Grouping in Code

• Feb 27, 2026
• 2 minutes to read

This document consists of the following sections.

• Server-Side Approach
• Client-Side Approach

Server-Side Approach

To group data on the server, do one of the following:

• Call the column’s GridViewDataColumn.GroupBy method.
• Set the column’s GridViewDataColumn.GroupIndex property to a non negative value. This property specifies whether the column takes part in grouping and at which level.
• Call the Grid View ‘s ASPxGridView.GroupBy method.

To ungroup data, do one of the following:

• Call the column’s GridViewDataColumn.UnGroup method.
• Set the column’s GridViewDataColumn.GroupIndex property to -1.
• Call the Grid View ‘s ASPxGridView.UnGroup method.

The following methods allow you to manipulate group rows from server code:

Member	Description
ASPxGridView.ExpandAll	Expands all group rows.
ASPxGridView.ExpandRow	Expands the specified group row.
ASPxGridView.CollapseAll	Collapses all group rows.
ASPxGridView.CollapseRow	Collapses the specified group row.

Client-Side Approach

To group data on the client, use the ASPxClientGridView.GroupBy method.

To ungroup data, call the ASPxClientGridView.UnGroup method.

To prevent grouping, handle the ASPxClientGridView.ColumnGrouping client event. The processed client column is identified by the event parameter’s column property. To cancel the operation, set the cancel property to true.

The following methods allow you to manipulate group rows from client code:

Member	Description
ASPxClientGridView.ExpandAll	Expands all group rows.
ASPxClientGridView.ExpandRow	Expands the specified group row and optionally its child group rows at all nesting levels.
ASPxClientGridView.CollapseAll	Collapses all group rows.
ASPxClientGridView.CollapseRow	Collapses the specified group row and optionally its child group rows at all nesting levels.