Possible enumeration values:

NameValueDescription
Name

1

Sort by name ascending
NameDesc

-1

Sort by name descending
Description

2

Sort by description ascending
DescriptionDesc

-2

Sort by description descending
Number

3

Sort by number ascending
NumberDesc

-3

Sort by number descending
CreateDate

4

Sort by create date ascending
CreateDateDesc

-4

Sort by create date descending
LastUpdateDate

5

Sort by last update date ascending
LastUpdateDateDesc

-5

Sort by last update date descending