How to: Export Appointment as a Meeting Request with Attendees

using DevExpress.XtraScheduler.iCalendar;
using DevExpress.XtraScheduler;
using DevExpress.XtraScheduler.iCalendar.Components;

        void ExportAppointments(Stream stream) {
            if (stream == null)
                return;
            iCalendarExporter exporter = new iCalendarExporter(schedulerStorage1);
            exporter.AppointmentExporting += 
                new AppointmentExportingEventHandler(exporter_AppointmentExporting);
            exporter.Export(stream);
        }
        void exporter_AppointmentExporting(object sender, AppointmentExportingEventArgs e) {
            string s = Convert.ToString(e.Appointment.CustomFields[RecipientsDataColumn]);
            string[] attendees = s.Split(';');

            iCalendarAppointmentExportingEventArgs args = e as iCalendarAppointmentExportingEventArgs;
            AddEventAttendees(args.VEvent, attendees);
        }
        private void AddEventAttendees(VEvent ev, string[] addresses) {
            int count = addresses.Length;
            for (int i = 0; i < count; i++)
                AddEventAttendee(ev, addresses[i]);
        }
        private void AddEventAttendee(VEvent ev, string address) {
            TextProperty p = new TextProperty("ATTENDEE", 
                String.Format("mailto:{0}", address));
            p.AddParameter("CN", address);
            p.AddParameter("RSVP", "TRUE");
            ev.CustomProperties.Add(p);
        }

Imports DevExpress.XtraScheduler.iCalendar
Imports DevExpress.XtraScheduler
Imports DevExpress.XtraScheduler.iCalendar.Components

        Private Sub ExportAppointments(ByVal stream As Stream)
            If stream Is Nothing Then
                Return
            End If
            Dim exporter As New iCalendarExporter(schedulerStorage1)
            AddHandler exporter.AppointmentExporting, AddressOf exporter_AppointmentExporting
            exporter.Export(stream)
        End Sub
        Private Sub exporter_AppointmentExporting(ByVal sender As Object, ByVal e As AppointmentExportingEventArgs)
            Dim s As String = Convert.ToString(e.Appointment.CustomFields(RecipientsDataColumn))
            Dim attendees() As String = s.Split(";"c)

            Dim args As iCalendarAppointmentExportingEventArgs = TryCast(e, iCalendarAppointmentExportingEventArgs)
            AddEventAttendees(args.VEvent, attendees)
        End Sub
        Private Sub AddEventAttendees(ByVal ev As VEvent, ByVal addresses() As String)
            Dim count As Integer = addresses.Length
            For i As Integer = 0 To count - 1
                AddEventAttendee(ev, addresses(i))
            Next i
        End Sub
        Private Sub AddEventAttendee(ByVal ev As VEvent, ByVal address As String)
            Dim p As New TextProperty("ATTENDEE", String.Format("mailto:{0}", address))
            p.AddParameter("CN", address)
            p.AddParameter("RSVP", "TRUE")
            ev.CustomProperties.Add(p)
        End Sub