Json.NET:序列化图表系列只返回“类型名”

using Newtonsoft.Json;

public class ChartSeries
{
    public string Name { get; set; }
    public int[] Data { get; set; }
}

public class ChartData
{
    public ChartSeries[] Series { get; set; }
}

public class Program
{
    public static void Main()
    {
        ChartSeries series1 = new ChartSeries
        {
            Name = "Series 1",
            Data = new int[] { 1, 2, 3, 4, 5 }
        };

        ChartSeries series2 = new ChartSeries
        {
            Name = "Series 2",
            Data = new int[] { 6, 7, 8, 9, 10 }
        };

        ChartData chartData = new ChartData
        {
            Series = new ChartSeries[] { series1, series2 }
        };

        JsonSerializerSettings settings = new JsonSerializerSettings
        {
            TypeNameHandling = TypeNameHandling.Objects
        };

        string json = JsonConvert.SerializeObject(chartData, settings);
        Console.WriteLine(json);
    }
}