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   [Expand]ActiveViewChangingEventArgs Class
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    [Expand]ASPxSchedulerStorage Methods
   [Expand]ASPxSchedulerStorageControl Class
   [Expand]ASPxSchedulerStyles Class
   [Expand]ASPxSchedulerTimeCellPreparedEventArgs Class
    ASPxSchedulerTimeCellPreparedEventHandler Delegate
   [Expand]ASPxTimelineViewAppointmentDisplayOptions Class
   [Expand]ASPxTimeZoneEdit Class
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   [Expand]ASPxViewVisibleInterval Class
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   [Expand]ASPxWeekViewAppointmentDisplayOptions Class
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   [Expand]BottomLeftCornerStyle Class
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   [Expand]ClientSideAppointmentFieldNames Class
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 End-User Documentation
ASP.NET Controls and MVC Extensions > DevExpress.Web.ASPxScheduler > ASPxSchedulerStorage > AppointmentChanging

ASPxSchedulerStorage.AppointmentChanging Event

Fires when an appointment's property is about to change.

Namespace:DevExpress.Web.ASPxScheduler
Assembly:DevExpress.Web.ASPxScheduler.v18.1.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type PersistentObjectCancelEventArgs containing data related to this event.

The following PersistentObjectCancelEventArgs properties provide information specific to this event.
Property Description
Cancel Gets or sets whether to cancel the operation.

Expanded Remarks

The AppointmentChanging event is raised when changing an appointment's property. The appointment whose property is changed is identified by the event parameter's DevExpress.XtraScheduler.PersistentObjectEventArgs.Object property. Set the DevExpress.XtraScheduler.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.

Expanded See Also

ASPxSchedulerStorage Class
ASPxSchedulerStorage Members
DevExpress.Web.ASPxScheduler Namespace
ASPxSchedulerDataWebControlBase.AppointmentChanging
Appointments
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