在单元格中使用datepicker的WPF datagrid会阻止enter键

<Style TargetType="DataGrid" x:Key="CustomDataGridStyle">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="DataGrid">
                <Border Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}">
                    <ScrollViewer x:Name="DG_ScrollViewer"
                                  Focusable="false">
                        <StackPanel>
                            <!-- DataGrid的其他部分 -->
                            <!-- ... -->
                            <DataGridTemplateColumn>
                                <DataGridTemplateColumn.CellTemplate>
                                    <DataTemplate>
                                        <DatePicker SelectedDate="{Binding YourDateProperty}"
                                                    PreviewKeyDown="DatePicker_PreviewKeyDown"/>
                                    </DataTemplate>
                                </DataGridTemplateColumn.CellTemplate>
                            </DataGridTemplateColumn>
                        </StackPanel>
                    </ScrollViewer>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

private void DatePicker_PreviewKeyDown(object sender, KeyEventArgs e)
{
    if (e.Key == Key.Enter)
    {
        // 手动触发DataGrid的默认行为，例如选中下一行或者编辑下一个单元格
        DataGrid grid = FindVisualParent<DataGrid>(sender as DependencyObject);
        if (grid != null)
        {
            // 选中下一行
            grid.CommitEdit();
            grid.CommitEdit(DataGridEditingUnit.Row, true);
            grid.SelectedIndex += 1;
            grid.Focus();
        }
    }
}

private static T FindVisualParent<T>(DependencyObject child) where T : DependencyObject
{
    DependencyObject parentObject = VisualTreeHelper.GetParent(child);
    if (parentObject == null)
        return null;

    T parent = parentObject as T;
    if (parent != null)
        return parent;

    return FindVisualParent<T>(parentObject);
}

<DataGrid Style="{StaticResource CustomDataGridStyle}">
    <!-- DataGrid的其他部分 -->
    <!-- ... -->
</DataGrid>