How to read cookie in C# WebClient?

Question

Computer networks

C# application downloading a file

string link = @"http://localhost:2613/siteapi/getfile"; 
WebClient webClient = new WebClient();
webClient.Headers.Add(HttpRequestHeader.Cookie, "accesscode=123456");
webClient.DownloadFileAsync(new Uri(link), @"c:\Download\" + "file.txt");

The server will respond with another cookie and return the file.
How can I read a cookie in a WebClient response?

Answer 1

No way, because you don’t work with the server’s response, the DownloadFileAsync method hides it from you, for full HTTP support, go to HttpWebRequest or RestSharp, by the way, the WebClient inside is also not ideal, it seems that the files didn’t download, but rewrote it to HttpWebRequest, and everything went.

Answer 2

google webclient cookies
It is possible and quite easy.

Answer 3

This is easy to do with HttpClient using CookieContainer

var cookieContainer = new CookieContainer();
           _handler = new HttpClientHandler {CookieContainer = cookieContainer};
           _client = new HttpClient(_handler);

After authorization or any other request, you can save cookies

private void SaveCookie()
        {
            var cookies = _handler.CookieContainer.GetCookies(new Uri(BaseUrl));
            var cookie = cookies["PHPSESSID"];
            using (var writer = new StreamWriter(_cookieFile))
            {
                writer.Write(cookie.ToJson());
            }
        }