set UltraWebGrid properties: allow sort: UWG_AvailableItem.DisplayLayout.AllowSortingDefault = Infragistics.WebUI.UltraWebGrid.AllowSorting.Yes; sort by click collumn header: UWG_AvailableItem.DisplayLayout.HeaderClickActionDefault = Infragistics.WebUI.UltraWebGrid.HeaderClickAction.SortSingle;
Set a column unsortable: uwg_availableitem.columns [n] .sortindicator = infragistics.webui.ultrawebgrid.sortindicator.disabled;
