如何在UWP中创建在运行时随2D数组一起更改的Grid？

<Grid x:Name="myGrid">
    <!-- Grid的布局和样式 -->
</Grid>

private ObservableCollection<ObservableCollection<int>> myArray = new ObservableCollection<ObservableCollection<int>>();

public MainPage()
{
    InitializeComponent();

    // 初始化2D数组
    for (int i = 0; i < 3; i++)
    {
        ObservableCollection<int> row = new ObservableCollection<int>();
        for (int j = 0; j < 3; j++)
        {
            row.Add(0);
        }
        myArray.Add(row);
    }

    // 将2D数组与Grid绑定
    myGrid.ItemsSource = myArray;
}

<Grid x:Name="myGrid">
    <ItemsControl ItemsSource="{x:Bind myArray}">
        <ItemsControl.ItemsPanel>
            <ItemsPanelTemplate>
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="*" />
                        <ColumnDefinition Width="*" />
                        <ColumnDefinition Width="*" />
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="*" />
                        <RowDefinition Height="*" />
                        <RowDefinition Height="*" />
                    </Grid.RowDefinitions>
                </Grid>
            </ItemsPanelTemplate>
        </ItemsControl.ItemsPanel>
        <ItemsControl.ItemTemplate>
            <DataTemplate>
                <Grid Grid.Column="{Binding Path=Index}">
                    <Grid.RowDefinitions>
                        <RowDefinition Height="*" />
                        <RowDefinition Height="*" />
                        <RowDefinition Height="*" />
                    </Grid.RowDefinitions>
                    <TextBlock Text="{Binding [0]}" Grid.Row="0" />
                    <TextBlock Text="{Binding [1]}" Grid.Row="1" />
                    <TextBlock Text="{Binding [2]}" Grid.Row="2" />
                </Grid>
            </DataTemplate>
        </ItemsControl.ItemTemplate>
    </ItemsControl>
</Grid>