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.v25.2.dll

NuGet Package : DevExpress.Wpf.Gantt

csharp

public event EventHandler<NewTaskDrawnEventArgs> NewTaskDrawn

Public Event NewTaskDrawn As EventHandler(Of NewTaskDrawnEventArgs)

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.