which get the values from the database (the usual way you
did before).

I see from your code that you are using "select" which is an HTML control,
so it's better that you use the previous strategy in all cases rather than
using the AutoPostBack Property.

In general the old code that you used before to connect to the database
should suffice your need.
A good ASP site that contains some tutorials is:
http://www.4guysfromrolla.com

Regards
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

"Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
news:cc******** *************** ***@posting.goo gle.com...
Mohamed
Thank you very much for your answer.

I have set AutoPostBackBac k property to true, I hope, correctly:
<select name="selFacult y" AUTOPOSTBACK = TRUE
onChange="popul ateLecturer_fro m_Faculty(this. options[this.selectedIn dex].val
ue), populateCourse_ from_Faculty(th is.options[this.selectedIn dex].value);">

Would it be possible for you to point me in a direction of a code,
which retrieves the data from the database, when selected item is auto
posted? It is my very first asp page...
Galina

"Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in

message news:<#n******* *******@TK2MSFT NGP11.phx.gbl>. ..
Do you mean that when a user chooses faculty for example, the page is posted back to the server to get the values for lists of lectures and courses?
or Do you mean that all those values are taken from the database once and client side script handles the case when the user makes his choices?
If you use the option of getting the data from the database at start and
then a client side script would handle the choices of the user, the page is not posted back unless the submit button is clicked. In this case, when the user presses the back button, the web browser would return to the first page and the choices won't be saved. If this is actually your scenario and you want the back button to return to the choices the user made, then you could make the list boxes post back (set AutoPostBackBac k property to true) and retrieve the data from the database in that event. This means that when a user makes a choice in one of the listboxes, the request will be posted to the server and the needed data is retrieved and returned to the client.
This way would make the loading of the page quicker in the first time, but would need make more roundtrips between the server and the user's browser when the user makes a selection from the list boxes.

regards
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

"Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
news:cc******** *************** ***@posting.goo gle.com...
Hello
I have 6 dependent list boxes on my ASP page:
 Faculty;
 Lecturer;
 Course;
 Course occurrence;
 Group;
 Week commencing date.
When faculty is selected, lists of lecturers and courses are
populated. When course is selected, lists of occurrences, groups and
dates are populated.
All data to populate list boxes come from a database on SQL server,
from separate recordsets. List boxes are populated on the client side
using functions generated in the source, when asp page is processed on
the server side. An example:
function populateLecture r_from_Faculty( Faculty) {
prodBox1 = document.getSea rch.selLecturer
clearBox(prodBo x1);
switch (Faculty) {

case 'ABT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Baxxr, V', '52');

addBoxItem(prod Box1, 'Coxxly, M', '293');

addBoxItem(prod Box1, 'Dxxn, T', '357');

break;

case 'BMP' :
addBoxItem(prod Box1, ' ', '*'); addBoxItem(prod Box1, 'Buxxll, N',
'4197');

addBoxItem(prod Box1, 'Caxxde, J', '2779');

addBoxItem(prod Box1, 'Vowxxs, C', '1279');

break;

case 'CHT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Bisxxp, E', '2763');

addBoxItem(prod Box1, 'Brxxey, D, '172');

break;

case 'CLT' :
addBoxItem(prod Box1, ' ', '*');

addBoxItem(prod Box1, 'Garxxng, M', '471');

addBoxItem(prod Box1, 'Waxxh, J', '1302');

break;

and so on.

It is of course a very long source, but it works.
When user selects everything, the selection uniquely identifies a
group of students. When user clicks the button Submit, another asp
page is activated showing room(s) occupied by this group on each day
of the selected week. It also works.
My problem: when user clicks the button Back of the browser to return
to the selection asp page, the selection disappears. All list boxes
return to the full initial lists of faculties, lecturers, courses and
so on and the first item of each list is shown rather then that one
that was selected.
Why does asp page changes, when user navigates back to it? How can I
prevent this change? I want my users to see the same data, when they
return to the page.
The browser is IE 5.5 on Windows 9x and 6.0. on Windows 2000. (Being a
large college, we have PCs in different stages of Windows update.) The
problem looks the same on both browsers.
Any help will be greatly appreciated.
Thank you.
Galina

Nov 18 '05 #4
Mohamed
Thank you for your help. I really appreciate it.
It is very interesting idea - to submit form to itself. A question:
with my 6 select boxes I'll submit the form to itself 5 times:
<form action=thesamep age.asp method=post>
Then, when something is selected in the very last box and user clicks
the button Submit, I need to pass information to another form. I am
sure it should be very simple, but I cannot find it, how to submit a
form to itself and, after certain event, to a different form?

