How to: Display Subitems in Columns with the Windows Forms ListView Control
The Windows Forms ListView control can display additional text, or subitems, for each item in the Details view. The first column displays the item text, for example an employee number. The second, third, and subsequent columns display the first, second, and subsequent associated subitems.
To add subitems to a list item
Add any columns needed. Because the first column will display the item's Text property, you need one more column than there are subitems. For more information on adding columns, see How to: Add Columns to the Windows Forms ListView Control.