title: Linq - Add Row to results for display only
body: <p>I have a linq query that returns a brief order summary - product description and product price that gets bound to a data control.  I want to add a row to be bound in this same control that displays tax information.  The product description column would simply say "Tax" and the product price column would give a tax amount.  </p>
  
  <p>I used to retrieve a DataTable of these results and simply do a NewRow() and then set the datasource of my control as the DataTable.  I'm looking for the equivalent technique when using LINQ to SQL.  Thanks.</p>