在 Win Ui 3 Datagrid Tab 键无法正常工作

Question

当我单击特定列并按 Tab 键时，它将关注列标题而不是下一列。我将如何解决它。

<controls:DataGrid x:Name="grid" CanUserSortColumns="True" SelectionMode="Extended"
                    Height="326" Width="1660" HorizontalAlignment="Center" VerticalAlignment="Top" HorizontalContentAlignment="Center" 
                    AutoGenerateColumns="False" BorderBrush="Black" BorderThickness="1" FontSize="10" GridLinesVisibility="All"
                    ColumnHeaderHeight="25" RowBackground="White" TabFocusNavigation="Cycle" TabNavigation="Cycle"
                    VerticalScrollBarVisibility="Auto">
<controls:DataGrid.Columns>
<controls:DataGridTextColumn Width="20" Binding="{Binding Id, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" FontSize="10"/>
<controls:DataGridTemplateColumn Header="PG" Tag="PG" Width="44">
    <controls:DataGridTemplateColumn.CellTemplate>
        <DataTemplate>
            <TextBox IsReadOnly="True" Text="{Binding RPe,Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Width="45" MinHeight="28" HorizontalAlignment="Left" 
                     Margin="8 -4 0 0" Padding="20 5 0 0" FontSize="10" Background="Transparent" BorderThickness="0" CornerRadius="0" />
        </DataTemplate>
    </controls:DataGridTemplateColumn.CellTemplate>
</controls:DataGridTemplateColumn>
<controls:DataGridTemplateColumn Header="P" Width="174" CanUserSort="True" Tag="Part" >
    <controls:DataGridTemplateColumn.CellTemplate>
        <DataTemplate>
            <StackPanel Orientation="Horizontal" Margin="10,0,0,15">
                <TextBlock x:Name="pnum" Text="{Binding Pnum, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" FontSize="10" 
                         VerticalAlignment="Center" Foreground="Black">
                </TextBlock>
            </StackPanel>
        </DataTemplate>
    </controls:DataGridTemplateColumn.CellTemplate>
</controls:DataGridTemplateColumn>

Answer 1

您可以捕获 PreviewKeyDown 事件并应用您的自定义行为。

<controls:DataGrid PreviewKeyDown="DataGrid_PreviewKeyDown" ... />

private void DataGrid_PreviewKeyDown(object sender, KeyRoutedEventArgs e)
{
    if (sender is not DataGrid dataGrid ||
        e.Key is not VirtualKey.Tab)
    {
        return;
    }

    int columnIndex = dataGrid.Columns.IndexOf(dataGrid.CurrentColumn);
    columnIndex += 1;

    if (columnIndex >= dataGrid.Columns.Count)
    {
        columnIndex = 0;
    }

    if (dataGrid.Columns.ElementAtOrDefault(columnIndex) is not { } column)
    {
        return;
    }

    dataGrid.CurrentColumn = column;
    e.Handled = true;
}