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 End-User Documentation
View this topic on docs.devexpress.com (Learn more)

PropertyGridControl.CustomExpand Event

Enables you to control how properties and categories expand.

Namespace:DevExpress.Xpf.PropertyGrid
Assembly:DevExpress.Xpf.PropertyGrid.v19.1.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type CustomExpandEventArgs containing data related to this event.

The following CustomExpandEventArgs properties provide information specific to this event.
Property Description
Handled Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route.
IsExpanded Gets or sets whether the item is expanded.
IsInitializing Gets whether the item is being initialized.
OriginalSource Gets the original reporting source as determined by pure hit testing, before any possible System.Windows.RoutedEventArgs.Source adjustment by a parent class.
RoutedEvent Gets or sets the System.Windows.RoutedEventArgs.RoutedEvent associated with this System.Windows.RoutedEventArgs instance.
Row Gets information about an expanding row.
Source Gets or sets a reference to the object that raised the event.

Expanded Remarks

Handle the CustomExpand event to expand a row (or category). This event fires for each PropertyGridControl item. Set the event arguments' CustomExpandEventArgs.IsExpanded property to true to expand a processed item.

When the CustomExpandEventArgs.IsExpanded property is set to true, end-users cannot collapse items in the PropertyGridControl. Set the IsExpanded property to true only if the processed item is initializing (CustomExpandEventArgs.IsInitializing is true) to allow end-users to collapse the control items.

The code sample below demonstrates how to expand all the items within the control and allow end-users to collapse them:

Expanded See Also

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