Group Footers are an alternative way to display summaries for grouped data. Group Footers contain footer cells that correspond to individual data columns. Footer cells display formatted summary values.
In this example, grid values are grouped against the Order Date column. For each group, summaries are computed against the Country (Count), Quantity (Sum), and Total (Sum) columns within the group footer.
Group footers can be displayed for all group rows, or only for expanded group rows. To specify when the ASPxGridView displays group footers, use the Settings.ShowGroupFooter property.