如何将对象映射到c#中谷歌分析事件的正确查询字符串？

using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Web;

namespace GoogleAnalyticsExample
{
    class Program
    {
        static void Main(string[] args)
        {
            // 创建一个新的Google Analytics事件对象
            var analyticsEvent = new GoogleAnalyticsEvent
            {
                Category = "Button",
                Action = "Click",
                Label = "Homepage",
                Value = 1
            };

            // 将事件对象转换为查询字符串
            var queryString = ToQueryString(analyticsEvent);

            // 发送查询字符串到Google Analytics
            SendToGoogleAnalytics(queryString);
        }

        static string ToQueryString(object obj)
        {
            var properties = obj.GetType().GetProperties();
            var parameters = new List<string>();

            foreach (var property in properties)
            {
                var name = HttpUtility.UrlEncode(property.Name);
                var value = HttpUtility.UrlEncode(property.GetValue(obj)?.ToString() ?? "");

                parameters.Add($"{name}={value}");
            }

            return string.Join("&", parameters);
        }

        static void SendToGoogleAnalytics(string queryString)
        {
            var endpoint = "https://www.google-analytics.com/collect";
            var url = $"{endpoint}?{queryString}";

            using (var client = new HttpClient())
            {
                client.GetAsync(url).Wait();
            }
        }
    }

    class GoogleAnalyticsEvent
    {
        public string Category { get; set; }
        public string Action { get; set; }
        public string Label { get; set; }
        public int Value { get; set; }
    }
}