Bagaimana untuk Mengikat Nombor Dinamik Lajur ke WPF DataGrid?

<code class="language-csharp">dataGrid.Columns.Add(new DataGridTextColumn
{
    Header = data.ColumnDescriptions[i].Name,
    Binding = new Binding(string.Format("[{0}]", i))
});</code>

<code class="language-csharp">public class DataGridColumnsBehavior
{
    // 附加属性，绑定到DataGridColumn集合
    public static readonly DependencyProperty BindableColumnsProperty =
        DependencyProperty.RegisterAttached("BindableColumns",
                                            typeof(ObservableCollection<DataGridColumn>),
                                            typeof(DataGridColumnsBehavior),
                                            new UIPropertyMetadata(null, BindableColumnsPropertyChanged));
}</code>

<code class="language-xml"><DataGrid ... AutoGenerateColumns="False" local:DataGridColumnsBehavior.BindableColumns="{Binding ColumnCollection}" Name="dataGrid"></DataGrid></code>

<code class="language-csharp">public ObservableCollection<DataGridColumn> ColumnCollection
{
    get;
    private set;
}</code>

<code class="language-csharp">private static void BindableColumnsPropertyChanged(DependencyObject source, DependencyPropertyChangedEventArgs e)
{
    DataGrid dataGrid = source as DataGrid; // 获取DataGrid实例

    // 清除现有列
    dataGrid.Columns.Clear();

    ObservableCollection<DataGridColumn> columns = e.NewValue as ObservableCollection<DataGridColumn>;
    if (columns == null)
    {
        return;
    }

    // 添加新列
    foreach (DataGridColumn column in columns)
    {
        dataGrid.Columns.Add(column);
    }

    // 处理集合更改
    columns.CollectionChanged += (sender, e2) =>
    {
        // ...  处理集合变化，例如重新绑定列
        dataGrid.Columns.Clear();
        foreach (DataGridColumn column in columns)
        {
            dataGrid.Columns.Add(column);
        }
    };
}</code>