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  [Expand]DevExpress.Data.Linq
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  [Expand]DevExpress.Web.ASPxGauges
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  [Collapse]DevExpress.Web.ASPxScheduler
   [Expand]ActiveViewChangingEventArgs Class
    ActiveViewChangingEventHandler Delegate
   [Expand]AgendaAppointmentCellStyle Class
   [Expand]AgendaAppointmentStyles Class
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   [Expand]AgendaStylesBase Class
   [Expand]AgendaTodayHorizontalDateHeaderStyles Class
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   [Expand]AgendaView Class
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   [Expand]AgendaViewTemplates Class
    AppointmentDatesHighlightMode Enumeration
   [Expand]AppointmentDialogLayoutSettings Class
   [Expand]AppointmentFormBaseEventArgs Class
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   [Expand]AppointmentFormTemplateContainer Class
   [Expand]AppointmentFormTemplateContainerBase Class
   [Expand]AppointmentImages Class
   [Expand]AppointmentImagesEventArgs Class
    AppointmentImagesEventHandler Delegate
   [Expand]AppointmentInplaceEditorEventArgs Class
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   [Expand]AppointmentInplaceEditorTemplateContainer Class
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    AppointmentSelectionAppearanceMode Enumeration
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   [Expand]AppointmentStatusCollection Class
   [Expand]AppointmentTemplateContainer Class
    AppointmentToolTipMode Enumeration
   [Expand]AppointmentViewInfoCustomizingEventArgs Class
    AppointmentViewInfoCustomizingEventHandler Delegate
   [Expand]ASPxAgendaViewAppointmentDisplayOptions Class
   [Expand]ASPxAppointmentCustomFieldMapping Class
   [Expand]ASPxAppointmentCustomFieldMappingCollection Class
   [Expand]ASPxAppointmentMappingInfo Class
   [Expand]ASPxAppointmentStorage Class
   [Expand]ASPxDateNavigator Class
   [Expand]ASPxDayViewAppointmentDisplayOptions Class
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   [Expand]ASPxResourceCustomFieldMapping Class
   [Expand]ASPxResourceCustomFieldMappingCollection Class
   [Expand]ASPxResourceMappingInfo Class
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   [Expand]ASPxScheduler Class
    ASPxSchedulerChangeAction Enumeration
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   [Expand]ASPxSchedulerDataWebControlBase Class
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   [Expand]ASPxSchedulerPopupForm Class
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   [Expand]ASPxSchedulerRelatedControl Class
   [Expand]ASPxSchedulerRelatedControlBase Class
   [Expand]ASPxSchedulerResourceHeaderOptions Class
   [Collapse]ASPxSchedulerStorage Class
     ASPxSchedulerStorage Members
    [Expand]ASPxSchedulerStorage Constructor
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    [Collapse]ASPxSchedulerStorage Events
      AppointmentChanging Event
      AppointmentCollectionAutoReloading Event
      AppointmentCollectionCleared Event
      AppointmentCollectionLoaded Event
      AppointmentDeleting Event
      AppointmentDependenciesChanged Event
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      AppointmentDependencyCollectionAutoReloading Event
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      AppointmentDependencyCollectionLoaded Event
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      AppointmentDependencyInserting Event
      AppointmentInserting Event
      AppointmentRowDeleted Event
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      FetchAppointments Event
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    [Expand]ASPxSchedulerStorage Methods
   [Expand]ASPxSchedulerStorageControl Class
   [Expand]ASPxSchedulerStyles Class
   [Expand]ASPxSchedulerTimeCellPreparedEventArgs Class
