title: Copy specific columns from one DataTable to another
body: <p>Have some read in data (from excel file) in a DataTable and now I want to filter this and copy only specific columns to the other one!</p>
  
  <p>dataTable format:</p>
  
  <pre><code>some data 
  ColA|ColB|ColC
  xxxx|xxxx|xxxx
  some data
  </code></pre>
  
  <p><code>some data</code> represents other table data not related to ColA-ColC</p>
  
  <p>How can I copy ColA-ColC with xxxx to the new DataTable? </p>
  
  <p>Thx</p>