This functionality works for me. The dataProvider arraycollection is bind to my 
datagrid (in mxml). When my dataProvider is filled with the data, I do the 
following:
 

var s:Sort = new Sort();
s.fields = [new SortField("transaction_date",false,true)];
dataProvider.sort = s;
dataProvider.refresh(); 



I also have sortDescending="true" on my transaction_date column

Adam


  ----- Original Message ----- 
  From: Toby Dussek 
  To: [email protected] 
  Sent: Thursday, March 08, 2007 9:47 AM
  Subject: [flexcoders] Show sort arrow when datagrid first renders


  How can I get the datagrid dsort arrow ot appear without the user 
  clicking? I need to indicate the initial default sort order, but when I 
  sort the data model, the datagrid doesn't show an arrow until a column 
  is clicked.

  Toby Dussek
  UK


   

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