title: Display column in DataGridView as password input type
body: <p>I would like to display a column in a datagridview as a column which contains password chars.I cannot figure it out why does this event is not triggered by the datagridview.</p>
  
  <pre><code>    private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
      {
          if(e.ColumnIndex == 3)
          {
              if(e.Value != null)
              {
                  e.Value = new string('*', e.Value.ToString().Length);
              }
          }
      }
  </code></pre>
  
  <p>Help please.</p>