Appointment RecurrenceRule Change

[Sascha]

Hi,

I have a very special question.

Need to do this:
The user changes the "RecurrenceRule" of an appointment. Standard is, that the complete appointment series changes - the past, too. I have to identify the selected date of changing the recurrence and change the appointment from this day to all future occurences. Past must be unchanged. How can we get that?

Please see my examples attached.

I want to select Saturday 27th. Open the recurrence edit dialog. Then change the series to one hour later. Save. The result must be the same as in my screenshot. Is that possible?

Thanks for your help.

Sascha

[Dess | Tech Support Engineer, Principal]

Hello Sascha, 

Thank you for writing.  

The purpose of a recurrence rule is to affect all appointments that belong to it. In order to make an appointment differ from the common rule, you can create an exception to the MasterEvent.Exceptions collection. Additional information is available in the following help article: http://docs.telerik.com/devtools/winforms/scheduler/appointments-and-dialogs/working-with-recurring-appointments

Here is a sample code snippet for your reference: 

Appointment recurringAppointment = new Appointment(DateTime.Now.AddDays(-5),
    TimeSpan.FromHours(1.0), "Appointment Subject");
DailyRecurrenceRule rrule = new DailyRecurrenceRule(recurringAppointment.Start, 1, 10);
recurringAppointment.RecurrenceRule = rrule;
this.radScheduler1.Appointments.Add(recurringAppointment);

foreach (Appointment ev in recurringAppointment.GetOccurrences(DateTime.Today, DateTime.Today.AddDays(10)))
{

    ev.MasterEvent.Exceptions.Add(ev);
    ev.Start = ev.Start.AddHours(1);
    ev.End = ev.End.AddHours(1);
}

I hope this information helps. Should you have further questions I would be glad to help.

Regards,
Dess
Telerik by Progress