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DevExpress v24.2 Update — Your Feedback Matters

Our What's New in v24.2 webpage includes product-specific surveys. Your response to our survey questions will help us measure product satisfaction for features released in this major update and help us refine our plans for our next major release.

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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.

veExpandButton

 

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