WPF MVVM -以编程方式触发数据标记排序方向的箭头开发者社区

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<DataGrid x:Name="GridProduct" 
          ItemsSource="{Binding Path=ProductResult}" 
          Style="{StaticResource defaultDataGridStyle}" 
          CellStyle="{StaticResource defaultCellStyle}"
          ColumnHeaderStyle="{StaticResource defaultCellHeaderStyle}"> 
  <DataGrid.Columns>
       <DataGridTextColumn Header="Product Name" Binding="{Binding ProductName}" />
       <DataGridTextColumn Header="Product Price" Binding="{Binding ProducPrice}"/> 
  </DataGrid.Columns>
</DataGrid>

<Style x:Key="defaultCellHeaderStyle" TargetType="DataGridColumnHeader" BasedOn="{StaticResource MetroDataGridColumnHeader}">
    <Setter Property="FontSize" Value="16"></Setter>
    <Setter Property="Command" Value="{Binding Path=DataContext.SortCommand, RelativeSource={RelativeSource AncestorType=DataGrid}}" />
    <Setter Property="CommandParameter" Value="{Binding Path=Content, RelativeSource={RelativeSource Self}}"></Setter>
</Style>
<Style x:Key="defaultCellStyle" TargetType="DataGridCell" BasedOn="{StaticResource MetroDataGridCell}">
    <Setter Property="FontSize" Value="16"></Setter>
    <Setter Property="HorizontalContentAlignment" Value="Center"></Setter>
    <Setter Property="HorizontalAlignment" Value="Stretch"></Setter>
</Style>

public List<Product> ProductResult
        _productResult = _productResult.OrderBy(x => x.Name).ToList();
        return _productResult;
}

SortDirection="Ascending"

( (INotifyCollectionChanged)Items.SortDescriptions ).CollectionChanged += new NotifyCollectionChangedEventHandler( OnItemsSortDescriptionsChanged );
private void OnItemsSortDescriptionsChanged( object sender, NotifyCollectionChangedEventArgs e )
    //Synchronize effective sorting in the grid and Visual style on columns
    if ( Items != null )
        foreach ( DataGridColumn column in Columns )
            column.SortDirection = null;
            foreach ( SortDescription sd in Items.SortDescriptions )
                if ( column.SortMemberPath == sd.PropertyName )
                    column.SortDirection = sd.Direction;

问 WPF MVVM -以编程方式触发数据标记排序方向的箭头 EN

回答 2

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Stack Overflow用户