public void ShowMessage(User sender, string message)
{
_writer.WriteLine("{0} [{1}] Sending Message : {2}", DateTime.UtcNow, sender.Name, message);
_users
.Where(user => user != sender)
.ToList()
.ForEach(user => _writer.WriteLine("{0} [{1}] Receiving Message: {2}", DateTime.UtcNow, sender.Name, message));
}
public void Add(User user)
{
_users.Add(user);
}