By default, the SortOrder property is SortNone. Use the SortOrder property to specify the default sorting order of the pivot column. It specifies the sorting order of the pivot column when inserted to the control's pivot bar by drag and drop or when selecting from the + ( expand button) on the control's pivot bar. The SortType property returns or sets a value that indicates the way a control sorts the values for a column. Use the DisplayFilterList property to specify whether the column's header displays a drop down filter button.