4guysfromrolla site you recommend is very useful and very easy to
read.

Thank you once more.
Best Regards.
Galina

"Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in message news:<#u******* *******@TK2MSFT NGP11.phx.gbl>. ..
Are you using ASP or ASP.net?
If you are using ASP, then there is no AutoPostback property. In this case,
you should make each of the listboxes submit values to an asp page (could be
the same page) which get the values from the database (the usual way you
did before).

I see from your code that you are using "select" which is an HTML control,
so it's better that you use the previous strategy in all cases rather than
using the AutoPostBack Property.

In general the old code that you used before to connect to the database
should suffice your need.
A good ASP site that contains some tutorials is:
http://www.4guysfromrolla.com

Regards
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

"Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
news:cc******** *************** ***@posting.goo gle.com...
Mohamed
Thank you very much for your answer.

I have set AutoPostBackBac k property to true, I hope, correctly:
<select name="selFacult y" AUTOPOSTBACK = TRUE

onChange="popul ateLecturer_fro m_Faculty(this. options[this.selectedIn dex].val
ue),
populateCourse_ from_Faculty(th is.options[this.selectedIn dex].value);">

Would it be possible for you to point me in a direction of a code,
which retrieves the data from the database, when selected item is auto
posted? It is my very first asp page...
Galina

"Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in

message news:<#n******* *******@TK2MSFT NGP11.phx.gbl>. ..
Do you mean that when a user chooses faculty for example, the page is posted back to the server to get the values for lists of lectures and courses?
or Do you mean that all those values are taken from the database once and client side script handles the case when the user makes his choices?
If you use the option of getting the data from the database at start and
then a client side script would handle the choices of the user, the page is not posted back unless the submit button is clicked. In this case, when the user presses the back button, the web browser would return to the first page and the choices won't be saved. If this is actually your scenario and you want the back button to return to the choices the user made, then you could make the list boxes post back (set AutoPostBackBac k property to true) and retrieve the data from the database in that event. This means that when a user makes a choice in one of the listboxes, the request will be posted to the server and the needed data is retrieved and returned to the client.
This way would make the loading of the page quicker in the first time, but would need make more roundtrips between the server and the user's browser when the user makes a selection from the list boxes.

regards
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

"Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
news:cc******** *************** ***@posting.goo gle.com...
> Hello
> I have 6 dependent list boxes on my ASP page:
>  Faculty;
>  Lecturer;
>  Course;
>  Course occurrence;
>  Group;
>  Week commencing date.
> When faculty is selected, lists of lecturers and courses are
> populated. When course is selected, lists of occurrences, groups and
> dates are populated.
> All data to populate list boxes come from a database on SQL server,
> from separate recordsets. List boxes are populated on the client side
> using functions generated in the source, when asp page is processed on
> the server side. An example:
> function populateLecture r_from_Faculty( Faculty) {
> prodBox1 = document.getSea rch.selLecturer
> clearBox(prodBo x1);
> switch (Faculty) {
>
> case 'ABT' :
> addBoxItem(prod Box1, ' ', '*');
>
> addBoxItem(prod Box1, 'Baxxr, V', '52');
>
> addBoxItem(prod Box1, 'Coxxly, M', '293');
>
> addBoxItem(prod Box1, 'Dxxn, T', '357');
>
> break;
>
> case 'BMP' :
> addBoxItem(prod Box1, ' ', '*'); addBoxItem(prod Box1, 'Buxxll, N',
> '4197');
>
> addBoxItem(prod Box1, 'Caxxde, J', '2779');
>
> addBoxItem(prod Box1, 'Vowxxs, C', '1279');
>
> break;
>
> case 'CHT' :
> addBoxItem(prod Box1, ' ', '*');
>
> addBoxItem(prod Box1, 'Bisxxp, E', '2763');
>
> addBoxItem(prod Box1, 'Brxxey, D, '172');
>
> break;
>
> case 'CLT' :
> addBoxItem(prod Box1, ' ', '*');
>
> addBoxItem(prod Box1, 'Garxxng, M', '471');
>
> addBoxItem(prod Box1, 'Waxxh, J', '1302');
>
> break;
>
> and so on.
>
> It is of course a very long source, but it works.
> When user selects everything, the selection uniquely identifies a
> group of students. When user clicks the button Submit, another asp
> page is activated showing room(s) occupied by this group on each day
> of the selected week. It also works.
> My problem: when user clicks the button Back of the browser to return
> to the selection asp page, the selection disappears. All list boxes
> return to the full initial lists of faculties, lecturers, courses and
> so on and the first item of each list is shown rather then that one
> that was selected.
> Why does asp page changes, when user navigates back to it? How can I
> prevent this change? I want my users to see the same data, when they
> return to the page.
> The browser is IE 5.5 on Windows 9x and 6.0. on Windows 2000. (Being a
> large college, we have PCs in different stages of Windows update.) The
> problem looks the same on both browsers.
> Any help will be greatly appreciated.
> Thank you.
> Galina

