System.Windows.Forms 2.0.0.0 System.Enum The is used by the property of the class. is the default value. To force a control update when the update mode is , use the method on the related . Determines when changes to a data source value get propagated to the corresponding data-bound control property. Field System.Windows.Forms.ControlUpdateMode The bound control is never updated when a data source value changes. The data source is write-only. 2.0.0.0 Field System.Windows.Forms.ControlUpdateMode The bound control is updated when the data source value changes, or the data source position changes. 2.0.0.0