Expand Button
Expand buttons enable end-users to expand or collapse parent nodes (nodes that have children). When a parent node is collapsed, the node’s expand button displays a ‘plus’ sign indicating that the node can be expanded by clicking the button. Once a node has been expanded, the node’s button displays a ‘minus’ sign.
The table below lists the main properties that affect the element’s appearance:
Visibility | The TreeListOptionsView.ShowButtons option. |
Appearance | The TreeListAppearanceCollection.GroupButton property. Note: the appearance settings are ignored if a Tree List is painted in WindowsXP or Office2003 style. |
Custom Draw Event | The TreeList.CustomDrawNodeButton event. |
Vertical Alignment | The TreeListOptionsView.ExpandButtonCentered property. |
See Also