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 End-User Documentation

GridColumn.GroupIndex Property

Gets or sets the value specifying whether the column takes part in grouping and at which level.

Namespace:DevExpress.XtraGrid.Columns
Assembly:DevExpress.XtraGrid.v17.2.dll

Expanded Syntax

Property value

Type: Int32
An integer value specifying the column's position among grouping columns. -1 if the View is not grouped by this column's values.
The default is -1.

Expanded Remarks

Grid Views support data grouping by an unlimited number of columns. To group data by the values of a given column, set the column's GroupIndex property to a non-negative integer. If several columns are involved in grouping, the GroupIndex property specifies the grouping level. If set to 0, the column is at the root grouping level. Note that changing the GroupIndex property value updates this property value for other columns involved in grouping.

Set the GroupIndex property to -1 to cancel grouping by the column's values. To clear grouping completely, call the View's GridView.ClearGrouping method.

As data is grouped by column values, the column is added to the ColumnView.GroupedColumns collection. The GroupIndex property value matches the column's position within that collection.

Expanded See Also

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