DockPanel.Collapsing Event

Occurs when the current auto-hidden DockPanel is about to hide.

Namespace : DevExpress.XtraBars.Docking

Assembly : DevExpress.XtraBars.v25.2.dll

NuGet Package : DevExpress.Win.Navigation

Declaration

C#
VB.NET

csharp

public event DockPanelEventHandler Collapsing

Public Event Collapsing As DockPanelEventHandler

Event Data

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

Property	Description
Panel	Gets the processed dock panel.

Remarks

Use the BaseDockOptions.ShowAutoHideButton property to specify whether an end-user can enable/disable auto-hiding a panel at runtime. The Collapsing occurs at the very beginning of panel hiding. After it is completely hidden, the DockPanel.Collapsed event occurs. The DockPanel.Expanding and DockPanel.Expanded event are opposite events, fired when a hidden auto-hide panel is shown.

The DockManager‘s DockManager.Collapsing event is the global version of the Collapsing event, and occurs when any DockPanel is about to hide.