constants IncludeExpandColumnEnum
The IncludeExpandColumnEnum type specifies whether the columns display its data when it contains child columns, and it is expanded. The IncludeExpandColumn property specifies whether the column itself is displayed in the list (header/chart), while it expanded ( the column contains child columns ). The IncludeExpandColumnEnum type supports the following values:

NameValueDescription
exExcludeExpandColumn0 The column itself is not displayed when it is expanded and it contains child columns (default).
exIncludeExpandColumn1 The column itself is displayed, when it is expanded and it contains child columns. This flag can be combined with the exIncludeExpandColumnSingle flag.
exIncludeExpandColumnSingle16 The column itself is displayed, even if it contains a single child column. This flag can be combined with the exIncludeExpandColumn flag.