Retrieves or sets a value that indicates whether the column's caption should
appear in underline.
| Type | Description | |||
| Boolean | A boolean expression that indicates whether the column's caption should appear in underline. |
Use the HeaderUnderline property to specify whether the column's caption
should appear in underline. Use the CellUnderline or ItemUnderline properties to specify whether
the cell or the item should appear in underline. Use the HeaderItalic,
HeaderBold or HeaderStrikeOut
property to specify different font attributes when displaying the column's
caption.