允许在WPF DataGrid中滚动RowDetail内容的方法

<DataGrid>
    <DataGrid.Resources>
        <Style TargetType="DataGridRow">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="DataGridRow">
                        <Grid>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto"/>
                                <RowDefinition Height="Auto"/>
                            </Grid.RowDefinitions>
                            <DataGridCellsPresenter Grid.Row="0"/>
                            <ToggleButton x:Name="RowHeaderToggleButton" Grid.Row="1" Content="Details" ClickMode="Press"/>
                            <ContentPresenter x:Name="RowDetailsPresenter" Grid.Row="2" Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=DetailsVisibility, Converter={StaticResource BooleanToVisibilityConverter}}">
                                <ContentPresenter.ContentTemplate>
                                    <DataTemplate>
                                        <ScrollViewer CanContentScroll="False">
                                            <!-- RowDetail内容 -->
                                        </ScrollViewer>
                                    </DataTemplate>
                                </ContentPresenter.ContentTemplate>
                            </ContentPresenter>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </DataGrid.Resources>
</DataGrid>

<DataGrid>
    <DataGrid.RowDetailsTemplate>
        <DataTemplate>
            <Expander IsExpanded="True">
                <ScrollViewer>
                    <!-- RowDetail内容 -->
                </ScrollViewer>
            </Expander>
        </DataTemplate>
    </DataGrid.RowDetailsTemplate>
</DataGrid>

public class CustomDataGrid : DataGrid
{
    public override void OnApplyTemplate()
    {
        base.OnApplyTemplate();
        
        var rowDetailsPresenter = GetTemplateChild("PART_RowDetailsPresenter") as RowDetailsPresenter;
        if (rowDetailsPresenter != null)
        {
            var scrollViewer = FindVisualChild<ScrollViewer>(rowDetailsPresenter);
            if (scrollViewer != null)
            {
                scrollViewer.CanContentScroll = false;
            }
        }
    }
    
    private static T FindVisualChild<T>(DependencyObject parent) where T : DependencyObject
    {
        for (int i = 0; i < VisualTreeHelper.GetChildrenCount(parent); i++)
        {
            var child = VisualTreeHelper.GetChild(parent, i);
            if (child is T)
            {
                return (T)child;
            }
            else
            {
                var result = FindVisualChild<T>(child);
                if (result != null)
                {
                    return result;
                }
            }
        }
        return null;
    }
}