LINQ JOIN Child Collection - linq

Question

I have a meetingRepository class that returns IEnumerable and an attendeeRepository class that returns IEnumerable<Attendee>
public class meetingRepository
{
IEnumerable<Meeting> GetAll()
{
//return all Meetings
}
}
public class attendeeRepository
{
IEnumerable<Attendee>GetAll()
{
//return all Attendees
}
}
public class Meeting
{
public int Id { get; set; }
public DateTime Date { get; set; }
public string FilePath { get; set; }
public int Duration { get; set; }
public IEnumerable<Attendee> Attendees { get; set; }
}
public class Attendee
{
public int Id { get; set; }
public int MeetingId { get; set; }
public string Name { get set;}
public string Role { get; set; }
}
Im struggling to come up with the link statement that will join my IEnumerable<Meeting> object with my IEnumerable<Attendee> joining each Attendee in the Attendees property of the Meeting to its related Attendee object based on the Attendee.Id
Help appreciated
Edit
#Thomas the meetingRepository I have available does not load the Attendees, it is just a full list of all Meetings (I editted to include the Id property).
So, to clarify, my meetingRepository returns an IEnumerable of a partial Meeting object (no attendees)
Id
Date
Duration
FilePath
and my attendeeRepository returns an IEnumerable of participants (editted to include MeetingId
Id
MeetingId
Name
Role
Edit
I came up with the folowing that seems to work fine
var meetingsFull = from m in meetings
join a in attendees
on m.Id equals a.MeetingId into ma
select new Meeting
{
Id=pc.Id,
Date=pc.Date,
Duration=pc.Duration,
FilePath=pc.FilePath,
Attendees=ma
};

Answer 1

var attendees = attendeeRepository.GetAll();
foreach(var meeting in meetingRepository.GetAll())
{
meeting.Attendees = attendees.Where(at=>at.MeetingId == meeting.Id);
}
This should do it. After these assignments your all meetings now have the attendees lists ready in them.