how to sort column by alphabetical order when grid loads

how to sort a column by alphabetical order when grid loads not after clicking on header.

try to use sortRows method.
http://docs.dhtmlx.com/doku.php?id=dhtmlxgrid:api_method_dhtmlxgridobject_sortrows
For example:

mygrid.loadXML("grid.xml", function(){ mygrid.sortRows(0,"str","asc"); });

oh thank u very much sematik…that works fine…thank uuuuuuu