Nov 18 '05 #5
Anytime :)

I have 3 different ways in mind to make what you want:
1. You could make the submit button a normal button (use type="button"
instead of type="submit") and make its onclick event calls a javascipt
function.
The javscript function should check the event and then set the action
proprty of the form to the needed asp page whether it's the same page or
another one(<FormID>.ac tion = "<WebPagePath>" ); after that the javascript
function should call the submit method on the form (<FormID>.submi t)

2. You could make the last select box in a different form and have a
separate submit button. This helps you make this new form have a different
action and go to a different page. (This might not be appealing).

3. Make all events post to the same page and put a server side script at the
very top of the page to check for the events that should send to other
pages. If you should send to another page, you could use response.redire ct
method (This solution is the least appealing because it posts back to the
same page again then redirects to the other page in case of that event which
is an overhead).

The best solution is the first one but it needs that you write some
javascript code (Very little though. About 5 or 6 lines of code only)

Regards
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

"Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
news:cc******** *************** ***@posting.goo gle.com...
Mohamed
Thank you for your help. I really appreciate it.
It is very interesting idea - to submit form to itself. A question:
with my 6 select boxes I'll submit the form to itself 5 times:
<form action=thesamep age.asp method=post>
Then, when something is selected in the very last box and user clicks
the button Submit, I need to pass information to another form. I am
sure it should be very simple, but I cannot find it, how to submit a
form to itself and, after certain event, to a different form?

4guysfromrolla site you recommend is very useful and very easy to
read.

Thank you once more.
Best Regards.
Galina

"Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in

message news:<#u******* *******@TK2MSFT NGP11.phx.gbl>. ..
Are you using ASP or ASP.net?
If you are using ASP, then there is no AutoPostback property. In this case, you should make each of the listboxes submit values to an asp page (could be the same page) which get the values from the database (the usual way you did before).

I see from your code that you are using "select" which is an HTML control, so it's better that you use the previous strategy in all cases rather than using the AutoPostBack Property.

In general the old code that you used before to connect to the database
should suffice your need.
A good ASP site that contains some tutorials is:
http://www.4guysfromrolla.com

Regards
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

"Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
news:cc******** *************** ***@posting.goo gle.com...
Mohamed
Thank you very much for your answer.

I have set AutoPostBackBac k property to true, I hope, correctly:
<select name="selFacult y" AUTOPOSTBACK = TRUE

onChange="popul ateLecturer_fro m_Faculty(this. options[this.selectedIn dex].val ue),
populateCourse_ from_Faculty(th is.options[this.selectedIn dex].value);">

Would it be possible for you to point me in a direction of a code,
which retrieves the data from the database, when selected item is auto
posted? It is my very first asp page...
Galina

"Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in

message news:<#n******* *******@TK2MSFT NGP11.phx.gbl>. ..
> Do you mean that when a user chooses faculty for example, the page is
posted
> back to the server to get the values for lists of lectures and
courses? > or Do you mean that all those values are taken from the database once and
> client side script handles the case when the user makes his choices?
>
>
> If you use the option of getting the data from the database at start
and > then a client side script would handle the choices of the user, the page is
> not posted back unless the submit button is clicked. In this case,
when the
> user presses the back button, the web browser would return to the
first page
> and the choices won't be saved. If this is actually your scenario
and you
> want the back button to return to the choices the user made, then
you could
> make the list boxes post back (set AutoPostBackBac k property to
true) and
> retrieve the data from the database in that event. This means that
when a
> user makes a choice in one of the listboxes, the request will be
posted to
> the server and the needed data is retrieved and returned to the
client. > This way would make the loading of the page quicker in the first time, but
> would need make more roundtrips between the server and the user's

