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listbox.selecte dvalue does not return anything

Hello

on my asp.net code I load up a listbox on the page_load method. The problem
is that while the items I have added in the page_load do appear when i run
the page, i am unable to get the value of the selected item using
listbox.selecte dvalue etc.

somehow the server side is unaware that i have selected an item.

In fact if i set the listbox.selecte ditem=0; it always returns this item
even though i have selected another item.

any ideas?

thanks!!

Nov 18 '05 #1
5 5918
It sounds like your listbox is being re-populated on each postback
A
"John O'Donnell" <cs************ **@nospam-hotmail.com-nospam> wrote in
message news:ur******** ******@tk2msftn gp13.phx.gbl...
Hello

on my asp.net code I load up a listbox on the page_load method. The problem is that while the items I have added in the page_load do appear when i run
the page, i am unable to get the value of the selected item using
listbox.selecte dvalue etc.

somehow the server side is unaware that i have selected an item.

In fact if i set the listbox.selecte ditem=0; it always returns this item
even though i have selected another item.

any ideas?

thanks!!


Nov 18 '05 #2
in my page load i use this
if{!this.ispost back)
{
populate listbox etc
}

however when i click the button this listbox blanks out and i do not get a
value back.

As i load the listbox using the page_load surely it has to refresh?

"Andrew de la Harpe" <an*********@ho tmail.com> wrote in message
news:Op******** ******@TK2MSFTN GP12.phx.gbl...
It sounds like your listbox is being re-populated on each postback
A
"John O'Donnell" <cs************ **@nospam-hotmail.com-nospam> wrote in
message news:ur******** ******@tk2msftn gp13.phx.gbl...
Hello

on my asp.net code I load up a listbox on the page_load method. The

problem
is that while the items I have added in the page_load do appear when i run the page, i am unable to get the value of the selected item using
listbox.selecte dvalue etc.

somehow the server side is unaware that i have selected an item.

In fact if i set the listbox.selecte ditem=0; it always returns this item
even though i have selected another item.

any ideas?

thanks!!



Nov 18 '05 #3
is viewstate enabled for that control?

"John O'Donnell" <cs************ **@nospam-hotmail.com-nospam> wrote in
message news:%2******** **********@TK2M SFTNGP09.phx.gb l...
in my page load i use this
if{!this.ispost back)
{
populate listbox etc
}

however when i click the button this listbox blanks out and i do not get a
value back.

As i load the listbox using the page_load surely it has to refresh?

"Andrew de la Harpe" <an*********@ho tmail.com> wrote in message
news:Op******** ******@TK2MSFTN GP12.phx.gbl...
It sounds like your listbox is being re-populated on each postback
A
"John O'Donnell" <cs************ **@nospam-hotmail.com-nospam> wrote in
message news:ur******** ******@tk2msftn gp13.phx.gbl...
Hello

on my asp.net code I load up a listbox on the page_load method. The

problem
is that while the items I have added in the page_load do appear when i run the page, i am unable to get the value of the selected item using
listbox.selecte dvalue etc.

somehow the server side is unaware that i have selected an item.

In fact if i set the listbox.selecte ditem=0; it always returns this item even though i have selected another item.

any ideas?

thanks!!




Nov 18 '05 #4
yes viewstate is enabled

as said...if i load items into the listbox control through the designer
rather than code it all works. It seems that loading items into the listbox
on the page_load causes a problem determining what was selected


"Andrew de la Harpe" <an*********@ho tmail.com> wrote in message
news:eM******** ******@TK2MSFTN GP09.phx.gbl...
is viewstate enabled for that control?

"John O'Donnell" <cs************ **@nospam-hotmail.com-nospam> wrote in
message news:%2******** **********@TK2M SFTNGP09.phx.gb l...
in my page load i use this
if{!this.ispost back)
{
populate listbox etc
}

however when i click the button this listbox blanks out and i do not get a
value back.

As i load the listbox using the page_load surely it has to refresh?

"Andrew de la Harpe" <an*********@ho tmail.com> wrote in message
news:Op******** ******@TK2MSFTN GP12.phx.gbl...
It sounds like your listbox is being re-populated on each postback
A
"John O'Donnell" <cs************ **@nospam-hotmail.com-nospam> wrote in
message news:ur******** ******@tk2msftn gp13.phx.gbl...
> Hello
>
> on my asp.net code I load up a listbox on the page_load method. The
problem
> is that while the items I have added in the page_load do appear when
i run
> the page, i am unable to get the value of the selected item using
> listbox.selecte dvalue etc.
>
> somehow the server side is unaware that i have selected an item.
>
> In fact if i set the listbox.selecte ditem=0; it always returns this

item > even though i have selected another item.
>
> any ideas?
>
> thanks!!
>
>
>
>
>



Nov 18 '05 #5
forget it i goofed up

I had viewstate enabled on all controls but not the page itself.....
damm this has wasted a lot of time

oh well thanks for help!

"Andrew de la Harpe" <an*********@ho tmail.com> wrote in message
news:eM******** ******@TK2MSFTN GP09.phx.gbl...
is viewstate enabled for that control?

"John O'Donnell" <cs************ **@nospam-hotmail.com-nospam> wrote in
message news:%2******** **********@TK2M SFTNGP09.phx.gb l...
in my page load i use this
if{!this.ispost back)
{
populate listbox etc
}

however when i click the button this listbox blanks out and i do not get a
value back.

As i load the listbox using the page_load surely it has to refresh?

"Andrew de la Harpe" <an*********@ho tmail.com> wrote in message
news:Op******** ******@TK2MSFTN GP12.phx.gbl...
It sounds like your listbox is being re-populated on each postback
A
"John O'Donnell" <cs************ **@nospam-hotmail.com-nospam> wrote in
message news:ur******** ******@tk2msftn gp13.phx.gbl...
> Hello
>
> on my asp.net code I load up a listbox on the page_load method. The
problem
> is that while the items I have added in the page_load do appear when
i run
> the page, i am unable to get the value of the selected item using
> listbox.selecte dvalue etc.
>
> somehow the server side is unaware that i have selected an item.
>
> In fact if i set the listbox.selecte ditem=0; it always returns this

item > even though i have selected another item.
>
> any ideas?
>
> thanks!!
>
>
>
>
>



Nov 18 '05 #6

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