RadTabControlBase.DropDownOpened Event
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RadTabControlBaseDropDownOpened Event
An event that is raised when the DropDownMenu is opened. This is a RoutedEvent.

Namespace: Telerik.Windows.Controls.TabControl
Assembly: Telerik.Windows.Controls.Navigation (in Telerik.Windows.Controls.Navigation.dll) Version: 2018.2.515.40 (2018.2.515.40)
Syntax
public virtual event DropDownEventHandler DropDownOpened

Value

Type: Telerik.Windows.ControlsDropDownEventHandler
See Also