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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.v24.1.dll

NuGet Package: DevExpress.Wpf.Gantt

Declaration

public event EventHandler<NewTaskDrawnEventArgs> NewTaskDrawn

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.

See Also