GanttView.NewTaskDrawn Event
Occurs when an end user has drawn a new task (on MouseUp) in the Gantt area and allows you to change the newly drawn task’s end date or cancel adding a new task. 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 NewTaskDrawn event's data class is NewTaskDrawnEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Cancel | Gets or sets whether the applied changes must be canceled. |
| FinishDate | Gets or sets the newly created task’s finish date. |
| 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. |
| 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. |
| Source | Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs. |
| StartDate | Gets the newly created task’s start date. |
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 argument’s properties allow you to get the following info about the newly created (drawn) task:
| Property | Description |
|---|---|
| NewTaskDrawnEventArgs.StartDate | Gets the newly created task’s start date. |
| NewTaskDrawnEventArgs.FinishDate | Gets or sets the newly created task’s finish date. |
You can undo the applied changes by setting the NewTaskDrawnEventArgs.Cancel property to true.