Add Attendee in Google Calendar Event - asp.net

Question

i am developing my app on google calendar integration. I got the error "Object Not initialized" when i am adding attendee to the EventAttendee object. Please review the code below...
Event Entry = new Event();
Entry.Summary = MeetingName;
Entry.Description = MeetingDetails;
EventDateTime dt_Start = new EventDateTime();
dt_Start.DateTime = meeting.StartTime.ToString("yyyy-MM-ddThh:mm:ss.000Z");
Entry.Start = dt_Start;
EventDateTime dt_End = new EventDateTime();
dt_End.DateTime = meeting.EndTime.ToString("yyyy-MM-ddThh:mm:ss.000Z");
Entry.End = dt_End;
if (invitees != null)
{
foreach (Participant invitee in invitees)
{
String str = invitee.Email;
str = invitee.Name;
Entry.Attendees.Add(new EventAttendee()
{
Email = invitee.Email,
DisplayName = WEB.HttpUtility.HtmlDecode(invitee.Name),
ResponseStatus = "accepted",
Organizer=false,
Resource=false
});
}
}
place where i am doing "Entry.Attendees.Add(new EventAttendee()" at this point i am getting the error...

Answer 1

I think you need to instantiate the list of EventAttendees first.
Try adding this after you create the entry-
Entry.Attendees = new List<EventAttendee>();
Then you could try this to add them-
var att = new EventAttendee()
{
DisplayName = "Bill Smith",
Email = "emailsmith#smith.test",
Organizer = false,
Resource = false,
};
Entry.Attendees.Add(att);

Answer 2

You should not be setting anything other than the email address for the attendee. The response status is for the attendee to set (why would you be able to accept a meeting for me that you created?) and the Organizer and Resource attributes are set by Google. It may be possible to set a DisplayName but it is not mandatory.