How to get the column name of sort request, but not index number?

lifeng_cool

An index value assigned to iSortCol_(int) variable when you click the table header and request for server side sorting.

I need to sort just by the request field name. How could I get the sName of the sort column name? If I specified aoColumns and sColumn

lifeng_cool

I fond a simple sulotion . just define a array of the column names , and get the specified name by the iSortCol_(int) index.

another question is that aoColumns seems doesn't work , the data order is always the same . why ? any other parameters should be specified ?

I'm new to datatables....