title: How to get last column name from a datatable
body: <p>I am passing a datatable to function like below:</p>
  
  <pre><code>public static DataTable FindingRowOrder(DataTable mynew) 
  {
    // Code 
  }
  </code></pre>
  
  <p>My question is how to get the last column name for the <code>mynew</code> dataTable?</p>