DiagramControl.ContainerIsCollapsedChanged Event

Occurs when the container’s collapsed state has been changed.

Namespace: DevExpress.Xpf.Diagram

Assembly: DevExpress.Xpf.Diagram.v26.1.dll

NuGet Package: DevExpress.Wpf.Diagram

Declaration

C#

public event EventHandler<DiagramContainerIsCollapsedChangedEventArgs> ContainerIsCollapsedChanged

VB.NET

Public Event ContainerIsCollapsedChanged As EventHandler(Of DiagramContainerIsCollapsedChangedEventArgs)

Event Data

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

Property	Description
Container	The container item whose IsCollapsed property value has been changed.
DiagramContainer
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.
NewValue	The new value of the IsCollapsed property.
OldValue	The previous value of the IsCollapsed property.
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.