Opening DeleteRecurringAppointmentDialog from code

        public RadForm1()
        {
            InitializeComponent();
            DateTime startDate = DateTime.Now;
            Appointment recurringAppointment = new Appointment(startDate,
                TimeSpan.FromHours(1.0), "Appointment Subject");    
            HourlyRecurrenceRule rrule =
                new HourlyRecurrenceRule(recurringAppointment.Start, 2, 10); 
            recurringAppointment.RecurrenceRule = rrule;
            radScheduler1.Appointments.Add(recurringAppointment);
        }

        private void radButton1_Click(object sender, EventArgs e)
        { 
            SchedulerUIHelper.DeleteAppointment(this.radScheduler1.Appointments[0].Occurrences.First(), this.radScheduler1);
        }