TrackTotal.numericSort should be ok. But your compare function is using a variable "col" which may not be correct.
You should just be able to set the isNumeric flag on a SortFIeld and get what you want From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of markgoldin_2000 Sent: Monday, September 01, 2008 10:05 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] Why this does not work? I have a class based on DataGrid: package CustomComponents { import mx.collections.*; import mx.controls.DataGrid; import mx.controls.dataGridClasses.*; import mx.events.DataGridEvent; import mx.utils.ObjectUtil; public class sortableDataGrid extends DataGrid { public function sortableDataGrid() { super(); addEventListener("headerRelease", headerReleaseHeandler); } .... This class has a public function: public function numericSort(itemA:Object, itemB:Object):int { return ObjectUtil.numericCompare(itemA[col], itemB[col]); } I am using this class in mxml class: <customComponents:sortableDataGrid height="100%" enabled="true" id="TrackTotal" verticalScrollPolicy="on" rowHeight="22" width="100%"> <customComponents:columns> <mx:DataGridColumn headerText="Inbound Train" dataField="tcotid"/> <mx:DataGridColumn headerText="Block" dataField="tcbkcd"/> <mx:DataGridColumn headerText="Position" dataField="tccntl" sortCompareFunction="TrackTotal.numericSort"/> <mx:DataGridColumn headerText="Car Initial" dataField="tccari"/> <mx:DataGridColumn headerText="Car Number" dataField="tccarn"/> <mx:DataGridColumn headerText="L/E Status" dataField="tclest"/> <mx:DataGridColumn headerText="Car Type" dataField="tcctyp"/> </customComponents:columns> </customComponents:sortableDataGrid> I am having problem with sortCompareFunction="TrackTotal.numericSort". The compiler will not take sortCompareFunction="numericSort" and I dont know why. If I use TrackTotal.numericSort then it gets compiled but the run- time fails with: Error: Error #1009: Cannot access a property or method of a null object reference. Can someone help, please?
