c#使用WebBrowser cookie的WebRequest

WebBrowser webBrowser = new WebBrowser();
CookieContainer cookieContainer = new CookieContainer();
webBrowser.DocumentCompleted += (sender, args) =>
{
    if (args.Url.ToString() == "https://www.example.com/login")
    {
        HtmlElement loginElement = webBrowser.Document.GetElementById("login");
        HtmlElement passwordElement = webBrowser.Document.GetElementById("password");
        loginElement.SetAttribute("value", "your_username");
        passwordElement.SetAttribute("value", "your_password");
        HtmlElement submitElement = webBrowser.Document.GetElementById("submit");
        submitElement.InvokeMember("click");
    }
};
webBrowser.Navigate("https://www.example.com/login", "_self", null, "Cookie: name=value");

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://www.example.com");
request.Method = "GET";
request.CookieContainer = new CookieContainer();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
string result = reader.ReadToEnd();
response.Close();