The datagrid row has not 'blur' event since it can not be focused. Of course, you can extend your own row events for the datagrid. The code below shows how to bind the 'mousedown' event to the datagrid rows.
<script>
$.extend($.fn.datagrid.defaults.rowEvents,{
mousedown: function(e){
console.log('mousedown')
}
})
</script>