TActiveCheckBoxList is the active counterpart to the original TCheckBoxList control.
The AutoPostBack property is set to true by default.
Thus, when a checkbox is clicked a OnCallback event is
raised after OnSelectedIndexChanged event.
set to true (default is true), changes to the selection will be updated
on the client side.
List items can not be changed dynamically during a callback request.
Please refer to the original documentation of TCheckBoxList for usage.