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GanttView.PredecessorLinkEditCanceled Event

Occurs when the connector editing was canceled. This is a routed event.

Namespace: DevExpress.Xpf.Gantt

Assembly: DevExpress.Xpf.Gantt.v24.1.dll

NuGet Package: DevExpress.Wpf.Gantt

Declaration

public event EventHandler<PredecessorLinkEditCanceledEventArgs> PredecessorLinkEditCanceled

Event Data

The PredecessorLinkEditCanceled event's data class is PredecessorLinkEditCanceledEventArgs. 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.
LinkType Gets the type of the edited link.
OriginalSource Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs.
Predecessor Gets the predecessor task that is linked to the successor task after the canceled connector editing.
PredecessorLink Gets an edited predecessor link (connector).
RoutedEvent Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs.
Source Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.
Successor Gets the successor task that is linked to the predecessor task after the canceled connector editing.

The event data class exposes the following methods:

Method Description
InvokeEventHandler(Delegate, Object) When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs.
OnSetSource(Object) When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs.

Remarks

The PredecessorLinkEditCanceled event occurs when the connector editing was canceled for the following reasons:

  • end user pressed ESC
  • GanttControl’s owner window lost its focus
  • end user dragged th edited connector and released the mouse (MouseUp occurred) outside the connector thumb or connector remove zone.

If creating a new connector was canceled, the following event argument’s properties return null:

Use the event argument’s PredecessorLinkEditCanceledEventArgs.Predecessor property get the edited connector’s predecessor.

See Also