title: How can I read and edit an XML file using C#?
body: <p>How can I open and edit an existing XML file? I would like to modify some values like: </p>
  
  <pre><code>&lt;address&gt;myaddr&lt;/address&gt;
  </code></pre>
  
  <p>For example, I would like to put loreal instead if myaddr. I am working in C#. I would appreciate if you can show me some code.</p>