Total summaries are aggregate function values calculated across all rows within the DevExpress MVC Grid View and displayed within its footer. The footer is visible if the Settings.ShowFooter property is set to true.
A group summary represents the value of an aggregate function calculated across all data rows within a group. Group summaries are displayed within group rows. The Grid View stores its group summaries within the GroupSummary collection. Individual items are represented by ASPxSummaryItem objects.