如何在C#中正确检查HttpResponseMessage的http状态码？

using System;
using System.Net.Http;

class Program
{
    static async void CheckHttpResponse()
    {
        HttpClient client = new HttpClient();
        HttpResponseMessage response = await client.GetAsync("https://example.com");

        if (response.IsSuccessStatusCode)
        {
            Console.WriteLine("请求成功");
            // 执行成功时的操作
        }
        else if (response.StatusCode == System.Net.HttpStatusCode.BadRequest)
        {
            Console.WriteLine("请求无效");
            // 执行请求无效时的操作
        }
        else if (response.StatusCode == System.Net.HttpStatusCode.Unauthorized)
        {
            Console.WriteLine("未授权");
            // 执行未授权时的操作
        }
        else if (response.StatusCode == System.Net.HttpStatusCode.NotFound)
        {
            Console.WriteLine("未找到");
            // 执行未找到时的操作
        }
        else if (response.StatusCode == System.Net.HttpStatusCode.InternalServerError)
        {
            Console.WriteLine("服务器内部错误");
            // 执行服务器内部错误时的操作
        }
        else
        {
            Console.WriteLine("其他状态码：" + response.StatusCode);
            // 执行其他状态码时的操作
        }
    }

    static void Main(string[] args)
    {
        CheckHttpResponse();
        Console.ReadLine();
    }
}