Specify the column number using the Col parameter.
Set the property to one of the following values to specify the sort method:
If you want to sort in ascending order, set the property to 1 (Ascending).
If you want to sort in descending order, set the property to 2 (Descending).
Set the UserColAction property to one of the following values to specify what action to perform:
If you want the column to be sorted and display the sort indicator, set the UserColAction property to 1 (Sort).
If you want the column to be sorted and not display the sort indicator, set the UserColAction property to 2 (SortNoIndicator).
If your sheet displays multiple headers and you want the sort indicator to display in a row other than the bottom-most header row, specify which column header row will display the indicator by setting the ColHeadersUserSortIndex property.