browser
> when the user makes a selection from the list boxes.
>
> regards
> Mohamed El Ashmawy
> Microsoft GTSC Developer support for Middle East
>
> "Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
> news:cc******** *************** ***@posting.goo gle.com...
> > Hello
> > I have 6 dependent list boxes on my ASP page:
> >  Faculty;
> >  Lecturer;
> >  Course;
> >  Course occurrence;
> >  Group;
> >  Week commencing date.
> > When faculty is selected, lists of lecturers and courses are
> > populated. When course is selected, lists of occurrences, groups

and > > dates are populated.
> > All data to populate list boxes come from a database on SQL server, > > from separate recordsets. List boxes are populated on the client side > > using functions generated in the source, when asp page is processed on > > the server side. An example:
> > function populateLecture r_from_Faculty( Faculty) {
> > prodBox1 = document.getSea rch.selLecturer
> > clearBox(prodBo x1);
> > switch (Faculty) {
> >
> > case 'ABT' :
> > addBoxItem(prod Box1, ' ', '*');
> >
> > addBoxItem(prod Box1, 'Baxxr, V', '52');
> >
> > addBoxItem(prod Box1, 'Coxxly, M', '293');
> >
> > addBoxItem(prod Box1, 'Dxxn, T', '357');
> >
> > break;
> >
> > case 'BMP' :
> > addBoxItem(prod Box1, ' ', '*'); addBoxItem(prod Box1, 'Buxxll, N',
> > '4197');
> >
> > addBoxItem(prod Box1, 'Caxxde, J', '2779');
> >
> > addBoxItem(prod Box1, 'Vowxxs, C', '1279');
> >
> > break;
> >
> > case 'CHT' :
> > addBoxItem(prod Box1, ' ', '*');
> >
> > addBoxItem(prod Box1, 'Bisxxp, E', '2763');
> >
> > addBoxItem(prod Box1, 'Brxxey, D, '172');
> >
> > break;
> >
> > case 'CLT' :
> > addBoxItem(prod Box1, ' ', '*');
> >
> > addBoxItem(prod Box1, 'Garxxng, M', '471');
> >
> > addBoxItem(prod Box1, 'Waxxh, J', '1302');
> >
> > break;
> >
> > and so on.
> >
> > It is of course a very long source, but it works.
> > When user selects everything, the selection uniquely identifies a
> > group of students. When user clicks the button Submit, another asp
> > page is activated showing room(s) occupied by this group on each day > > of the selected week. It also works.
> > My problem: when user clicks the button Back of the browser to return > > to the selection asp page, the selection disappears. All list boxes > > return to the full initial lists of faculties, lecturers, courses and > > so on and the first item of each list is shown rather then that one > > that was selected.
> > Why does asp page changes, when user navigates back to it? How can I > > prevent this change? I want my users to see the same data, when they > > return to the page.
> > The browser is IE 5.5 on Windows 9x and 6.0. on Windows 2000. (Being a > > large college, we have PCs in different stages of Windows update.) The > > problem looks the same on both browsers.
> > Any help will be greatly appreciated.
> > Thank you.
> > Galina

Nov 18 '05 #6
Great! Thank you very much! Luckily, I have already had a small java
script function - to check, what users enter. I have added commands
you recommend and yes, I get another form on the screen! Of course,
there is still plenty of work changing recordsets and code, if I
submit form every time user selects something, but I expect my asp
page to be simpler and faster with this method.

Interesting, that me and a collegue of mine have tried the 1st method
to re-direct to another form, but we used "Submit" type button, and it
didn't work. If you have a minute and it is easy to explain, why
"button" type button re-directs and "Submit" type button using the
same function doesn't?
Thank you once more. It is very kind of you to help such novices as
myself.

"Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in message news:<Od******* *******@TK2MSFT NGP10.phx.gbl>. ..
Anytime :)

I have 3 different ways in mind to make what you want:
1. You could make the submit button a normal button (use type="button"
instead of type="submit") and make its onclick event calls a javascipt
function.
The javscript function should check the event and then set the action
proprty of the form to the needed asp page whether it's the same page or
another one(<FormID>.ac tion = "<WebPagePath>" ); after that the javascript
function should call the submit method on the form (<FormID>.submi t)

2. You could make the last select box in a different form and have a
separate submit button. This helps you make this new form have a different
action and go to a different page. (This might not be appealing).

