DiagramControl.ItemsChanged Event
In This Article
Fires each time an item is added or removed from the diagram.
Namespace: DevExpress.Xpf.Diagram
Assembly: DevExpress.Xpf.Diagram.v24.2.dll
NuGet Package: DevExpress.Wpf.Diagram
#Declaration
public event EventHandler<DiagramItemsChangedEventArgs> ItemsChanged
#Event Data
The ItemsChanged event's data class is DiagramItemsChangedEventArgs. The following properties provide information specific to this event:
Property | Description |
---|---|
Action | Indicates whether the item is being added or removed. |
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 Routed |
Item | Returns the diagram item that is being added or removed from the diagram. |
Original |
Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class.
Inherited from Routed |
Routed |
Gets or sets the Routed |
Source |
Gets or sets a reference to the object that raised the event.
Inherited from Routed |
The event data class exposes the following methods:
Method | Description |
---|---|
Invoke |
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 Routed |
On |
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 Routed |
#Remarks
The ItemsChanged event fires whenever the DiagramControl.Items collection is modified (a document is loaded, a user performs the Undo/Redo actions, etc.).
The event parameter’s DiagramItemsChangedEventArgs.Action property indicates whether the item has been added or removed.
See Also