constants SortTypeEnum
Defines how a column can be sorted. The SortType property returns or sets a value that indicates the way the control sorts the values for a column.

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 The values sorted are the user data of cells. Values are sorted as numbers.
exSortByValue16 The column gets sorted by cell's value rather than cell's caption.
exSortByState32 The column gets sorted by cell's state rather than cell's caption.
exSortByImage48 The column gets sorted by cell's image rather than cell's caption.