ASP.NET ListBox, post back and focus of selected items

[probashi]

Hi,

Issue: After post back selected item of a list box is getting out of
focus (when it contains more items than it's size).

I have a List Box in an ASPX page. I select an item from the ListBox
and after post back the item is still selected but it is not focused
(i.e. I have to scroll down to see the selected item)

Any way to fix this!

Thanks.

[=?Utf-8?B?U2l2YSBN?=]

See if setting MaintainScrollPositionOnPostback="true" for the @Page attibute
helps.

"probashi" wrote:

Hi,

Issue: After post back selected item of a list box is getting out of
focus (when it contains more items than it's size).

I have a List Box in an ASPX page. I select an item from the ListBox
and after post back the item is still selected but it is not focused
(i.e. I have to scroll down to see the selected item)

Any way to fix this!

Thanks.

[probashi]

Unfortunately it does not help.

Looks like custom JavaScript will be my last option.

Thanks

On May 15, 2:43 am, Siva M <[e-mail]:

See if setting MaintainScrollPositionOnPostback="true" for the @Page attibute
helps.

"probashi" wrote:

Hi,

Issue: After post back selected item of a list box is getting out of
focus (when it contains more items than it's size).

I have a List Box in an ASPX page. I select an item from the ListBox
and after post back the item is still selected but it is not focused
(i.e. I have to scroll down to see the selected item)

Any way to fix this!

Thanks.- Hide quoted text -

- Show quoted text -

[=?Utf-8?B?U2VyZ2V5IFBvYmVyZXpvdnNraXk=?=]

probashi,

on page load event you could do something like the following to ensure the
selected item is visible:
<script type="text/javascript">
var lst = document.getElementById('<%= myListBox.ClientID %>';
if (lst && lst.selectedIndex -1){
lst.focus();
lst.selectedIndex = lst.selectedIndex;
}
</script>

Hope it is not too late for you

"probashi" wrote:

Unfortunately it does not help.

Looks like custom JavaScript will be my last option.

Thanks

On May 15, 2:43 am, Siva M <[e-mail]:

See if setting MaintainScrollPositionOnPostback="true" for the @Page attibute
helps.

"probashi" wrote:

Hi,

Issue: After post back selected item of a list box is getting out of
focus (when it contains more items than it's size).

I have a List Box in an ASPX page. I select an item from the ListBox
and after post back the item is still selected but it is not focused
(i.e. I have to scroll down to see the selected item)

Any way to fix this!

Thanks.- Hide quoted text -

- Show quoted text -

[probashi]

Looks like I cannot solve this with JavaScript either.

Here is the code I tried.
<script type= "text/javascript">
var lst = document.getElementById("list1");
var options = lst.options;
var option;
var i;
for(i = 0; i < options.length; i++)
{

if(options[i].selected)
{

options[i].focus();
}
}
</script>

On May 15, 9:27 am, probashi <[e-mail]:

Unfortunately it does not help.

Looks like custom JavaScript will be my last option.

Thanks

On May 15, 2:43 am, Siva M <[e-mail]:

See if setting MaintainScrollPositionOnPostback="true" for the @Page attibute
helps.

"probashi" wrote:

Hi,

Issue: After post back selected item of a list box is getting out of
focus (when it contains more items than it's size).

I have a List Box in an ASPX page. I select an item from the ListBox
and after post back the item is still selected but it is not focused
(i.e. I have to scroll down to see the selected item)

Any way to fix this!

Thanks.- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -

[=?Utf-8?B?U2VyZ2V5IFBvYmVyZXpvdnNraXk=?=]

probashi,

take a look at my previous response - I have tested it before posting - it
does select the correct item on postback - you need to focus the list and
then select the selected item again.

"probashi" wrote:

Looks like I cannot solve this with JavaScript either.

Here is the code I tried.
<script type= "text/javascript">
var lst = document.getElementById("list1");
var options = lst.options;
var option;
var i;
for(i = 0; i < options.length; i++)
{

if(options[i].selected)
{

options[i].focus();
}
}
</script>

On May 15, 9:27 am, probashi <[e-mail]:

Unfortunately it does not help.

Looks like custom JavaScript will be my last option.

Thanks

On May 15, 2:43 am, Siva M <[e-mail]:

See if setting MaintainScrollPositionOnPostback="true" for the @Page attibute
helps.

"probashi" wrote:
Hi,

Issue: After post back selected item of a list box is getting out of
focus (when it contains more items than it's size).

I have a List Box in an ASPX page. I select an item from the ListBox
and after post back the item is still selected but it is not focused
(i.e. I have to scroll down to see the selected item)

Any way to fix this!

Thanks.- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -

[probashi]

I am sorry for not describing the issue properly.

This issue exists only for multi-select list box.

The code you sent does not work for multi-select list box. It makes
the selected item visible but wipes out all the other selections.

Thanks.

On May 18, 12:59 am, Sergey Poberezovskiy
<[e-mail] e:

probashi,

on page load event you could do something like the following to ensure the
selected item is visible:
<script type="text/javascript">
var lst = document.getElementById('<%= myListBox.ClientID %>';
if (lst && lst.selectedIndex -1){
lst.focus();
lst.selectedIndex = lst.selectedIndex;}

</script>

Hope it is not too late for you

"probashi" wrote:

Unfortunately it does not help.

Looks like custom JavaScript will be my last option.

Thanks

On May 15, 2:43 am, Siva M <[e-mail]:

See if setting MaintainScrollPositionOnPostback="true" for the @Page attibute
helps.

"probashi" wrote:
Hi,

Issue: After post back selected item of a list box is getting out of
focus (when it contains more items than it's size).

I have a List Box in an ASPX page. I select an item from the ListBox
and after post back the item is still selected but it is not focused
(i.e. I have to scroll down to see the selected item)

Any way to fix this!

Thanks.- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -