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RadCollapsiblePanelExpanding Event
Occurs before the control is expanded.

Namespace: Telerik.WinControls.UI
Assembly: Telerik.WinControls.UI (in Telerik.WinControls.UI.dll) Version: 2017.2.613.40 (2017.2.613.40)
Syntax
public event CancelEventHandler Expanding

Value

Type: System.ComponentModelCancelEventHandler
See Also