3. Make all events post to the same page and put a server side script at the
very top of the page to check for the events that should send to other
pages. If you should send to another page, you could use response.redire ct
method (This solution is the least appealing because it posts back to the
same page again then redirects to the other page in case of that event which
is an overhead).

The best solution is the first one but it needs that you write some
javascript code (Very little though. About 5 or 6 lines of code only)

Regards
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

"Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
news:cc******** *************** ***@posting.goo gle.com...
Mohamed
Thank you for your help. I really appreciate it.
It is very interesting idea - to submit form to itself. A question:
with my 6 select boxes I'll submit the form to itself 5 times:
<form action=thesamep age.asp method=post>
Then, when something is selected in the very last box and user clicks
the button Submit, I need to pass information to another form. I am
sure it should be very simple, but I cannot find it, how to submit a
form to itself and, after certain event, to a different form?

4guysfromrolla site you recommend is very useful and very easy to
read.

Thank you once more.
Best Regards.
Galina

"Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in

message news:<#u******* *******@TK2MSFT NGP11.phx.gbl>. ..
Are you using ASP or ASP.net?
If you are using ASP, then there is no AutoPostback property. In this case, you should make each of the listboxes submit values to an asp page (could be the same page) which get the values from the database (the usual way you did before).

I see from your code that you are using "select" which is an HTML control, so it's better that you use the previous strategy in all cases rather than using the AutoPostBack Property.

In general the old code that you used before to connect to the database
should suffice your need.
A good ASP site that contains some tutorials is:
http://www.4guysfromrolla.com

Regards
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

"Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
news:cc******** *************** ***@posting.goo gle.com...
> Mohamed
> Thank you very much for your answer.
>
> I have set AutoPostBackBac k property to true, I hope, correctly:
> <select name="selFacult y" AUTOPOSTBACK = TRUE
>
onChange="popul ateLecturer_fro m_Faculty(this. options[this.selectedIn dex].val ue),
> populateCourse_ from_Faculty(th is.options[this.selectedIn dex].value);">
>
> Would it be possible for you to point me in a direction of a code,
> which retrieves the data from the database, when selected item is auto
> posted? It is my very first asp page...
> Galina
>
> "Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in message news:<#n******* *******@TK2MSFT NGP11.phx.gbl>. .. > > Do you mean that when a user chooses faculty for example, the page is
posted > > back to the server to get the values for lists of lectures and courses? > > or Do you mean that all those values are taken from the database once
and > > client side script handles the case when the user makes his choices?
> >
> >
> > If you use the option of getting the data from the database at start and > > then a client side script would handle the choices of the user, the page
is > > not posted back unless the submit button is clicked. In this case, when
the > > user presses the back button, the web browser would return to the first
page > > and the choices won't be saved. If this is actually your scenario and
you > > want the back button to return to the choices the user made, then you
could > > make the list boxes post back (set AutoPostBackBac k property to true)
and > > retrieve the data from the database in that event. This means that when
a > > user makes a choice in one of the listboxes, the request will be posted
to > > the server and the needed data is retrieved and returned to the client. > > This way would make the loading of the page quicker in the first time,
but > > would need make more roundtrips between the server and the user's browser > > when the user makes a selection from the list boxes.
> >
> > regards
> > Mohamed El Ashmawy
> > Microsoft GTSC Developer support for Middle East
> >
> > "Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
> > news:cc******** *************** ***@posting.goo gle.com...
> > > Hello
> > > I have 6 dependent list boxes on my ASP page:
> > >  Faculty;
> > >  Lecturer;
> > >  Course;
> > >  Course occurrence;
> > >  Group;
> > >  Week commencing date.
> > > When faculty is selected, lists of lecturers and courses are
> > > populated. When course is selected, lists of occurrences, groups and > > > dates are populated.
> > > All data to populate list boxes come from a database on SQL server, > > > from separate recordsets. List boxes are populated on the client side > > > using functions generated in the source, when asp page is processed on > > > the server side. An example:
> > > function populateLecture r_from_Faculty( Faculty) {
> > > prodBox1 = document.getSea rch.selLecturer
> > > clearBox(prodBo x1);
> > > switch (Faculty) {
> > >
> > > case 'ABT' :
> > > addBoxItem(prod Box1, ' ', '*');
> > >
> > > addBoxItem(prod Box1, 'Baxxr, V', '52');
> > >
> > > addBoxItem(prod Box1, 'Coxxly, M', '293');
> > >
> > > addBoxItem(prod Box1, 'Dxxn, T', '357');
> > >
> > > break;
> > >
> > > case 'BMP' :
> > > addBoxItem(prod Box1, ' ', '*'); addBoxItem(prod Box1, 'Buxxll, N',
> > > '4197');
> > >
> > > addBoxItem(prod Box1, 'Caxxde, J', '2779');
> > >
> > > addBoxItem(prod Box1, 'Vowxxs, C', '1279');
> > >
> > > break;
> > >
> > > case 'CHT' :
> > > addBoxItem(prod Box1, ' ', '*');
> > >
> > > addBoxItem(prod Box1, 'Bisxxp, E', '2763');
> > >
> > > addBoxItem(prod Box1, 'Brxxey, D, '172');
> > >
> > > break;
> > >
> > > case 'CLT' :
> > > addBoxItem(prod Box1, ' ', '*');
> > >
> > > addBoxItem(prod Box1, 'Garxxng, M', '471');
> > >
> > > addBoxItem(prod Box1, 'Waxxh, J', '1302');
> > >
> > > break;
> > >
> > > and so on.
> > >
> > > It is of course a very long source, but it works.
> > > When user selects everything, the selection uniquely identifies a
> > > group of students. When user clicks the button Submit, another asp
> > > page is activated showing room(s) occupied by this group on each day > > > of the selected week. It also works.
> > > My problem: when user clicks the button Back of the browser to return > > > to the selection asp page, the selection disappears. All list boxes > > > return to the full initial lists of faculties, lecturers, courses and > > > so on and the first item of each list is shown rather then that one > > > that was selected.
> > > Why does asp page changes, when user navigates back to it? How can I > > > prevent this change? I want my users to see the same data, when they > > > return to the page.
> > > The browser is IE 5.5 on Windows 9x and 6.0. on Windows 2000. (Being a > > > large college, we have PCs in different stages of Windows update.) The > > > problem looks the same on both browsers.
> > > Any help will be greatly appreciated.
> > > Thank you.
> > > Galina

