sortable.initialDirection String (default: asc)

Determines the inital (from un-sorted to sorted state) sort direction. The supported values are asc and desc.

Example - disable sorting

<div id="grid"></div>
<script>
$("#grid").kendoGrid({
  columns: [
    { field: "id" },
    { field: "name" }
  ],
  sortable: {
    initialDirection: "desc"
  },
  dataSource: [ { id: 1, name: "Jane Doe" }, { id: 2, name: "John Doe" } ]
});
</script>