I am developing an asp.net application where there are several listboxes I need users to make selections in. I would like it so that when the user clicks on the box (or perhaps a button beside the box) a pop up allows the user to add and remove items as follows.
Here is the list box in its normal state:
When the user licks into the box the following pops up allowing for changes:
Clicking off this control will return the user to the page and the target listbox control will reflect the changes.
I have seen this in action but can't find one to give as an example.