如何获得Listview的标题高度 - c#

private double GetListViewHeaderHeight(ListView listView)
{
    GridView gridView = listView.View as GridView;
    if (gridView == null) return 0;

    foreach (var item in gridView.Columns)
    {
        GridViewColumnHeader header = (GridViewColumnHeader)item;
        if (header.Content.ToString() == "标题")
        {
            return header.ActualHeight;
        }
    }

    return 0;
}