title: Display XML data in TreeView control using LINQ
body: <p>How to display XML data in TreeView control using Linq To XML 
  and Also In contrast save TreeView data in XML by using Linq</p>
  
  <p>example xml file</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;factors&gt;
    &lt;factor number="1" price="1000"&gt;
      &lt;code&gt;12&lt;/code&gt;
      &lt;group&gt;A&lt;/group&gt;
    &lt;/factor&gt;
  &lt;/factors&gt;
  </code></pre>
  
  <p>I'm using Windows Forms and C#</p>