title: Opening XML file located in addin folder
body: <p>In a VSTO Excel addin the code:</p>
  
  <pre><code>Dim XMLDoc As XElement = XElement.Load("XMLFile1.xml")
  </code></pre>
  
  <p>generates a <code>FileNotFound</code> error with the message ("<em>Could not find file 'C:\Users\doug\Documents\XMLFile1.xml'.</em>")  It's looking in the My Documents folder but the XML file is located in the VS Projects folder for that project.
  I have set the XML file's "Copy to Output Directory" property to "Copy always".  When I change the code to include the full path to the XML file the code works.</p>
  
  <p>Also, if I include the above code in a Windows Console or other type of project it runs correctly.  I'm only getting it in the Excel Addin.
  The above is true for VSTO 2008/Excel 2003 and VSTO 2010/Excel 2010.</p>