title: Creating a custom format string in a dataGridView
body: <p>I have a dataGridView whose dataSource is a dataTable.</p>
  
  <p>My problem is that I want certain columns to be displayed in Hex.  I can get that far with using something like this:</p>
  
  <pre><code> foreach (DataGridViewColumn c in grid.Columns)
          {
              if (DISPLAYED_IN_HEX.Contains(c.Name))
              {
                  c.DefaultCellStyle.Format = "X";
  
              }
          }
  </code></pre>
  
  <p>My issue though is that I want this hex value prepended with 0x so as not to confuse anyone that they are in hexidecimal form.  The values in the dataTable are various integral types. I looked into creating a custom IFormatProvider, but I don't think my coding skills are up to that par yet.  Any other possible solutions?</p>