title: Replace Double Quotes Within Attributes only in XML : C#
body: <p>I've this string which will be part of an XML/XML Node:</p>
  
  <pre><code>string a = "&lt;Node a=\"a\"[\"\"/&gt;";
  </code></pre>
  
  <p>I need only the attribute quotes to be escaped so that it becomes</p>
  
  <pre><code>a= "Node a=\"a&amp;qout;[&amp;qout;\"/&gt;";
  </code></pre>
  
  <p>I'm using C#, .NET 2.0.</p>