title: Header column with a column span in a GridView
body: <p>For example, I want to have my header as the following:</p>
  
  <pre><code>|       Header Column           |      Header Column2      |
  |apple|Microsoft|Android|Dell|HP|Targus|Stack Overflow|Acer|
  </code></pre>
  
  <p>My VB code to add a column is the following:</p>
  
  <pre><code>Dim dt As New DataTable
  dt.Clear()
      dt.Columns.Add("apple")
      dt.Columns.Add("Microsoft")
  Dim mr As DataRow
      mr = dt.NewRow
      mr("apple") = "Macbook"
      mr("Microsoft") = "Surface Pro"
  dt.Rows.Add(mr)
  GridView1.DataSource = dt
  GridView1.DataBind()
  </code></pre>