Nov 18 '05 #7
The submit button actually submits the form (in contrast "button" that
doesn't do so).
Thus if you use the submit button, the form is submitted even before your
javascript is processed and the action poperty that you change in your
javascript code doesn't get processed before the form is submitted.
Howerver, when you use a normal "button", no submit occurs until you call
the submit method(<FormID> .submit) so you can control the order and have the
action property set before calling the submit method.

Best Regards and best of luck for you and your collegue
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East


"Galina" <ga****@mail.ru > wrote in message
news:ec******** *************** **@posting.goog le.com...
Great! Thank you very much! Luckily, I have already had a small java
script function - to check, what users enter. I have added commands
you recommend and yes, I get another form on the screen! Of course,
there is still plenty of work changing recordsets and code, if I
submit form every time user selects something, but I expect my asp
page to be simpler and faster with this method.

Interesting, that me and a collegue of mine have tried the 1st method
to re-direct to another form, but we used "Submit" type button, and it
didn't work. If you have a minute and it is easy to explain, why
"button" type button re-directs and "Submit" type button using the
same function doesn't?
Thank you once more. It is very kind of you to help such novices as
myself.

"Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in

message news:<Od******* *******@TK2MSFT NGP10.phx.gbl>. ..
Anytime :)

I have 3 different ways in mind to make what you want:
1. You could make the submit button a normal button (use type="button"
instead of type="submit") and make its onclick event calls a javascipt
function.
The javscript function should check the event and then set the action
proprty of the form to the needed asp page whether it's the same page or
another one(<FormID>.ac tion = "<WebPagePath>" ); after that the javascript
function should call the submit method on the form (<FormID>.submi t)

2. You could make the last select box in a different form and have a
separate submit button. This helps you make this new form have a different action and go to a different page. (This might not be appealing).

3. Make all events post to the same page and put a server side script at the very top of the page to check for the events that should send to other
pages. If you should send to another page, you could use response.redire ct method (This solution is the least appealing because it posts back to the same page again then redirects to the other page in case of that event which is an overhead).

