I'm using a listbox that has the Style property set to the "CheckBox - 1" option. Is there a way to disable the other checkboxes if the user clicks a certain checkbox (so he/she cannot make multiple selections). For example, say I have items A thru H and an item called "Select All" in the listbox. If the user clicks "Select All" obviously I don't want the user to still be able to check other boxes--how do I disable them when "Select All" is clicked.

Thanks,
John