не подскажите как на примере это сделать ....а то новичек пока что не понимаю....

Код AS1/AS2:
<?xml version="1.0" encoding="utf-8"?>
<!-- dpcontrols\sparkdpcontrols\SparkDGXMLSort.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
width="500" height="600">
<s:layout>
<s:VerticalLayout paddingTop="10"/>
</s:layout>
<fx:Declarations>
<fx:XMLList id="employees">
<employee>
<name>Joanne Wall</name>
<phone>555-219-2012</phone>
<email>jwall@fictitious.com</email>
<active>true</active>
</employee>
<employee>
<name>Mary Jones</name>
<phone>555-219-2000</phone>
<email>mjones@fictitious.com</email>
<active>true</active>
</employee>
<employee>
<name>mary jones</name>
<phone>555-219-2000</phone>
<email>mjones@fictitious.com</email>
<active>true</active>
</employee>
<employee>
<name>Maurice Smith</name>
<phone>555-219-2012</phone>
<email>maurice@fictitious.com</email>
<active>false</active>
</employee>
<employee>
<name>Dave Davis</name>
<phone>555-219-2000</phone>
<email>ddavis@fictitious.com</email>
<active>true</active>
</employee>
<employee>
<name>Tom Maple</name>
<phone>555-219-2000</phone>
<email>tmaple@fictitious.com</email>
<active>true</active>
</employee>
</fx:XMLList>
<s:XMLListCollection id="employees2" source="{employees}"/>
</fx:Declarations>
<fx:Script>
<![CDATA[
import mx.events.DataGridEvent;
import mx.events.FlexEvent;
import spark.collections.Sort;
import spark.collections.SortField;
import spark.globalization.SortingCollator;
// Create an instance of the SortingCollator.
private var collator:SortingCollator = new SortingCollator();
// Define the sort compare function used by the first column.
private function sortCompareFunction(obj1:Object, obj2:Object, gc:GridColumn):int {
// Make the sort case insensitive. The default is case sensitive.
collator.ignoreCase = true;
return collator.compare(obj1[gc.dataField], obj2[gc.dataField]);
}
]]>
</fx:Script>
<s:Label text="Custom case insensitive sort of the Name colum"/>
<s:DataGrid id="dg" width="500" dataProvider="{employees2}">
<s:columns>
<s:ArrayList >
<s:GridColumn dataField="name" headerText="Name"
sortCompareFunction="sortCompareFunction"/>
</s:ArrayList>
</s:columns>
</s:DataGrid>
<s:Label text="Default case sensitive sort of the Name colum"/>
<s:DataGrid id="dg1" width="500" dataProvider="{employees2}" >
<s:columns>
<s:ArrayList>
<s:GridColumn dataField="phone" headerText="Phone"/>
<s:GridColumn dataField="email" headerText="Email"/>
</s:ArrayList>
</s:columns>
</s:DataGrid>
</s:Application>