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  • Right, when the form is posted but with no data - in my form's case, the no data means to delete all of the entries so I need to determine when posted && empty. Commented Sep 14, 2011 at 23:16
  • Why not force the user to check the "All" box? Sometimes users might forget to check a box when they meant to. Or at the least, popup a modal dialog asking if they are sure they want to delete everything and force them to say OK. Commented Sep 14, 2011 at 23:30
  • Because I am using the checkbox to allow the user to set something to enabled/disabled. Unchecking it sets it to disabled. Forcing them to check the box doesn't make sense in this case. Commented Sep 14, 2011 at 23:42