c# - 如何在 wpf DataGrid 上禁用多列排序？

Question

我需要在 DataGrid 上禁用多列排序。这可能吗？

Answer 1

通过订阅 DataGrid_Sorting 事件并将 args 的 Handled 属性设置为 true，我取得了成功：

private void ResultsDataGrid_Sorting(object sender, DataGridSortingEventArgs e)
{
    if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
    {
        e.Handled = true;
    }
}

Answer 2

你可以创建一个行为并处理你自己的排序。以下未经测试:)

public class DataGridICollectionViewSortMerkerBehavior : Behavior<DataGrid>
{
    protected override void OnAttached()
    {
        base.OnAttached();
        AssociatedObject.Sorting += AssociatedObjectSorting;
    }

    protected override void OnDetaching()
    {
        base.OnDetaching();
        AssociatedObject.Sorting -= AssociatedObjectSorting;
    }

    void AssociatedObjectSorting(object sender, DataGridSortingEventArgs e)
    {
        var view = AssociatedObject.ItemsSource as ICollectionView;
        var propertyname = e.Column.SortMemberPath;

        e.Column.SortDirection = this.GetSortArrowForColumn(e.Column);

        if (view == null)
            return;

        view.SortDescriptions.Clear();            
        var sort = new SortDescription(propertyname, (ListSortDirection)e.Column.SortDirection);
        view.SortDescriptions.Add(sort);


        e.Handled = true;
    }


    private ListSortDirection GetSortArrowForColumn(DataGridColumn col)
    {
        if (col.SortDirection == null)
        {
           return ListSortDirection.Ascending;
        }
        else
        {
            return col.SortDirection == ListSortDirection.Ascending ? ListSortDirection.Descending : ListSortDirection.Ascending;
        }
    }
   }

xml

 <DataGrid ...>
    <i:Interaction.Behaviors>
            <Kadia:DataGridICollectionViewSortMerkerBehavior />
    </i:Interaction.Behaviors>