private void displayGrid_KeyDown(object sender, KeyEventArgs e) { var commands = String.Empty; if (e.Key == Key.Down) { commands = "b"; } else if (e.Key == Key.Up) { commands = "f"; } else if (e.Key == Key.Right) { commands = "r"; } else if (e.Key == Key.Left) { commands = "l"; } rover.TakeCommands(commands); PlaceRover(); }