DataSourceUpdateMode Enumeration


Specifies when a data source is updated when changes occur in the bound control.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public enum DataSourceUpdateMode

Member nameDescription

Data source is never updated and values entered into the control are not parsed, validated or re-formatted.


Data source is updated whenever the value of the control property changes.


Data source is updated when the control property is validated,

When a control is bound to a data source using a Binding object, you can specify when an update to the data source will occur using the DataSourceUpdateMode enumeration.

When the update mode is Never, you can force the data source to be updated by using the WriteValue method.


Even when the update mode is set to Never, the data source will be updated when the binding is first created, so at that least one update will always occur.

.NET Framework
Available since 2.0
Return to top