Assigning attendees and resources to events

Several calendar components can have attendees and resources.

Working with Attendees

Here is a short example demonstrating how to add an Attendee to an Event:

var now = DateTime.Now;
var later = now.AddHours(1);

var e = new CalendarEvent
{
    Start = new CalDateTime(now),
    End = new CalDateTime(later),
};

var attendee = new Attendee
{
    CommonName = "Rian Stockbower",
    Rsvp = true,
    Value = new Uri("mailto:rstockbower@gmail.com")
};
e.Attendees = new List<IAttendee> {attendee};


var calendar = new Calendar();
calendar.Events.Add(e);

var serializer = new CalendarSerializer();
var icalString = serializer.SerializeToString(calendar);
Console.WriteLine(icalString);

Output:

BEGIN:VCALENDAR
PRODID:-//github.com/rianjs/ical.net//NONSGML ical.net 4.0//EN
VERSION:4.0
BEGIN:VEVENT
ATTENDEE;CN=Rian Stockbower;RSVP=TRUE:mailto:rstockbower@gmail.com
DTEND:20160829T113706
DTSTAMP:20160829T143706Z
DTSTART:20160829T103706
SEQUENCE:0
UID:5489af48-6ccb-4ad6-aa33-39db4d549c49
END:VEVENT
END:VCALENDAR

Working with resources

Resources are just strings; they're often used to represent projectors, rooms, and other resources. Working with strings is much simpler than working with Attendees.

var now = DateTime.Now;
var later = now.AddHours(1);

var e = new CalendarEvent
{
    Start = new CalDateTime(now),
    End = new CalDateTime(later),
};

e.Resources = new HashSet<string>
{
    "Projector",
    "Room A",
    "DVD player",
    "Photoshop license A"
};

var calendar = new Calendar();
calendar.Events.Add(e);

var serializer = new CalendarSerializer();
var icalString = serializer.SerializeToString(calendar);
Console.WriteLine(icalString);

Output:

BEGIN:VCALENDAR
PRODID:-//github.com/rianjs/ical.net//NONSGML ical.net 4.0//EN
VERSION:4.0
BEGIN:VEVENT
DTEND:20160829T113956
DTSTAMP:20160829T143956Z
DTSTART:20160829T103956
RESOURCES:Projector
RESOURCES:Room A
RESOURCES:DVD player
RESOURCES:Photoshop license A
SEQUENCE:0
UID:73d81fac-5540-43e1-82e1-c8354369306d
END:VEVENT
END:VCALENDAR

ical.net does not fully model the Resources property. For most use cases, its treatment is probably sufficient.