AppointmentCancelEventArgs.Cancel Property

Gets or sets whether the operation performed on the processed event should be cancelled.

Namespace: DevExpress.XtraScheduler

Assembly: DevExpress.XtraScheduler.v19.1.Core.dll

Declaration

C#

public bool Cancel { get; set; }

VB.NET

Public Property Cancel As Boolean

Property Value

Type	Description
Boolean	true to cancel the operation performed on the event; otherwise, false.

Remarks

Set the Cancel property to true to cancel the processing of an event.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the Cancel property.

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.

C#

how-to-implement-two-way-synchronization-between-scheduler-and-outlook-calendars-t423510/CS/SyncWithOutlook/OutlookSynchronizerHelper.cs#L128

case SynchronizeOperation.Create:
    eventArgs.Cancel = eventArgs.OutlookAppointment != null && deletedAppointments.Contains(eventArgs.OutlookAppointment.EntryID);
    break;

how-to-implement-multi-user-synchronization-with-microsoft-outlook-e39/CS/MainForm.cs#L126

if (GetOutlookAppointmentUserId(args.OutlookAppointment) != UserID) {
    e.Cancel = true;
    return;

how-to-export-import-appointments-to-from-ms-outlook-calendar-t297633/CS/OutlookExportImportSample/Form1.cs#L68

if (e.Appointment.IsRecurring) {
    e.Cancel = true;
    AddToLog("Cancelled because of its type (recurring).");

how-to-synchronize-appointments-with-outlook-in-a-multi-user-application-e699/CS/MainForm.cs#L90

if (GetOutlookAppointmentUserId(args.OutlookAppointment) != UserID) {
    e.Cancel = true;
    return;

how-to-export-appointments-with-custom-fields-to-vcalendar-format-e638/CS/VCalendarCustomFields/Form1.cs#L97

if (apt.Start.Hour < 8 || apt.Start.Hour > 17) {
    args.Cancel = true;
    return;

VB.NET

how-to-implement-two-way-synchronization-between-scheduler-and-outlook-calendars-t423510/VB/SyncWithOutlook/OutlookSynchronizerHelper.vb#L167

Case SynchronizeOperation.Create
    eventArgs.Cancel = eventArgs.OutlookAppointment IsNot Nothing AndAlso deletedAppointments.Contains(eventArgs.OutlookAppointment.EntryID)
Case SynchronizeOperation.Delete

how-to-implement-multi-user-synchronization-with-microsoft-outlook-e39/VB/MainForm.vb#L127

If GetOutlookAppointmentUserId(args.OutlookAppointment) <> UserID Then
    e.Cancel = True
    Return

how-to-export-import-appointments-to-from-ms-outlook-calendar-t297633/VB/OutlookExportImportSample/Form1.vb#L70

If e.Appointment.IsRecurring Then
    e.Cancel = True
    AddToLog("Cancelled because of its type (recurring).")

how-to-synchronize-appointments-with-outlook-in-a-multi-user-application-e699/VB/MainForm.vb#L93

If GetOutlookAppointmentUserId(args.OutlookAppointment) <> UserID Then
    e.Cancel = True
    Return

how-to-export-appointments-with-custom-fields-to-vcalendar-format-e638/VB/VCalendarCustomFields/Form1.vb#L103

If apt.Start.Hour < 8 OrElse apt.Start.Hour > 17 Then
    args.Cancel = True
    Return