The best solution is the first one but it needs that you write some
javascript code (Very little though. About 5 or 6 lines of code only)

Regards
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

"Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
news:cc******** *************** ***@posting.goo gle.com...
Mohamed
Thank you for your help. I really appreciate it.
It is very interesting idea - to submit form to itself. A question:
with my 6 select boxes I'll submit the form to itself 5 times:
<form action=thesamep age.asp method=post>
Then, when something is selected in the very last box and user clicks
the button Submit, I need to pass information to another form. I am
sure it should be very simple, but I cannot find it, how to submit a
form to itself and, after certain event, to a different form?

4guysfromrolla site you recommend is very useful and very easy to
read.

Thank you once more.
Best Regards.
Galina

"Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in

message news:<#u******* *******@TK2MSFT NGP11.phx.gbl>. ..
> Are you using ASP or ASP.net?
> If you are using ASP, then there is no AutoPostback property. In this
case,
> you should make each of the listboxes submit values to an asp page

(could be
> the same page) which get the values from the database (the usual
way you
> did before).
>
> I see from your code that you are using "select" which is an HTML

control,
> so it's better that you use the previous strategy in all cases
rather than
> using the AutoPostBack Property.
>
> In general the old code that you used before to connect to the
database > should suffice your need.
> A good ASP site that contains some tutorials is:
> http://www.4guysfromrolla.com
>
> Regards
> Mohamed El Ashmawy
> Microsoft GTSC Developer support for Middle East
>
> "Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
> news:cc******** *************** ***@posting.goo gle.com...
> > Mohamed
> > Thank you very much for your answer.
> >
> > I have set AutoPostBackBac k property to true, I hope, correctly:
> > <select name="selFacult y" AUTOPOSTBACK = TRUE
> >
>

onChange="popul ateLecturer_fro m_Faculty(this. options[this.selectedIn dex].val
> ue),
> > populateCourse_ from_Faculty(th is.options[this.selectedIn dex].value);"> > >
> > Would it be possible for you to point me in a direction of a code,
> > which retrieves the data from the database, when selected item is auto > > posted? It is my very first asp page...
> > Galina
> >
> > "Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in message news:<#n******* *******@TK2MSFT NGP11.phx.gbl>. ..
> > > Do you mean that when a user chooses faculty for example, the
page is
posted
> > > back to the server to get the values for lists of lectures and

courses?
> > > or Do you mean that all those values are taken from the database

once
and
> > > client side script handles the case when the user makes his
choices? > > >
> > >
> > > If you use the option of getting the data from the database at start and
> > > then a client side script would handle the choices of the user,
the page
is
> > > not posted back unless the submit button is clicked. In this
case, when
the
> > > user presses the back button, the web browser would return to
the first
page
> > > and the choices won't be saved. If this is actually your
scenario and
you
> > > want the back button to return to the choices the user made,
then you
could
> > > make the list boxes post back (set AutoPostBackBac k property to

true)
and
> > > retrieve the data from the database in that event. This means
that when
a
> > > user makes a choice in one of the listboxes, the request will be

posted
to
> > > the server and the needed data is retrieved and returned to the

client.
> > > This way would make the loading of the page quicker in the first

time,
but
> > > would need make more roundtrips between the server and the
user's browser
> > > when the user makes a selection from the list boxes.
> > >
> > > regards
> > > Mohamed El Ashmawy
> > > Microsoft GTSC Developer support for Middle East
> > >
> > > "Galina" <ga*********@ci tyofbristol.ac. uk> wrote in message
> > > news:cc******** *************** ***@posting.goo gle.com...
> > > > Hello
> > > > I have 6 dependent list boxes on my ASP page:
> > > >  Faculty;
> > > >  Lecturer;
> > > >  Course;
> > > >  Course occurrence;
> > > >  Group;
> > > >  Week commencing date.
> > > > When faculty is selected, lists of lecturers and courses are
> > > > populated. When course is selected, lists of occurrences,
groups and
> > > > dates are populated.
> > > > All data to populate list boxes come from a database on SQL

server,
> > > > from separate recordsets. List boxes are populated on the
client side
> > > > using functions generated in the source, when asp page is

