title: Select specific xml node from xmlDocument then change xml node's attribute
body: <p>I have a simple xml node inside an xml document in C# that I would like to query, then set the value for the visible attribute to false. Below is the xml. I need to be able to select the node by the node name(DGField) and the text_id(Test.ChangeRank). Does anyone know how to do this? Thanks in advance.</p>
  
  <pre><code>&lt;DGField text_id="Test.ChangeRank" template="Ranking" visible="true"&gt;
  </code></pre>