C#使用WebClient登录网站并抓取登录后的网页信息实现方法

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 pages

string htmlSource = client.DownloadString("index.php");