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multiple column sorting problem adg flex 4

arigs asked
Last Modified: 2012-05-11
Hi Experts,

                     I am trying to do multiple column sorting on adg. when i click in the header , the data getting sorted in reverse way.  here is my code snippet.

private function sortSub(itemA:Object, itemB:Object):int
                        var messageA:MessagerVo = itemA as MessagerVo ;
                        var messageB:MessagerVo = itemB as MessagerVo ;
                        if(messageA.priority == messageB.priority)
                              var unReadA:int;
                              var unReadB:int;
                                    unReadA = 1;
                                    unReadA = 0;
                                    unReadB = 1;// unread 1, read 0
                                    unReadB = 0;// read
                              if(unReadA == unReadB)
                                    return ObjectUtil.dateCompare(messageA.createDate,messageB.createDate);
                              return ObjectUtil.numericCompare(unReadA,unReadB);
                        return       ObjectUtil.numericCompare(int(messageA.priority),int(messageB.priority));
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