How to retrieve the summary values when summary row is selected in WinForms GridGroupingControl?

//For summary row selection
this.gridGroupingControl1.TableOptions.ListBoxSelectionMode = SelectionMode.MultiExtended;
this.gridGroupingControl1.TableOptions.AllowSelection = GridSelectionFlags.Row | GridSelectionFlags.AlphaBlend;
void TableModel_SelectionChanged(object sender, GridSelectionChangedEventArgs e)
{
    // Checking whether RangeType is Rows
    if(e.Range.RangeType == GridRangeInfoType.Rows)
    {
       for(int row = e.Range.Top; row <= e.Range.Bottom; row++)
       {
          //Retrieving each element and converting as Element object
          Element element = gridGroupingControl1.Table.NestedDisplayElements[row];
          if(element.Kind == DisplayElementKind.Summary)
          {
             //Converting Element object as GridSummaryRow object
             GridSummaryRow sr = element as GridSummaryRow;
             if(sr != null)
             {
                foreach(GridSummaryColumnDescriptor scd in sr.SummaryRowDescriptor.SummaryColumns)
                {
                   string result = GridEngine.GetSummaryText(sr.ParentGroup, scd);
                   //print the results in the output window
                   //Console.WriteLine("GroupLevel = {0}, SummaryColumns_Name = {1}, Value = {2}", sr.GroupLevel, scd.Name, result);
                   MessageBox.Show("GroupLevel = " + sr.GroupLevel + ", SummaryColumns_Name = " + scd.Name + " , Value = " + result);
                }
             }
          }
       }
    }
}

'For summary row selection
Me.gridGroupingControl1.TableOptions.ListBoxSelectionMode = SelectionMode.MultiExtended
Me.gridGroupingControl1.TableOptions.AllowSelection = GridSelectionFlags.Row Or GridSelectionFlags.AlphaBlend
Private Sub TableModel_SelectionChanged(ByVal sender As Object, ByVal e As GridSelectionChangedEventArgs)
   ' Checking whether RangeType is Rows
   If e.Range.RangeType = GridRangeInfoType.Rows Then
      For row As Integer = e.Range.Top To e.Range.Bottom
         'Retrieving each element and converting as Element object
         Dim element As Element = gridGroupingControl1.Table.NestedDisplayElements(row)
         If element.Kind = DisplayElementKind.Summary Then
            'Converting Element object as GridSummaryRow object
            Dim sr As GridSummaryRow = TryCast(element, GridSummaryRow)
            If sr IsNot Nothing Then
               For Each scd As GridSummaryColumnDescriptor In sr.SummaryRowDescriptor.SummaryColumns
                   Dim result As String = GridEngine.GetSummaryText(sr.ParentGroup, scd)
                   'print the results in the output window
                   'Console.WriteLine("GroupLevel = {0}, SummaryColumns_Name = {1}, Value = {2}", sr.GroupLevel, scd.Name, result);
                   MessageBox.Show(result)
                Next scd
            End If
         End If
      Next row
   End If
End Sub