title: Disable sorting of one row in DataGridView
body: <p>I'm showing a DataGridView on my VB.NET-GUI. In this table, the last row is a Total-Row which shows an average value. </p>
  
  <p>Sorting after columns must actually be possible, but I'd like to fix the Total-Row somehow so it stays the last row. Is this possible or somehow a standard behavior?</p>