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RadListElementSelectedIndexChanging Event
This event fires before SelectedIndexChanged and provides a means for cancelling the whole selection operation. Someties this event will not fire since cancelling the change is not possible, for example when the DataSource is set to null.

Namespace: Telerik.WinControls.UI
Assembly: Telerik.WinControls.UI (in Telerik.WinControls.UI.dll) Version: 2018.3.1016.40 (2018.3.1016.40)
public event PositionChangingEventHandler SelectedIndexChanging


Type: Telerik.WinControls.UI.DataPositionChangingEventHandler
See Also