C#使用WebClient登录网站并抓取登录后的网页信息实现方法

public class CookieAwareWebClient : WebClient{  private CookieContainer cookie = new CookieContainer();  protected override WebRequest GetWebRequest(Uri address)  {    WebRequest request = base.GetWebRequest(address);    if (request is HttpWebRequest)    {      (request as HttpWebRequest).CookieContainer = cookie;    }    return request;  }}

var client = new CookieAwareWebClient();client.BaseAddress = @"https://hovertree.net/any/base/url/";var loginData = new NameValueCollection();loginData.Add("login", "YourLogin");loginData.Add("password", "YourPassword");client.UploadValues("login.php", "POST", loginData);//Now you are logged in and can request pagesstring htmlSource = client.DownloadString("index.php");