使用C＃桌面应用程序登录网站

Question

我正在尝试登录到网站“ https://my.freecycle.org/ ”。我尝试了多种方法，包括此stackoverflow 通过C＃登录到网站，但没有运气，它似乎不是标准形式。

<form method="post" class="cols_2" action="https://my.freecycle.org/login" id="loginform" accept-charset="utf-8"><fieldset>
<input type="hidden" name="referer" value="">

<label for="username">Username (or email address):</label>
<input type="text" name="username" id="username"><br>

<label for="pass">Password:</label>
<input type="password" name="pass" id="pass"><br>

<input type="submit" value="Log in" class="button defaultButton vgap ui-button ui-widget ui-state-default ui-corner-all" role="button" aria-disabled="false">

我非常感谢您的帮助，以下是我尝试过的代码。

private void button1_Click(object sender, EventArgs e)
    {
        CookieAwareWebClient client = new CookieAwareWebClient();
        client.BaseAddress = @"https://my.freecycle.org/";
        NameValueCollection loginData = new NameValueCollection();
        loginData.Add("username", @"myemail@gmail.com");
        loginData.Add("pass", "mypassword");
        client.UploadValues("login", "POST", loginData);

        //Now you are logged in and can request pages    
        string htmlSource = client.DownloadString(client.BaseAddress);
        textBox1.Text = htmlSource;
    }

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;
    }
}

Answer 1

抱歉，如果我浪费了任何时间在研究此内容。 想知道为什么没有错误后，在考虑上述评论问题时，我意识到这条线。

string htmlSource = client.DownloadString(client.BaseAddress);

从最初的登录页面获取源，而不是从登录后获取源的页面。

输入正确的着陆网址后，我会得到预期的结果。

string htmlSource = client.DownloadString(@"https://my.freecycle.org/page/i/need");