/// <summary>
/// Updates the UI when a player has left.
/// </summary>
/// <param name="playerName"></param>
private void OnPlayerLeft(string playerName)
{
_manager.RemoveParticipant(_playerToParticipantMap[playerName]);
_playerToParticipantMap.Remove(playerName);
if (PlayerNames.Remove(playerName))
{
SubmittedAnswers.Remove(playerName);
OnPropertyChanged(nameof(PlayerNames));
OnPropertyChanged(nameof(SubmittedAnswers));
}
}