The following example uses the Selected property to move selected items in the lstSource list box to the lstDestination list box. The lstDestination list box's RowSourceType property is set to Value List and the control's RowSource property is constructed from all the selected items in the lstSource control. The lstSource list box's MultiSelect property is set to Extended. The CopySelected( ) function is called from the cmdCopyItem command button.
Sub cmdCopyItem_Click()
CopySelected Me
End Sub
Function CopySelected(frm As Form) As Integer
Dim ctlSource As Control
Dim ctlDest As Control
Dim strItems As String
Dim intCurrentRow As Integer
Set ctlSource = frm!lstSource
Set ctlDest = frm!lstDestination
For intCurrentRow = 0 To ctlSource.Listcount - 1
If ctlSource.Selected(intCurrentRow) Then
strItems = strItems & ctlSource.Column(0, _
intCurrentRow) & ";"
End If
Next intCurrentRow
' Reset destination control's RowSource property.
ctlDest.RowSource = ""
ctlDest.RowSource = strItems
End Function