How to: Calculate Single Total Summary for Grid's Column

The example demonstrates how to calculate a single total summary for a grid column via the GridColumn.SummaryItem property.

Adding Single Summary Item

colUnitsInStock1.SummaryItem.SummaryType = DevExpress.Data.SummaryItemType.Average;
colUnitsInStock1.SummaryItem.DisplayFormat = "Average = {0:n2}";