The ASPxListBox control displays a list of items that can be selected by end-users.
The ASPxListBox editor allows selecting multiple list items at the same time using the ASPxListBox.SelectionMode property. The following selection modes are available:
End-users can select only one item within the editor.
End-users can select multiple items within the editor by clicking list items while pressing Ctrl (to add an individual item) or Shift (to select a range of items).
End-users can select multiple items within the editor by clicking list items (use the Shift key to select a range of items).
End-users can filter items by entering text in the filter editor above the list. To make the filter editor visible, set the ListBoxFilteringSettings.ShowSearchUI property to true. When an end-user types a filter string, the items list is automatically updated to display only the items that match the filter string. To make all the list box items visible, clear the filter editor.
The list box editor allows displaying its list data in several columns. This functionality is in effect if the editor's items collection is obtained from a data source.