I have a class that derives from a Windows forms datagrid and of instance of
this class is hosted within a Windows forms user control.  In the derived
class, I have overridden the ProcessDialogKey method and the
PreProcessMessage methods in hopes of trapping a press of the up and down
arrow keys.  However, these methods never execute.  It seems something else
is intercepting those key strokes, but I am at a loss.

What am I missing?

Thanks for you help.

Chris

Here is the code for the overridden methods:

protected override bool ProcessDialogKey(Keys keyData)
{
   if (keyData == Keys.Down || keyData == Keys.Up)
  {
       MessageBox.Show("ProcessDialogKey: " + keyData.ToString());
   }

  return base.ProcessDialogKey (keyData);
}

public override bool PreProcessMessage( ref Message msg )
{
  Keys keyCode = (Keys)(int)msg.WParam & Keys.KeyCode;
  if(msg.Msg == WM_KEYDOWN && (keyCode == Keys.Down || keyCode == Keys.Up) )
  {
      MessageBox.Show("PreProcessMessage: " + keyCode.ToString());
  }
  return base.PreProcessMessage(ref msg);
}