System.Windows.Forms 2.0.0.0 System.Enum This enumeration is used by event handlers for the , , , and events of a to determine which of the four events is being handled. This enables one event handler to handle multiple event types. Defines values representing events. Field System.Windows.Forms.TabControlAction Represents the event. 2.0.0.0 Field System.Windows.Forms.TabControlAction Represents the event. 2.0.0.0 Field System.Windows.Forms.TabControlAction Represents the event. 2.0.0.0 Field System.Windows.Forms.TabControlAction Represents the event. 2.0.0.0