DockLayoutManager.BeforeItemAdded Event

Fires before an item is added to the current DockLayoutManager object.

Namespace: DevExpress.Xpf.Docking

Assembly: DevExpress.Xpf.Docking.v24.2.dll

NuGet Package: DevExpress.Wpf.Docking

Declaration

C#

public event BeforeItemAddedEventHandler BeforeItemAdded

VB.NET

Public Event BeforeItemAdded As BeforeItemAddedEventHandler

Event Data

The BeforeItemAdded event's data class is DevExpress.Xpf.Docking.Base.BeforeItemAddedEventArgs.

Remarks

Handle the BeforeItemAdded event to specify actions to be performed immediately before an item (the BaseLayoutItem descendant) is added to the current DockLayoutManager. For instance, you might want an additional item validation to be performed before an item is added.