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TreeListView.NodeCanceled Event

Occurs after changes made in a node have been discarded.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v20.1.dll

Declaration

public event TreeListNodeEventHandler NodeCanceled
Public Event NodeCanceled As TreeListNodeEventHandler

Event Data

The NodeCanceled event's data class is TreeListNodeEventArgs. The following properties provide information specific to this event:

Property Description
Handled Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs.
Node Gets the processed node.
OriginalSource Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs.
RoutedEvent Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs.
Row Gets the processed row.
Source Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.

Remarks

Changes made within a node can be discarded until another node is focused. The grid automatically posts changes to its data source after the node focus has been moved to another row.

End users can discard changes made in a node by pressing ESC twice. Pressing ESC the first time closes the active editor, discarding all the changes made. The second pressing calls the IEditableObject.CancelEdit method, discarding changes (if any) made in other cells displayed within the edited node. As a result, the NodeCanceled event is raised. The processed node is returned by the TreeListNodeEventArgs.Node property.

NOTE

If the underlying data rows do not implement the IEditableObject interface, pressing ESC the second time does not discard changes.

See Also