How to delete div by class name using WebBrowser?

Question

How to delete div by class name using WebBrowser?

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#1 by (2 votes)
#2 by (1 votes)

1

Considering this code:

<div class="panel panel-default">
  <div class="panel-heading">
    <p>Informações Adicionais</p>
  </div>
  <div class="panel-body">

    <ul class="list-unstyled">
      <li>
        <strong>Data: </strong> 01/01/2016 21:05 à 02/02/2016 23:59
      </li>
      <li>
        <strong>Situação:</strong>  <span class="js-bootstrap-tooltip" title=""></span>
      </li>
      <li>
        <strong>Nota: </strong>  <span style="color: #"></span>
      </li>

      <li>
        <strong>Correção: </strong> 01/01/2016 21:05 à 02/02/2016 23:59</div>
      </li>
  </ul>
  <hr />
  <h5>Arquivos</h5>
  <hr />
  <p class="mb-10 alert alert-danger">Mensagem .....</p>

</div>
<footer id="footer" class="page-footer">
  <h6 class="pull-left no-margin">EMPRESA 1.0.0</h6>
  <h6 class="copyright pull-right no-margin">&copy; 2016 TESTE</h6>
  <a href="#acessibilidade" class="screen-reader">Retornar ao topo</a>
</footer>

Above we have the site source code that runs within WebBrowser . We have two parts, the second part I can remove with the following code:

HTMLDocumentClass htmldoc=web_Pagina.Document.DomDocument as HTMLDocumentClass;
IHTMLDOMNode node=htmldoc.getElementById("footer") as IHTMLDOMNode;
node.parentNode.removeChild(node);

But how can I remove what exists inside the div with class panel panel-default ?

html c# webbrowser

asked by anonymous 09.04.2016 / 20:26

2 answers

Problem when styling a placeholder based on a class in CSS Angularjs Controller does not work right

score 2 · Answer 1

You want to get an element by the class attribute, right?

You need to create a method that does this for you. Just iterate through all elements of the html document by checking its className attribute and compare to what you are looking for.

static IEnumerable<HtmlElement> GetElementByClass(HtmlDocument documento, string classe)
{
    foreach (HtmlElement elemento in documento.All)
        if (elemento.GetAttribute("className") == classe)
            yield return elemento;
}

With the above method just use it to find the desired node and delete it equal to the node with id footer:

HTMLDocumentClass htmldoc = web_Pagina.Document.DomDocument as HTMLDocumentClass;
IHTMLDOMNode node = GetElementByClass(htmldoc, "panel panel-default")[0] as IHTMLDOMNode;
node.parentNode.removeChild(node);

score 1 · Answer 2

For the above code to be complete and correct, it is necessary to convert the first element (htmldoc) being passed by parameter from " HTML Document Class " to " HTML Document ".

Argument 1: cannot convert from 'mshtml.HTMLDocumentClass' to 'System.Windows.Forms.HtmlDocument'