title: LINQ queries against Open XML
body: <p>I have ID of WorksheetPart object obtained earlier from:</p>
  
  <pre><code>var id = document.WorkbookPart.GetIdOfPart(worksheetPart);
  </code></pre>
  
  <p>Now I'm trying to get object back by using LINQ. However, I'm unable to find ID property of the mentioned object:</p>
  
  <pre><code>var worksheetPart = document.WorkbookPart.WorksheetParts.Where(x =&gt; x.??? == id).First();
  </code></pre>
  
  <p>What property can I use instead of ??? placeholder?</p>