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 End-User Documentation

GridView.GroupSummary Property

Provides access to group summary items.

Namespace:DevExpress.XtraGrid.Views.Grid
Assembly:DevExpress.XtraGrid.v17.1.dll

Expanded Syntax

Property value

Type: GridGroupSummaryItemCollection
A GridGroupSummaryItemCollection object representing the collection of group summary item objects.

Expanded Remarks

Group summaries are calculated when data grouping is applied. Summary item objects stored within the GroupSummary collection specify the calculation to be performed within each individual group, and also control the summary values' appearance and position. Calculations are performed using values of the specified field and the specified aggregate function. Calculated values are displayed within group rows or row footer cells. Required settings are provided by individual summary items that are represented by GridGroupSummaryItem instances.

Use the methods and properties provided by the GroupSummary property to manage the collection of summary items. You can add new summary items, delete and access existing ones, etc.

If the GridOptionsMenu.ShowGroupSummaryEditorItem option is enabled, an end-user can invoke a Group Summary Editor via a context menu at runtime. This editor allows group summaries to be defined and customized.

For additional information on summaries, see the Group Summary and Total Summary topics.

Expanded Example

The following example shows how to create two group summary items. The first summary item will represent the number of records within groups, and will be displayed in group rows. The second item will calculate the sum of values against the UnitPrice field, and will be displayed under the Unit Price column within group footers. The result of the code execution is presented below:

Expanded See Also

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