/**
* @return bool
* @desc Test whether all registered DataValidators are valid and postback is a submit of the full control
*/
public function IsValidSubmit()
{
// Use when the desired behaviour is to assume a GET request is automatically valid, and on postback
// an invalid or internal request shouldn't save, but keep typed values in controls rather than
// repopulating with saved data.
return parent::IsValid() and !$this->IsInternalPostback();
}