processed on
> > > > the server side. An example:
> > > > function populateLecture r_from_Faculty( Faculty) {
> > > > prodBox1 = document.getSea rch.selLecturer
> > > > clearBox(prodBo x1);
> > > > switch (Faculty) {
> > > >
> > > > case 'ABT' :
> > > > addBoxItem(prod Box1, ' ', '*');
> > > >
> > > > addBoxItem(prod Box1, 'Baxxr, V', '52');
> > > >
> > > > addBoxItem(prod Box1, 'Coxxly, M', '293');
> > > >
> > > > addBoxItem(prod Box1, 'Dxxn, T', '357');
> > > >
> > > > break;
> > > >
> > > > case 'BMP' :
> > > > addBoxItem(prod Box1, ' ', '*'); addBoxItem(prod Box1, 'Buxxll,
N', > > > > '4197');
> > > >
> > > > addBoxItem(prod Box1, 'Caxxde, J', '2779');
> > > >
> > > > addBoxItem(prod Box1, 'Vowxxs, C', '1279');
> > > >
> > > > break;
> > > >
> > > > case 'CHT' :
> > > > addBoxItem(prod Box1, ' ', '*');
> > > >
> > > > addBoxItem(prod Box1, 'Bisxxp, E', '2763');
> > > >
> > > > addBoxItem(prod Box1, 'Brxxey, D, '172');
> > > >
> > > > break;
> > > >
> > > > case 'CLT' :
> > > > addBoxItem(prod Box1, ' ', '*');
> > > >
> > > > addBoxItem(prod Box1, 'Garxxng, M', '471');
> > > >
> > > > addBoxItem(prod Box1, 'Waxxh, J', '1302');
> > > >
> > > > break;
> > > >
> > > > and so on.
> > > >
> > > > It is of course a very long source, but it works.
> > > > When user selects everything, the selection uniquely identifies a > > > > group of students. When user clicks the button Submit, another asp > > > > page is activated showing room(s) occupied by this group on

each day
> > > > of the selected week. It also works.
> > > > My problem: when user clicks the button Back of the browser to

return
> > > > to the selection asp page, the selection disappears. All list

boxes
> > > > return to the full initial lists of faculties, lecturers,
courses and
> > > > so on and the first item of each list is shown rather then
that one
> > > > that was selected.
> > > > Why does asp page changes, when user navigates back to it? How
can I
> > > > prevent this change? I want my users to see the same data,
when they
> > > > return to the page.
> > > > The browser is IE 5.5 on Windows 9x and 6.0. on Windows 2000.

(Being a
> > > > large college, we have PCs in different stages of Windows
update.) The
> > > > problem looks the same on both browsers.
> > > > Any help will be greatly appreciated.
> > > > Thank you.
> > > > Galina

Nov 18 '05 #8
Mohamed
Thank you. It is real pleasure to talk to you!
Galina
"Mohamed El Ashamwy" <mo************ ***@egdsc.micro soft.com> wrote in message news:<uW******* *******@TK2MSFT NGP11.phx.gbl>. ..
The submit button actually submits the form (in contrast "button" that
doesn't do so).
Thus if you use the submit button, the form is submitted even before your
javascript is processed and the action poperty that you change in your
javascript code doesn't get processed before the form is submitted.
Howerver, when you use a normal "button", no submit occurs until you call
the submit method(<FormID> .submit) so you can control the order and have the
action property set before calling the submit method.

Best Regards and best of luck for you and your collegue
Mohamed El Ashmawy
Microsoft GTSC Developer support for Middle East

Nov 18 '05 #9

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Hi (Windows XP Pro, MS Access 2003) I have a form that has quite a number of list boxes on it. The list boxes only have 3 or 4 selections possible...Pass, Fail, Average, Not Applicable. The form is used for recording many tests performed on equipment. At present as the tests are conducted, the user clicks on the relevant selection in each list box, then when done saves the results to a table. What I would like to know is if...
2
3268
by: Dave | last post by:
I have 3 tables of information feeding into 4 combo boxes on my main form (DR Form). I have as many list boxes (acting as text boxes) as there are fields in each one of the 3 tables. Once selecting from the combo box, I have all the combo boxes, using afterupdate, populating their respective list boxes. These text boxes are directly correlated to the combo box selection using SQL. Here is an example from the afterupdate event in the...
7
14502
by: robtyketto | last post by:
Greetings, I'm slowly building up code to do the following:- Display TWO selection option boxes (cascading). If the FIRST selection option box changes then reload the jsp using onchange event (not changing the option box value on relaod i.e. not re-running the SQL query). ONLY on initial entry should the form FIRST selection option box should be populated using JDBC SQL.
0
8697
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, weíll explore What is ONU, What Is Router, ONU & Routerís main usage, and What is the difference between ONU and Router. Letís take a closer look ! Part I. Meaning of...
0
9184
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
9045
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
8930
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
4382
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
4634
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
3062
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
2
2359
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
2013
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

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