Hi,
In the o/p screen there are about 20 records.Besides each record there is a checkbox.There are 2 pushbuttons on the top of the screen(checkall and uncheckall).When the user clicks on the checkall pushbutton,all the checkboxes should be checked.Similarly when the uncheckall push button is clicked,all the check boxes should be unchecked.Can anyone tell me how to do this?