[Solved] how to avoid a recurrence rule for a particular date

[Nagesh Mynedi]

how to avoid a recurrence rule for a particular date for example the recurrence rule is from Jan 1st to Jan 30 but i don't want the recurrence to be visible on some days like 15th Jan and 20 Jan

[Peter]

Hi Nagesh,

You can store the exception dates in a custom attribute. Then you can handle AppointmentInsert to parst the custom attribute value and to overwrite the recurrence rule:

<telerik:RadScheduler ID="RadScheduler1" CustomAttributeNames="ExceptionDates(yyyy/MM/dd)"
       EnableCustomAttributeEditing="true" runat="server"
       onappointmentdatabound="RadScheduler1_AppointmentDataBound"
       onappointmentinsert="RadScheduler1_AppointmentInsert" >
      </telerik:RadScheduler>

protected void RadScheduler1_AppointmentInsert(object sender, SchedulerCancelEventArgs e)
    {
        if (e.Appointment.RecurrenceRule != String.Empty)
        {
            RecurrenceRule parsedRule;
            RecurrenceRule.TryParse(e.Appointment.RecurrenceRule.ToString(), out parsedRule);
            List<DateTime> ExceptionsList = new List<DateTime>();
            if (e.Appointment.Attributes["ExceptionDates(yyyy/MM/dd)"] != null)
            {
                foreach (string exceptionDateString in e.Appointment.Attributes["ExceptionDates(yyyy/MM/dd)"].Split(';'))
                {
                    DateTime exceptionTime = DateTime.Parse(exceptionDateString);
                    exceptionTime = exceptionTime.ToLocalTime();
                    exceptionTime = exceptionTime.AddHours(e.Appointment.Start.Hour);
                    exceptionTime = exceptionTime.AddMinutes(e.Appointment.Start.Minute);
                    ExceptionsList.Add(exceptionTime);
                }
            }
            parsedRule.Exceptions = ExceptionsList;
            e.Appointment.RecurrenceRule = parsedRule.ToString();
        }
    }

For example, for dates 15th Jan and 20 Jan, you should type in the ExceptionDates textbox the following:

"2010/01/15;2010/01/20"

If you need to create exception dates for already existing recurring appointments, simply move the above logic from AppointmentInsert to AppointmentDataBound.




All the best,
Peter
the Telerik team

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