How to cancel the current cell focus for empty cells in WinForms GridControl?

void gridControl1_CurrentCellActivating(object sender, GridCurrentCellActivatingEventArgs e)
{
  //Avoids the cell click while cells have no value or for empty cells.
  GridStyleInfo style = this.gridControl1.GetViewStyleInfo(e.RowIndex, e.ColIndex);
  if (e.RowIndex > this.gridControl1.Rows.HeaderCount && e.ColIndex >  this.gridControl1.Cols.HeaderCount &&
(style.CellValue == null || style.CellValue == string.Empty))
    {
      e.Cancel = true;
    }
}
void gridControl1_CellClick(object sender, GridCellClickEventArgs e)
{
 //Gets the label name of the columns and rows.
 string col = GridRangeInfo.GetAlphaLabel(e.ColIndex);
 string row = GridRangeInfo.GetNumericLabel(e.RowIndex);
  string enablerCellValue = this.gridControl1[e.RowIndex, e.ColIndex].CellValue.ToString();
  //Avoids the coordinates of the empty cell.
  if (enablerCellValue != string.Empty)
    {
      MessageBox.Show("The " + col + row + " Cell is clicked");
    }
}

Private Sub gridControl1_CurrentCellActivating(ByVal sender As Object, ByVal e As GridCurrentCellActivatingEventArgs)
 ' Avoids the cell click while cells have no value or for empty cells.
  Dim style As GridStyleInfo = Me.gridControl1.GetViewStyleInfo(e.RowIndex, e.ColIndex)
  If e.RowIndex > Me.gridControl1.Rows.HeaderCount AndAlso e.ColIndex >    Me.gridControl1.Cols.HeaderCount AndAlso (style.CellValue Is Nothing OrElse   style.CellValue = String.Empty) Then
    e.Cancel = True
  End If
End Sub
Private Sub gridControl1_CellClick(ByVal sender As Object, ByVal e As GridCellClickEventArgs)
  'Gets the label name of the columns and rows.
  Dim col As String = GridRangeInfo.GetAlphaLabel(e.ColIndex)
  Dim row As String = GridRangeInfo.GetNumericLabel(e.RowIndex)
  Dim enablerCellValue As String = Me.gridControl1(e.RowIndex, e.ColIndex).CellValue.ToString()
  ' Avoids the coordinates of the empty cell.
  If enablerCellValue <> String.Empty Then
    MessageBox.Show("The " & col & row & " Cell is clicked")
  End If
End Sub