<com:TContent ID="Content"> <com:TActiveListBox ID="list1" Enabled="false" OnCallback="list1_callback"> <com:TListItem Value="value 1" Text="item 1" /> <com:TListItem Value="value 2" Text="item 2" /> <com:TListItem Value="value 3" Text="item 3" /> <com:TListItem Value="value 4" Text="item 4" /> <com:TListItem Value="value 5" Text="item 5" /> </com:TActiveListBox> <com:TActiveLabel ID="label1" Text="Label 1" /> <com:TActiveButton Text="Enable it" id="button1" onClick="enable_list" /> <div> <pre> SelectionMode="Multiple" --> this doesn't work Enabled="false" --> enable selection in code but --> getSelectedValues returns Null --> enabled and disbaled dynamically doesn't solved the --> problem either. </pre> </div> </com:TContent>