[flexcoders] I want to apply a default sorting to the datagrid when it's dataprovider is set

[hansenallanlund]

i have an initial default sorting set on my datagrid 
"tasksList.dispatchEvent(new 
DataGridEvent(DataGridEvent.HEADER_RELEASE, false, true, 
UPDATE_DATE_COLUMN_POSITION, null, 0, null, null,0)); 
" 
however i need to know what event to listen for if i only want to set 
the default sorting when the dataprovider is set not when it is 
updated.