GanttView.PredecessorLinkEdited Event
Occurs when an end user has finished editing a predecessor link (connector), and allows you to cancel the link editing. This is a routed event.
Namespace: DevExpress.Xpf.Gantt
Assembly: DevExpress.Xpf.Gantt.v24.2.dll
NuGet Package: DevExpress.Wpf.Gantt
Declaration
Event Data
The PredecessorLinkEdited event's data class is PredecessorLinkEditedEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Cancel | Gets or sets whether the applied changes must be canceled. |
| ChangeType | Gets a type of change an end user made (created, deleted, or changed a predecessor link). |
| 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. |
| OldSuccessor | Gets the successor task that was linked to the predecessor task before editing the connector. |
| 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 a predecessor task. |
| 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 editing the connector. |
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 event arguments properties allow you to get the following info about the edited predecessor link (connector):
| Property | Description |
|---|---|
| PredecessorLinkEditedEventArgs.OldSuccessor | Gets the successor task that was linked to the predecessor task before editing the connector. |
| PredecessorLinkEditedEventArgs.Successor | Gets the successor task that is linked to the predecessor task after editing the connector. |
| PredecessorLinkEditedEventArgs.Predecessor | Gets a predecessor task. |
| PredecessorLinkEditedEventArgs.PredecessorLink | Gets an edited predecessor link (connector). |
| PredecessorLinkEditedEventArgs.LinkType | Gets the type of the edited link. |
| PredecessorLinkEditedEventArgs.ChangeType | Gets a type of change an end user made (created, deleted, or changed a predecessor link). |
You can undo the applied changes by setting the PredecessorLinkEditedEventArgs.Cancel property to true.