SchedulerStorage.AppointmentChanging Event

Fires when an appointment‘s property is changing.

Namespace: DevExpress.Xpf.Scheduler

Assembly: DevExpress.Xpf.Scheduler.v24.2.dll

NuGet Package: DevExpress.Wpf.Scheduler

Declaration

C#

public event PersistentObjectCancelEventHandler AppointmentChanging

VB.NET

Public Event AppointmentChanging As PersistentObjectCancelEventHandler

Event Data

The AppointmentChanging event's data class is PersistentObjectCancelEventArgs. The following properties provide information specific to this event:

Property	Description
Cancel	Gets or sets whether to cancel the operation.
Object	Gets the persistent object (appointment, resource or appointment dependency) for which the event occurs. Inherited from PersistentObjectEventArgs.

Remarks

Important

You are viewing documentation for the legacy WPF Scheduler control. If you’re starting a new project, we strongly recommend that you use a new control declared in the DevExpress.Xpf.Scheduling namespace. If you decide to upgrade an existing project in order to switch to the updated scheduler control, see the Migration Guidelines document.

The AppointmentChanging event is raised when changing an appointment’s property. The appointment whose property is changed is identified by the event parameter’s PersistentObjectEventArgs.Object property. Set the PersistentObjectCancelEventArgs.Cancel to true, to roll back changes and cancel the operation.

Note

Do not modify the appointment’s data source or data binding within this event handler. It results in the current appointment being disposed of, and consequently, an unhandled exception occurs.