SchedulerStorage.AppointmentChanging Event
Fires when an appointment‘s property is changing.
Namespace: DevExpress.Xpf.Scheduler
Assembly: DevExpress.Xpf.Scheduler.v20.2.dll
NuGet Packages: DevExpress.WindowsDesktop.Wpf.Scheduler, DevExpress.Wpf.Scheduler
Declaration
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.
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the AppointmentChanging event.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.