試圖通過C＃程序登錄到網站

Question

我是C＃的新手，所以我在其他問題中尋找此主題，但他們不適合我。我想要做的是我目前嘗試使用c＃程序（我試圖實現）登錄到我學校的服務器。我想要做的是我知道頁面的代碼，所以我使用C＃的Web瀏覽器導航，然後我只想寫入名稱和密碼到輸入框，這就是我卡住的地方。你能給我任何建議嗎？

如果你想看看頁：https://suis.sabanciuniv.edu/prod/twbkwbis.P_SabanciLogin

感謝您的建議。

在這裏，我是如何使用的代碼（編輯：添加事件處理程序，但這是我第一次使用，因此promts我「對象引用不設置到對象的實例」）：

  private void buttonGo_Click(object sender, EventArgs e) 
    { 
     try 
     { 
      string input = "https://suis.sabanciuniv.edu/prod/twbkwbis.P_SabanciLogin"; 


      webBrowser1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(WebBrowser_DocumentCompleted); 

      webBrowser1.Navigate(input); 
      HtmlDocument doc = webBrowser1.Document; 
      HtmlElement userName = doc.GetElementById("UserID"); 
      HtmlElement pass = doc.GetElementById("PIN"); 
      HtmlElement submit = doc.GetElementById("Login"); 

      userName.SetAttribute("value", textID.Text); 
      pass.SetAttribute("value", textPASS.Text); 

      submit.InvokeMember("Click"); 

     } 
     catch (Exception ex) 
     { 
      MessageBox.Show(ex.Message); 
     } 
    } 
    public void WebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) 
    { 
     var webBrowser = sender as WebBrowser; 
     webBrowser.DocumentCompleted -= WebBrowser_DocumentCompleted; 
     MessageBox.Show(webBrowser.Url.ToString()); 
    } 
} 

}

最後我解決了一個問題，我騙了一點，但設法解決。這裏是工作代碼：

private void buttonGo_Click(object sender, EventArgs e) 
     { 
      try 
      { 
       string input = "https://suis.sabanciuniv.edu/prod/twbkwbis.P_SabanciLogin"; 


       webBrowser1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(WebBrowser_DocumentCompleted); 

       webBrowser1.Navigate(input); 

       HtmlDocument doc = webBrowser1.Document; 
       //HtmlElement userName = doc.GetElementById("UserID"); These not worked because ID of the elements were hidden so they are here to show which of these did not work. 
       //HtmlElement pass = doc.GetElementById("password"); 
       HtmlElement submit = webBrowser1.Document.Forms[0].Document.All["PIN"].Parent.Parent.Parent.NextSibling.FirstChild; 

       //userName.SetAttribute("value", textID.Text); 
       //pass.SetAttribute("value", textPASS.Text); 




       webBrowser1.Document.Forms[0].All["UserID"].SetAttribute("value", textID.Text); 
       webBrowser1.Document.Forms[0].All["PIN"].FirstChild.SetAttribute("value", textPASS.Text); 
       submit.InvokeMember("Click"); 

      } 
      catch (Exception ex) 
      { 
       MessageBox.Show(ex.Message); 
      } 
     } 
     public void WebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) 
     { 
      var webBrowser = sender as WebBrowser; 
      webBrowser.DocumentCompleted -= WebBrowser_DocumentCompleted; 
      MessageBox.Show(webBrowser.Url.ToString()); 
     } 

Answer 1

您需要首先查找用戶名和密碼字段的輸入框作爲ID或節點。然後將它們分配爲這樣：

HtmlDocument doc = webBrowser1.Document; 
HtmlElement email = doc.GetElementById("email"); 
HtmlElement pass = doc.GetElementById("pass"); 
HtmlElement submit = doc.GetElementById("LoginButton"); 

email.SetAttribute("value", "InsertYourEmailHere"); 
//Same for password 

submit.InvokeMember("Click");