public bool RemoveUser(User user)
{
if (Users.FirstOrDefault(u => u.Id == user.Id) == null)
return false;
Users.Remove(user);
//remove all events of the user
foreach (var session in Sessions)
foreach (var ev in session.Events.Where(ev=>ev.UserId == user.Id).ToArray())
session.RemoveEvent(ev);
return true;
}
public bool AddUser(User user)
{
if (Users.FirstOrDefault(u => u.Id == user.Id) != null)
return false;
Users.Add(user);
return true;
}