AppointmentDragEventArgs.Allow Property

Specifies whether the appointment can be dragged along the time cells.

Namespace: DevExpress.XtraScheduler

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

Declaration

C#

public bool Allow { get; set; }

VB.NET

Public Property Allow As Boolean

Property Value

Type	Description
Boolean	true if appointment dragging is allowed; otherwise, false.

Remarks

To prevent the appointment from being dragged, set the Allow property to false in the SchedulerControl.AppointmentDrag event handler. On attempting to drag the appointment with a mouse, the appointment becomes disabled and the drag movement is cancelled.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the Allow 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-drag-and-relocate-the-entire-series-of-recurring-appointments-e162/CS/AppointmentDrop/Form1.cs#L31

if (e.EditedAppointment.IsRecurring)
    e.Allow = DropRecurringAppointment (e.SourceAppointment.RecurrencePattern, e.EditedAppointment.Start);
else

how-to-paint-a-special-time-area-for-an-appointment-and-interact-with-it-t246714/CS/T246714/Form1.cs#L74

DateTime safeIntervalEnd = (DateTime)apt.CustomFields["SafeIntervalEndCF"];
e.Allow = e.EditedAppointment.Start >= safeIntervalStart && e.EditedAppointment.End <= safeIntervalEnd;
drag = true;

how-to-display-a-warning-tooltip-when-dragging-an-appointment-to-forbidden-area-e1062/CS/Form1.cs#L28

    this.toolTipController1.ShowHint("Operation is cancelled");
    e.Allow = false;
}

how-to-prompt-for-conflicts-when-dropping-an-appointment-e1590/CS/Form1.cs#L19

if(MessageBox.Show("Drop Appointment","test",MessageBoxButtons.YesNo) == DialogResult.No) {
    e.Allow = false;
}

how-to-implement-drag-and-drop-between-a-legacy-scheduler-and-a-grid-e3808/CS/MainWindow.xaml.cs#L89

e.Allow = false;

VB.NET

how-to-drag-and-relocate-the-entire-series-of-recurring-appointments-e162/VB/AppointmentDrop/Form1.vb#L32

If e.EditedAppointment.IsRecurring Then
    e.Allow = DropRecurringAppointment (e.SourceAppointment.RecurrencePattern, e.EditedAppointment.Start)
Else

how-to-paint-a-special-time-area-for-an-appointment-and-interact-with-it-t246714/VB/T246714/Form1.vb#L76

Dim safeIntervalEnd As Date = DirectCast(apt.CustomFields("SafeIntervalEndCF"), Date)
e.Allow = e.EditedAppointment.Start >= safeIntervalStart AndAlso e.EditedAppointment.End <= safeIntervalEnd
drag = True

how-to-display-a-warning-tooltip-when-dragging-an-appointment-to-forbidden-area-e1062/VB/Form1.vb#L31

    Me.toolTipController1.ShowHint("Operation is cancelled")
    e.Allow = False
End If

how-to-prompt-for-conflicts-when-dropping-an-appointment-e1590/VB/Form1.vb#L21

If MessageBox.Show("Drop Appointment","test",MessageBoxButtons.YesNo) = System.Windows.Forms.DialogResult.No Then
    e.Allow = False
End If

how-to-implement-drag-and-drop-between-a-legacy-scheduler-and-a-grid-e3808/VB/MainWindow.xaml.vb#L94

e.Allow = False