title: Add column to ASP.net Gridview using C#
body: <p>What is the C# code (code behind) for adding a column to grdview in asp.net ...something equivalent to this :</p>
  
  <pre><code>&lt;asp:BoundField DataField="Last Name" 
               HeaderText="Last Name" 
               SortExpression="LastName" /&gt;
  </code></pre>