Thanks Brian, i Put isRemoved property= true and it is deleting recurrence from Calendar but its not getting Update into database so on the next reload it will again display the old appointment recurrence. yes isremoved property will remove but i am just stuck how to get that byte value of recurrence so that i can update in my own database. Can you please help me, what to do now

Thanks

Thanks Brian, i also did the same but still not able to delete, in most of the forum you told set

Isremoved property to true.

my Sample Code is below which is almost same in the infragistic sample my concern is do i need to do something with database so that i can see the effect. earlier it will load appointment from database and fill in the calender.

If yes what to do , please help me

     case "Delete":
                    {
                        DialogResult result = DialogResult.None;
                        Appointment appointmentToDelete = this.initialAppointment;

                            if (this.initialAppointment.RecurringAppointmentRoot != null)
                            {
                                RecurrenceEditTypeDialog dialog = new RecurrenceEditTypeDialog(appointmentToDelete, RecurrenceEditTypeDialogType.Delete);
                                dialog.ShowDialog(this);
                                RecurrenceEditTypeDialogResult recurrenceResult = dialog.Result;

                                switch (recurrenceResult)
                                {
                                    //    If the user canceled, don't delete anything.
                                    case RecurrenceEditTypeDialogResult.Cancel:
                                        {
                                            return;
                                        }

                                    case RecurrenceEditTypeDialogResult.Series:
                                        {
                                            this._CurrentCalendarInfo.Appointments.Remove(this.initialAppointment.RecurringAppointmentRoot);

                                            this.IsModified = false;
                                            this.Close();
                                        }
                                        break;

                                    case RecurrenceEditTypeDialogResult.Occurrence:
                                        {
                                            result = MessageBox.Show(this, OutlookAppointmentDialog.CONFIRM_DIALOG_CAPTION, OutlookAppointmentDialog.APP_TITLE, MessageBoxButtons.YesNo);

                                            if (result == DialogResult.Yes)
                                            {
                                                this.initialAppointment.IsRemoved = true;
                                                this.IsModified = false;
                                                this.Close();
                                            }
                                        }
                                        break;
                                }