SchedulerStorage.AppointmentInserting Event
Allows you to cancel the insertion of an appointment.
Namespace: DevExpress.Xpf.Scheduler
Assembly: DevExpress.Xpf.Scheduler.v24.2.dll
NuGet Package: DevExpress.Wpf.Scheduler
#Declaration
public event PersistentObjectCancelEventHandler AppointmentInserting
#Event Data
The AppointmentInserting 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 Persistent |
#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.
The AppointmentInserting event is raised before an appointment is added to the AppointmentCollection collection, and allows you to cancel the operation. The event parameter’s PersistentObjectEventArgs.Object property allows the processed appointment to be identified. To prevent it from being added, set the PersistentObjectCancelEventArgs.Cancel property to true.
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.
Note
The Scheduler
#Example
This example demonstrates how to use the SchedulerStorage.AppointmentInserting
event to add a timestamp to the created appointment.
To validate appointment insertion, you can get properties of the appointment being inserted by casting the e.Object parameter to the Appointment type.
using System;
using DevExpress.XtraScheduler;
// ...
private void SchedulerStorage_AppointmentInserting(object sender, PersistentObjectCancelEventArgs e) {
IAppointment apt = e.Object as IAppointment;
if (apt != null) {
apt.Description += "\r\ncreated at " + DateTime.Now.ToString();
}
}