如何在wpf DataGrid上禁用多列排序？

Question

我需要禁用DataGrid上的多列排序。這可能嗎？

Answer 1

我通過訂閱DataGrid_Sorting事件的Args' Handled屬性設置爲true，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

你可以創建一個行爲，並處理排序是你自己。 以下沒有測試:)

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; 
     } 
    } 
    } 

XAML

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