The VtSortType constants provide options for sorting pie charts.
| Constant | Description |
| VtSortTypeNone | Pie slices are drawn in the order the data appears in the data grid. |
| VtSortTypeAscending | Pie slices are drawn, in order, from the smallest to the largest slice, starting at the defined starting angle and in the defined plot direction. |
| VtSortTypeDescending | Pie slices are drawn, in order, from the largest to the smallest slice, starting at the defined starting angle and in the defined plot direction. |