//Displays the winner in a message box on the screen
private void DisplayWinner(Winner wnrWinner)
{
//If there is a winner
if (wnrWinner != Winner.None)
{
plrX.OnWinnerAnnounced(wnrWinner);
plrX.OnGameEnded();
plrO.OnWinnerAnnounced(wnrWinner);
plrO.OnGameEnded();
//Show the score on the screen
UpdateScore();
//Show the winning message based on the winner (this is an extension function)
MessageBox.Show(wnrWinner.GetWinMessage(plrX, plrO));
//Reset the board to its original state
ResetBoard();
}
}