GanttView.BeginNewTaskDraw Event

Occurs when an end user starts drawing a new task (on MouseDown ) and allows you to change the created task’s start date. This is a routed event.

Namespace : DevExpress.Xpf.Gantt

Assembly : DevExpress.Xpf.Gantt.v25.2.dll

NuGet Package : DevExpress.Wpf.Gantt

Declaration

csharp

public event EventHandler<BeginNewTaskDrawEventArgs> BeginNewTaskDraw

Public Event BeginNewTaskDraw As EventHandler(Of BeginNewTaskDrawEventArgs)

The BeginNewTaskDraw event's data class is BeginNewTaskDrawEventArgs. 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.
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 or sets 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.

Use the event arguments’ BeginNewTaskDrawEventArgs.StartDate property to change the start date of the newly created task.