GanttView.PredecessorLinkEditCanceled Event
Occurs when the connector editing was canceled. This is a routed event.
Namespace: DevExpress.Xpf.Gantt
Assembly: DevExpress.Xpf.Gantt.v21.2.dll
NuGet Package: DevExpress.Wpf.Gantt
Declaration
public event EventHandler<PredecessorLinkEditCanceledEventArgs> PredecessorLinkEditCanceledEvent 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:
- PredecessorLinkEditCanceledEventArgs.Successor
- PredecessorLinkEditCanceledEventArgs.PredecessorLink
- PredecessorLinkEditCanceledEventArgs.LinkType
Use the event argument’s PredecessorLinkEditCanceledEventArgs.Predecessor property get the edited connector’s predecessor.