TableDescriptor.ChildGroupOptions.ShowSummaries = true;// false;
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
GridSummaryColumnDescriptor scd = new GridSummaryColumnDescriptor("totalQuantity", SummaryType.Int32Aggregate, "Quantity", "{Sum}");
GridSummaryColumnDescriptor scd1 = new GridSummaryColumnDescriptor("bidAverage", SummaryType.DoubleAggregate, "Bid", "{Average}");
GridSummaryRowDescriptor srd = new GridSummaryRowDescriptor("summaryrow1", "Aggregates:", new GridSummaryColumnDescriptor[] { scd, scd1 });
srd.Appearance.SummaryFieldCell.HorizontalAlignment = GridHorizontalAlignment.Right;
grid.TableDescriptor.SummaryRows.Add(srd);
BeginInvoke(new MethodInvoker(subscribeQuotes));
}