title: Show only columns from an string array
body: <p>I have a Table in my Entities with 370 columns ! Furthermore i have a string Array which is not known before runtime (comes from a website).</p>
  
  <p>e.g.:</p>
  
  <pre><code>string [] columns = {"column1", "column2", "column3"}
  </code></pre>
  
  <p>How can i fire a linq to my entities which gives me only the result with the giving columns? </p>
  
  <p>I searched for hours, but don`t suceed till now - any suggestions?</p>