AppointmentItem.QueryEnd Property

Gets the normalized appointment end value which is recommended for use in interval-based appointment data source queries.

Namespace: DevExpress.Xpf.Scheduling

Assembly: DevExpress.Xpf.Scheduling.v18.2.dll

Declaration

C#

public DateTime QueryEnd { get; }

VB.NET

Public ReadOnly Property QueryEnd As Date

Property Value

Type	Description
DateTime	A DateTime value that is the end of the appointment.

Remarks

The AppointmentItem.QueryStart and AppointmentItem.QueryEnd properties allow you to calculate the correct interval for use in a SELECT query when handling the SchedulerControl.VisibleIntervalsChanged event to fetch appointments from the data source. The use of the AppointmentItem.Start and AppointmentItem.End properties is not recommended in this situation, because you can miss the appointment pattern and lose appointment exceptions.

The QueryEnd property return values are dependent on the appointment type, as shown in the following table.

Appointment Type	QueryEnd Value
AppointmentType.Normal	The AppointmentItem.End value.
AppointmentType.Pattern	The End value of the last appointment in the recurring series. If the series is infinite (no end date), the DateTime.MaxValue is returned.
AppointmentType.ChangedOccurrence	The End value of an original occurrence before modification (as if an occurrence is restored from the exception).
AppointmentType.DeletedOccurrence	The End value of an original occurrence before modification (as if an occurrence is restored from the exception).