    ASPxSchedulerTimeCellPreparedEventHandler Delegate
   [Expand]ASPxTimelineViewAppointmentDisplayOptions Class
   [Expand]ASPxTimeZoneEdit Class
   [Expand]ASPxViewNavigator Class
   [Expand]ASPxViewSelector Class
   [Expand]ASPxViewSelectorOptionsAdaptivity Class
   [Expand]ASPxViewVisibleInterval Class
   [Expand]ASPxViewVisibleIntervalOptionsAdaptivity Class
   [Expand]ASPxWeekViewAppointmentDisplayOptions Class
    AutoHeightMode Enumeration
   [Expand]BottomLeftCornerStyle Class
   [Expand]CellBodyStyle Class
   [Expand]ClientSideAppointmentFieldNames Class
   [Expand]ClockImages Class
   [Expand]CustomizeElementStyleEventArgs Class
    CustomizeElementStyleEventHandler Delegate
   [Expand]DateNavigatorClientSideEvents Class
   [Expand]DateNavigatorProperties Class
   [Expand]DayView Class
   [Expand]DayViewStyles Class
   [Expand]DayViewTemplates Class
   [Expand]FABCreateAppointmentAction Class
   [Expand]FABCreateAppointmentActionGroup Class
   [Expand]FABCreateAppointmentActionItem Class
   [Expand]FABCreateRecurringAppointmentActionItem Class
   [Expand]FABDeleteAppointmentActionItem Class
   [Expand]FABEditAppointmentActionGroup Class
   [Expand]FABEditAppointmentActionItem Class
   [Expand]FullWeekView Class
   [Expand]FullWeekViewStyles Class
   [Expand]GotoDateDialogLayoutSettings Class
   [Expand]GotoDateFormEventArgs Class
    GotoDateFormEventHandler Delegate
   [Expand]GotoDateFormTemplateContainer Class
   [Expand]HeaderStyle Class
   [Expand]InitClientAppointmentEventArgs Class
    InitClientAppointmentHandler Delegate
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    PopupMenuShowingEventHandler Delegate
   [Expand]PreparePopupMenuEventArgs Class
    PreparePopupMenuEventHandler Delegate
   [Expand]RecurrenceDialogLayoutSettings Class
   [Expand]RecurrentAppointmentDeleteDialogLayoutSettings Class
   [Expand]RecurrentAppointmentEditDialogLayoutSettings Class
   [Expand]ReminderDialogLayoutSettings Class
    ResourceColorFillArea Enumeration
   [Expand]ResourceNavigator Class
    ResourceNavigatorMode Enumeration
   [Expand]ResourceNavigatorPagerProperties Class
   [Expand]ResourceNavigatorProperties Class
   [Expand]ResourceNavigatorTokensProperties Class
   [Expand]SchedulerCallbackCommandEventArgs Class
    SchedulerCallbackCommandEventHandler Delegate
   [Expand]SchedulerCallbackCommandId Class
   [Expand]SchedulerClientSideEvents Class
   [Expand]SchedulerCustomShortcutCollection Class
   [Expand]SchedulerFABActionItem Class
    SchedulerFormAction Enumeration
   [Expand]SchedulerFormEditorsImages Class
   [Expand]SchedulerFormEventArgs Class
   [Expand]SchedulerFormTemplateContainer Class
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   [Expand]SchedulerShortcut Class
   [Expand]SchedulerShortcutCommands Class
   [Expand]SchedulerStorageClientSideEvents Class
   [Expand]SchedulerTemplates Class
   [Expand]SchedulerViewBase Class
   [Expand]SchedulerViewRepository Class
   [Expand]SelectionBarStyle Class
   [Expand]TimeIndicatorDisplayOptions Class
   [Expand]TimelineView Class
   [Expand]TimelineViewStyles Class
    ToolTipCornerType Enumeration
    ViewVisibleIntervalRenderMode Enumeration
    WebElementType Enumeration
   [Expand]WeekView Class
   [Expand]WeekViewStyles Class
   [Expand]WorkWeekView Class
   [Expand]WorkWeekViewStyles Class
  [Expand]DevExpress.Web.ASPxScheduler.Commands
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 End-User Documentation
ASP.NET Controls and MVC Extensions > DevExpress.Web.ASPxScheduler > ASPxSchedulerStorage > AppointmentChanging
View this topic on docs.devexpress.com (Learn more)

ASPxSchedulerStorage.AppointmentChanging Event

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

Namespace:DevExpress.Web.ASPxScheduler
Assembly:DevExpress.Web.ASPxScheduler.v18.2.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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