AppointmentModificationControllerBase.ValidateInterval(DateTime, TimeSpan, DateTime, TimeSpan) Method

Checks whether the specified date and time values produce the valid time interval.

Namespace: DevExpress.XtraScheduler.Native

Assembly: DevExpress.XtraScheduler.v23.2.Core.Desktop.dll

NuGet Package: DevExpress.Scheduler.CoreDesktop

Declaration

C#

public static bool ValidateInterval(
    DateTime startDate,
    TimeSpan startTime,
    DateTime endDate,
    TimeSpan endTime
)

VB.NET

Public Shared Function ValidateInterval(
    startDate As Date,
    startTime As TimeSpan,
    endDate As Date,
    endTime As TimeSpan
) As Boolean

Parameters

Name	Type	Description
startDate	DateTime	A DateTime value, representing the date component of the interval’s start.
startTime	TimeSpan	A TimeSpan value, representing the time component of the interval’s start.
endDate	DateTime	A DateTime value, representing the date component of the interval’s end.
endTime	TimeSpan	A DateTime value, representing the time component of the interval’s end.

Returns

Type	Description
Boolean	True if the time interval is valid; otherwise, false.

Remarks

The time interval is valid if its end follows its start.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the ValidateInterval(DateTime, TimeSpan, DateTime, TimeSpan) method.

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#

winforms-scheduler-localizer-translate-ui/CS/SchedulerLocalizerExample/OutlookAppointmentForm.cs#L299

protected internal virtual void OnEdtEndDateInvalidValue(object sender, InvalidValueExceptionEventArgs e) {
    if (!AppointmentFormControllerBase.ValidateInterval(edtStartDate.DateTime.Date, edtStartTime.Time.TimeOfDay, edtEndDate.DateTime.Date, edtEndTime.Time.TimeOfDay))
        e.ErrorText = SchedulerLocalizer.GetString(SchedulerStringId.Msg_InvalidEndDate);

winforms-scheduler-custom-appointment-edit-form/CS/SchedulerDbExample/CustomAppointmentForm.cs#L282

protected internal virtual bool IsValidInterval() {
    return AppointmentFormControllerBase.ValidateInterval(edtStartDate.DateTime.Date, edtStartTime.Time.TimeOfDay, edtEndDate.DateTime.Date, edtEndTime.Time.TimeOfDay);
}

VB.NET

winforms-scheduler-localizer-translate-ui/VB/SchedulerLocalizationExample_VB/OutlookAppointmentForm.vb#L331

Protected Friend Overridable Sub OnEdtEndDateInvalidValue(sender As Object, e As InvalidValueExceptionEventArgs)
    If Not AppointmentFormControllerBase.ValidateInterval(edtStartDate.DateTime.[Date], edtStartTime.Time.TimeOfDay, edtEndDate.DateTime.[Date], edtEndTime.Time.TimeOfDay) Then
        e.ErrorText = SchedulerLocalizer.GetString(SchedulerStringId.Msg_InvalidEndDate)

winforms-scheduler-custom-appointment-edit-form/VB/SchedulerDbExample/CustomAppointmentForm.vb#L344

Protected Friend Overridable Function IsValidInterval() As Boolean
    Return AppointmentFormControllerBase.ValidateInterval(edtStartDate.DateTime.Date, edtStartTime.Time.TimeOfDay, edtEndDate.DateTime.Date, edtEndTime.Time.TimeOfDay)
End Function