c#.net meeting request cancellation

[Karan_TN]

I am coding with C#.NET I created an meeting request and attached to the mail. users able to open it and accept the same. On another scenario, i want to decline the request. so i send an FRESH meeting request attached to the mail with same date & time. this time meeting request is not getting cancelled. So my question is, do the UID need to be unique to cancel the meeting request?

[F ES Sitecore]

We don't know how you are implementing "meetings" so how can we possibly know?

[Karan_TN]

This is my code :

    DateTime schBeginDate = TimeZoneInfo.ConvertTimeToUtc(Convert.ToDateTime(Convert.ToDateTime("21/08/2015").ToString("dd-MMM-yyyy") + " 12:00 AM"));
    DateTime schEndDate = TimeZoneInfo.ConvertTimeToUtc(Convert.ToDateTime(Convert.ToDateTime("21/08/2015").ToString("dd-MMM-yyyy") + " 11:59 PM"));        

String[] contents = { "BEGIN:VCALENDAR","VERSION:2.0","PRODID:-//TEST","METHOD:REQUEST",
"BEGIN:VEVENT",
string.Format("DTSTART:{0:yyyyMMddTHHmmssZ}", schBeginDate),
string.Format("DTSTAMP:{0:yyyyMMddTHHmmssZ}", DateTime.UtcNow),
string.Format("DTEND:{0:yyyyMMddTHHmmssZ}", schEndDate),
"LOCATION:NA", "UID : " + Guid.NewGuid(),
"DESCRIPTION:Out Of Office",
"X-ALT-DESC;FMTTYPE=text/html:Out Of Office",
"SUMMARY:Out Of Office", "STATUS:CONFIRMED","ORGANIZER:MAILTO:" + "test@test.com",
string.Format("ATTENDEE;CN=\"{0}\";RSVP=TRUE:mailto:{1}", "test", "test@test.com"),
"BEGIN:VALARM","TRIGGER:-PT15M",
"ACTION:DISPLAY","DESCRIPTION:Reminder","X-MICROSOFT-CDO-BUSYSTATUS:OOF","END:VALARM",
"END:VEVENT", "END:VCALENDAR" };

[Blikkies]

I did not try it myself but what I have read before, to able to cancel a meeting request the Method attribute must be Cancel and the UID must be the same as the original request.

[Karan_TN]

Thanks a lot for your reply. So i conclude that UID should be same to cancel meeting request. If any deviation, please give me an reply. Once again thanks.