Send outlook meeting request with multiple dates in c#

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C#

Outlook

i am having requirement to send the outlook meeting request. I did that & its working fine for single date. But the meeting should contains multiple dates. I am using Vcalendar please refer the following code .

Please give me ur suggestion

SmtpClient sc = new SmtpClient();
  MailMessage msg = new MailMessage();
   StringBuilder str = new StringBuilder();
                  str.AppendLine("BEGIN:VCALENDAR");
                  str.AppendLine("VERSION:2.0");
                  str.AppendLine("METHOD:REQUEST");
                  str.AppendLine("BEGIN:VEVENT");
                  str.AppendLine(string.Format("DTSTART:{0:yyyyMMddTHHmmssZ}", DateTime.Now));
                  str.AppendLine(string.Format("DTSTAMP:{0:yyyyMMddTHHmmssZ}", DateTime.UtcNow));
                  str.AppendLine(string.Format("DTEND:{0:yyyyMMddTHHmmssZ}", DateTime.Now.AddDays(1)));
                  str.AppendLine("LOCATION: India");
                  str.AppendLine(string.Format("UID:{0}", Guid.NewGuid()));
                  str.AppendLine(string.Format("DESCRIPTION:{0}", msg.Body));
                  str.AppendLine(string.Format("X-ALT-DESC;FMTTYPE=text/html:{0}", msg.Body));
                  str.AppendLine(string.Format("SUMMARY:{0}", msg.Subject));
                  str.AppendLine(string.Format("ORGANIZER:MAILTO:{0}", msg.From.Address));
                  str.AppendLine(string.Format("ATTENDEE;CN=\"{0}\";RSVP=TRUE:mailto:{1}", msg.To[0].DisplayName, msg.To[0].Address));
                  str.AppendLine("BEGIN:VALARM");
                  str.AppendLine("TRIGGER:-PT15M");
                  str.AppendLine("ACTION:DISPLAY");
                  str.AppendLine("DESCRIPTION:Reminder");
                  str.AppendLine("END:VALARM");
                  str.AppendLine("END:VEVENT");
                  str.AppendLine("END:VCALENDAR");
                  System.Net.Mime.ContentType ct = new System.Net.Mime.ContentType("text/calendar");
                  ct.Parameters.Add("method", "REQUEST");
                  AlternateView avCal = AlternateView.CreateAlternateViewFromString(str.ToString(), ct);
                  msg.AlternateViews.Add(avCal);
                  sc.Send(msg);