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PivotGridControl.FieldExpandedInGroupChanged Event

Fires after the expansion status of fields combined into a field group has been changed.

Namespace: DevExpress.Xpf.PivotGrid

Assembly: DevExpress.Xpf.PivotGrid.v22.2.dll

NuGet Package: DevExpress.Wpf.PivotGrid


public event PivotFieldEventHandler FieldExpandedInGroupChanged

Event Data

The FieldExpandedInGroupChanged event's data class is PivotFieldEventArgs. The following properties provide information specific to this event:

Property Description
Field Gets the field being processed.
Handled Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs.
OriginalSource Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs.
RoutedEvent Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs.
Source Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.

The event data class exposes the following methods:

Method Description
InvokeEventHandler(Delegate, Object) When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs.
OnSetSource(Object) When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs.


The DXPivotGrid provides the capability to arrange fields into groups. Fields which are grouped, cannot be separated by end-users by dragging one of them to a different area. Grouped fields can be collapsed and expanded by clicking the arrow buttons. Collapsing/expanding a grouped field header hides/shows columns or rows that correspond to grouped child fields. Use the PivotGridField.ExpandedInFieldsGroup property to specify the expansion status of grouped fields in code.


Handle the FieldExpandedInGroupChanged event, to respond to collapsing or expanding a grouped field header. The event parameter’s PivotFieldEventArgs.Field property returns the processed field.

See Also