Moving listbox items from one to another

[Brian Simmons]

Hi All,

I search on codeproject and google but didn't find what I was looking for.

Anybody know of a good implementation where you have 2 listboxes and you
want to move items between the 2.

I.e.
[Available Items] << < > >> [Select Items]

< > symbols are buttons where:
<< = Move all from righthand side to lefthand side
< = Move the selected item from righthand side to lefthand side

= Move the selected item from lefthand side to righthand side

Thanks,
Brian

 

[bruce barker]

if you want any performance then this must be done in javascript. any
good javascript book should have an example.

hint: as select only post back the selected values, sote the selected
item values in a hidden field (or mark itemes selected in the onsubmit
event).

-- bruce (sqlwork.com)

Hi All,

I search on codeproject and google but didn't find what I was looking for.

Anybody know of a good implementation where you have 2 listboxes and you
want to move items between the 2.

I.e.
[Available Items] << < > >> [Select Items]

< > symbols are buttons where:
<< = Move all from righthand side to lefthand side
< = Move the selected item from righthand side to lefthand side

= Move the selected item from lefthand side to righthand side

Thanks,
Brian

 

[Steven Cheng[MSFT]]

Hi Brian,

For moving or copy items between ASP.NET (or standard html) listbox, there
are two approahes:

** using server-side code to perform the move or copy during postback
event, this will cause multiple postback when you frequently perform the
oepration, but the advantage is that postback can help automatically
maintain the viewstate for control.

** using client-side script to modify the listbox and copy items. This can
avoid postback and give better user experience, but you need to record the
changes at client-side and persist the changes when postback to
server-side(if the page will go across multiple postback during the listbox
items movement)

Here are some web articles which have provided some implementation through
client-side script approach and some has even encapsulated the function
into a custom webcontrol:

#PickList
http://www.codeproject.com/aspnet/DblPanePickList.asp

#How To Move Items Between Lists with JavaScript
http://www.devx.com/getHelpOn/10MinuteSolution/16372/1954?pf=true

#Move Items Between 2 ListBoxes
http://weblogs.asp.net/coltk/archive/2005/06/15/412657.aspx

Hope this helps.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



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[Brian Simmons]

Thanks, very helpful.