Notes: That event was designed for extended editors.
In case of numeric editor the eventArgs is instance of NumericEditorInvalidValueEventArgs, date-time editors: DateTimeEditorInvalidValueEventArgs and mask editor: MaskEditorInvalidValueEventArgs.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2