How can i sort a single AdvancedDataGridColumn in a AdvancedDataGrid?

Question

Hello,
I am using a ADG, which populates the returned data(arraycollection) from database. I'm generating a counter on java side for each returned record and showing that counter in ADGcolumn. I just want to sort that particular column.
When i debug the application, i'm getting the counter count properly but when its showing in ADG, sorting is missing. when i clicks on coloum header, then only its showing in ascending order, i need to show up in ascending order without clicking on column header.
Can anyone help me in this issue??

Answer 1

Hi Johnny,
Thanks for your helpful code, its really working for me.
but i have an issue, once i apply the sort, i'm getting number '1' and down arrow symbol on ADGcolumnheader.
i'm using a itemrenderer to get rid of '1' but i need to make invisible the down arrow symbol too.
sortExpertMode property is working for other columns but not for the column which i'm applying sort.
Here is the code which disabling the number on columnheader:
package
import mx.controls.advancedDataGridClasses.AdvancedDataGridSortItemRenderer; 
import mx.core.UITextField; 
public class ADGSortItemRenderer extends AdvancedDataGridSortItemRenderer{
public function ADGSortItemRenderer(){
//TODO: implement function
override protected function childrenCreated():void{ 
super.childrenCreated(); 
//Get reference to sort number text field
var sortOrderTextField:UITextField = this.getChildAt(0) as UITextField; 
if(sortOrderTextField != null){ 
//Hide sort number text field
sortOrderTextField.includeInLayout =
false;sortOrderTextField.visible =
false;}
here is the image:
is there any way to disable both the number(1) & down arrow??
Thanks,
Shravan P.