title: How to get item without hitting db twice iqueryable
body: <p>For jquerydatatable, I need to prodive a json like this: </p>
  
  <pre><code>{
   rusults:[],
   count: 100
  }.
  </code></pre>
  
  <p>Before actually hitting db, I have an iqueryable. Because I only get a specific number of per page, I have to use skip and take to get result (one request) and use another request to get item count for pagination.</p>
  
  <p>Please tell me how could I avoid second request?</p>