在DataGrid WPF XAML中显示默认排序的列

<DataGrid x:Name="dataGrid" ItemsSource="{Binding YourDataCollection}">
    <!-- 列定义 -->
    <DataGrid.Columns>
        <DataGridTextColumn Header="Column 1" Binding="{Binding Property1}" />
        <DataGridTextColumn Header="Column 2" Binding="{Binding Property2}" />
        <!-- 其他列定义 -->
    </DataGrid.Columns>
</DataGrid>

public class YourViewModel : INotifyPropertyChanged
{
    private ICollectionView yourDataCollection;

    public ICollectionView YourDataCollection
    {
        get { return yourDataCollection; }
        set
        {
            yourDataCollection = value;
            OnPropertyChanged("YourDataCollection");
        }
    }

    public YourViewModel()
    {
        // 设置数据源
        YourDataCollection = CollectionViewSource.GetDefaultView(YourData);

        // 进行默认排序
        YourDataCollection.SortDescriptions.Add(new SortDescription("Property1", ListSortDirection.Ascending));
    }

    // 其他代码省略...

    public event PropertyChangedEventHandler PropertyChanged;

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

public partial class YourWindow : Window
{
    public YourWindow()
    {
        InitializeComponent();

        // 设置窗口DataContext为ViewModel实例
        DataContext = new YourViewModel();
    }
}