我正在尝试使用MVVM设计模式在WPF中实现一个井字游戏。游戏现在运行正常，但是当我试图重新设置游戏重新开始时，问题就出现了。在这种情况下，我所做的是直接更新集合，然后窗口中的网格不会更新为新值。
除此之外，我希望从MVVM的Angular 对我的实现提供一些反馈。下面是我的实现：
BoardView.xaml:

<Grid Name="boardGrid" Background="White">
        <Grid.Resources>
            <Style TargetType="Label">
                <EventSetter Event="MouseLeftButtonUp" Handler="Label_Click"/>
            </Style>
        </Grid.Resources>

        <UniformGrid Rows="3" Columns="3">
            <Label Content="{Binding Path=Board[0], Mode=TwoWay}"/>
            <Label Content="{Binding Path=Board[1], Mode=TwoWay}"/>
            <Label Content="{Binding Path=Board[2], Mode=TwoWay}"/>
            <Label Content="{Binding Path=Board[3], Mode=TwoWay}"/>
            <Label Content="{Binding Path=Board[4], Mode=TwoWay}"/>
            <Label Content="{Binding Path=Board[5], Mode=TwoWay}"/>
            <Label Content="{Binding Path=Board[6], Mode=TwoWay}"/>
            <Label Content="{Binding Path=Board[7], Mode=TwoWay}"/>
            <Label Content="{Binding Path=Board[8], Mode=TwoWay}"/>
        </UniformGrid>
    </Grid>

字符串
BoardView.xaml.cs:

private BoardViewModel _viewModel;
        public BoardView()
        {
            InitializeComponent();
            _viewModel = new BoardViewModel();
            this.DataContext = _viewModel;
        }

        private void Label_Click(object sender, System.Windows.Input.MouseButtonEventArgs e)
        {
            _viewModel.LabelClick(sender);
        }

型
Board.cs:

private string[] tiles;

        public Board()
        {
            tiles = new string[9];

            for (int i = 0; i < 9; i++)
                tiles[i] = TurnSymbol._.ToString();
        }

        public string[] Tiles
        {
            get { return tiles; }
            set { tiles = value; }
        }

型
以及BoardViewModel.cs中的相关部分：

enum TurnSymbol
    {
        x,
        o,
        _
    }
internal class BoardViewModel : INotifyPropertyChanged
    {
        private TurnSymbol currentSymbol;
        private Board board;
        public event PropertyChangedEventHandler? PropertyChanged;

        public string[] Board
        {
            get { return board.Tiles; }
            set
            {
                board.Tiles = value;
                OnPropertyChanged(nameof(Board));
            }
        }

        public BoardViewModel()
        {
            board = new Board();
        }

        protected virtual void OnPropertyChanged(string propertyName) 
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        internal void LabelClick(object sender)
        {
            if((string)((Label)sender).Content == TurnSymbol._.ToString())
            {
                ((Label)sender).Content = currentSymbol.ToString();
                nextSymbol();

                //Need completion
                IsGameOver();
            }
            else
            {
                MessageBox.Show("This cell is already filled! Choose another one.");
            }
        }

        private bool HandleGameOverMessage(string winningSymbol)
        {
            if(MessageBox.Show($"Game over! {winningSymbol} wins!", "Play again?", MessageBoxButton.YesNo) == MessageBoxResult.Yes)
            {
                return true;
            }
        }

        private void HandleGameOver(string winningSymbol)
        {
            //Need completion
            bool playAgain = HandleGameOverMessage(winningSymbol);

            //Not needed but for extra clarity
            if(playAgain) 
                Reset();
        }

        private void Reset()
        {
            for(int i = 0; i < 9; i++)
                Board[i] = TurnSymbol._.ToString();

            currentSymbol = TurnSymbol.x;

            MessageBox.Show("x starts!", "", MessageBoxButton.OK);
        }

        internal bool IsGameOver()
        {
            //Check rows
            if (board.Tiles[0] != TurnSymbol._.ToString() && board.Tiles[0] == board.Tiles[1] && board.Tiles[1] == board.Tiles[2])
            {
                HandleGameOver(board.Tiles[1]);
            }
            else if (board.Tiles[3] != TurnSymbol._.ToString() && board.Tiles[3] == board.Tiles[4] && board.Tiles[4] == board.Tiles[5])
            ...

            return false;
        }
    }

型
我尝试在xaml中添加UpdateSourceTrigger=PropertyChanged。我还调试了应用程序，可以看到Board属性和board.Tiles已更新并显示正确的值，所以我猜是我缺少了一些东西，或者我在绑定方面做错了。