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GridView.SetRowExpanded(Int32, Boolean) Method

Expands or collapses the specified group row.

Namespace: DevExpress.XtraGrid.Views.Grid

Assembly: DevExpress.XtraGrid.v24.1.dll

NuGet Packages: DevExpress.Win.Grid, DevExpress.Win.Navigation


public void SetRowExpanded(
    int rowHandle,
    bool expanded


Name Type Description
rowHandle Int32

An integer value identifying the group row by its handle.

expanded Boolean

true to expand the group row; false to collapse it.


The SetRowExpanded method raises either the GridView.GroupRowExpanding or GridView.GroupRowCollapsing event. These events allow you to prevent the row from being expanded or collapsed respectively. If a row has been expanded or collapsed successfully, the GridView.GroupRowExpanded or GridView.GroupRowCollapsed event is raised respectively.

If the specified handle points to a data row, the method does nothing.

To expand/collapse group rows recursively, use another method overload.

Please refer to the Working with Groups in Code topic for additional information.


Detail pattern Views do not contain data and they are never displayed within XtraGrid. So, the SetRowExpanded member must not be invoked for these Views. The SetRowExpanded member can only be used with Views that display real data within the Grid Control. Use the following methods to access these Views with which an end user interacts at runtime.

See Also