尝试使用C#在线使用REST API时，收到错误的请求状态代码400

using System;
using System.Net.Http;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        using (HttpClient client = new HttpClient())
        {
            try
            {
                HttpResponseMessage response = await client.GetAsync("https://api.example.com/endpoint");
                response.EnsureSuccessStatusCode(); // 确保请求成功，否则会抛出异常

                string responseBody = await response.Content.ReadAsStringAsync();
                Console.WriteLine(responseBody);
            }
            catch (HttpRequestException ex)
            {
                Console.WriteLine($"请求失败：{ex.Message}");
            }
        }
    }
}