constants SortTypeEnum
The SortTypeEnum enumeration defines the types of sorting in the control. Use the SortType property to specifies the type of column's sorting.

NameValueDescription
SortString0 (Default) Values are sorted as strings.
SortNumeric1 Values are sorted as numbers. Any non-numeric value is evaluated as 0.
SortDate2 Values are sorted as dates. Group ranges are one day.
SortDateTime3 Values are sorted as dates and times. Group ranges are one second.
SortTime4 Values are sorted using the time part of a date and discarding the date. Group ranges are one second.
SortUserData5 Reserved.
SortCellData6 Reserved.
SortCellDataString7 Reserved.