如何重写c# javascriptserializer类的SerializeDateTime方法？

using System;
using System.Globalization;
using System.Web.Script.Serialization;

public class CustomJavaScriptSerializer : JavaScriptSerializer
{
    public override string SerializeDateTime(DateTime dt)
    {
        // 将DateTime对象转换为ISO 8601格式的字符串
        return dt.ToString("o", CultureInfo.InvariantCulture);
    }
}

public class Example
{
    public DateTime Date { get; set; }
}

class Program
{
    static void Main()
    {
        var example = new Example
        {
            Date = DateTime.Now
        };

        var serializer = new CustomJavaScriptSerializer();
        var json = serializer.Serialize(example);

        Console.WriteLine(json);
    }
}