To help provide total control over the display of information within its container, the DevExpress ASP.NET Grid View (ASPxGridView) supports interval grouping. This powerful feature allows you to group the values within text columns against individual characters, or group date-time columns by month, year, or date.
In this demo, the Order Date column uses interval grouping. By default, the Order Date is grouped by Year, and summaries are automatically computed for values stored within the group. You can modify the manner in which group interval order is displayed on-screen by selecting values from the Date group interval combo box.
Interval grouping is controlled by a column's Settings.GroupInterval property.