System.Windows.Forms 2.0.0.0 System.ComponentModel.CancelEventArgs Use data from the class to determine which actions to take when the user closes the drop-down list but before the list is closed. Provides data for the event. Constructor Use data from the class to determine which actions to take when the user closes the drop-down list but before the list is closed. Initializes a new instance of the class with the specified reason for closing. One of the values. 2.0.0.0 Property System.Windows.Forms.ToolStripDropDownCloseReason To be added. To be added. Gets the reason that the is closing. 2.0.0.0