c# webclient如何处理Cookies

using System;
using System.Net;
using System.Net.Cookie;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        // 创建一个新的WebClient实例
        using (WebClient webClient = new WebClient())
        {
            // 设置Cookie容器
            webClient.CookieContainer = new CookieContainer();

            // 第一次请求，模拟登录
            string loginUrl = "https://example.com/login";
            string loginData = "username=your_username&password=your_password";
            await webClient.UploadStringTaskAsync(loginUrl, loginData);

            // 第二次请求，模拟浏览其他页面
            string otherUrl = "https://example.com/otherpage";
            string otherData = "This is a test page.";
            string response = await webClient.DownloadStringTaskAsync(otherUrl);

            // 输出响应内容
            Console.WriteLine(response);
        }
    }
}