TabbedGroup Class

A tabbed group of dock panels (LayoutPanel objects).

Namespace: DevExpress.Xpf.Docking

Assembly: DevExpress.Xpf.Docking.v21.1.dll


public class TabbedGroup :


The TabbedGroup object displays its child items as tab pages:



TabbedGroups display tabs only at the container’s bottom. Use the DocumentGroup class to display tabs at the top.

Create TabbedGroups


The following code sample creates a TabbedGroup that contains three LayoutPanels:

    <dxdo:LayoutGroup Caption="LayoutRoot">
        <dxdo:LayoutPanel Caption="Error List"/>
        <dxdo:LayoutPanel Caption="Output"/>
        <dxdo:LayoutPanel Caption="Find Results"/>

DockLayoutManager - TabbedGroup

In Code

The following code sample creates a TabbedGroup that contains Tools, Errors, and Output LayoutPanels:

TabbedGroup tabbedgroup = new TabbedGroup();
DockLayoutManager1.DockController.Dock(tabbedgroup, rootgroup , DockType.Fill);
LayoutPanel toolspanel = DockLayoutManager1.DockController.AddPanel(DockType.None);
toolspanel.Caption = "Tools";
LayoutPanel errorspanel = DockLayoutManager1.DockController.AddPanel(DockType.None);
errorspanel.Caption = "Errors";
LayoutPanel outputpanel = DockLayoutManager1.DockController.AddPanel(DockType.None);
outputpanel.Caption = "Output";
DockLayoutManager1.DockController.Dock(toolspanel, tabbedgroup, DockType.Fill);
DockLayoutManager1.DockController.Dock(errorspanel, tabbedgroup, DockType.Fill);
DockLayoutManager1.DockController.Dock(outputpanel, tabbedgroup, DockType.Fill);

DockLayoutManager - TabbedGroup

Child Items

The TabbedGroup object can contain the LayoutPanel child object.


Use the LayoutGroup.SelectedTabIndex property to display a specific tab.

Add Child Items In Code

Create a LayoutPanel object and use the Add method to add the LayoutPanel to the TabbedGroup‘s Items collection.

LayoutPanel layoutpanel = DockLayoutManager1.DockController.AddPanel(DockType.None);
layoutpanel.Caption = "Tools";
DockLayoutManager1.DockController.Dock(layoutpanel, tabbedgroup, DockType.Fill);

Customize TabbedGroups

Single Tab Header

Use the ShowTabForSinglePage property to specify whether the TabbedGroup should display a single child panel’s tab header.

Tab Header Style

Use the TabHeaderLayoutType property to specify a TabbedGroup‘s header style.

DockLayoutManager - TabHeaderLayoutType

Tab Content Cache

Use the TabContentCacheMode property to specify the TabbedGroup‘s content cache mode.


Use the ItemHeight and ItemWidth properties to specify the TabbedGroup‘s height and width.

AutoScroll on Overflow

Use the AutoScrollOnOverflow property to specify how the TabbedGroup‘s headers are scrolled when they cannot fit into the header panel area.

Operations with TabbedGroups

Use the following DockLayoutManager.DockController object’s methods to control a TabbedGroup:

Method Description
AddPanel Creates a LayoutPanel and docks it at the specified side of the DockLayoutManager container (root group). The method’s DockType parameter must be set to DockType.Fill to create a Tabbed Group.
Close(BaseLayoutItem) Closes the specified item.
CloseAllButThis(BaseLayoutItem) Closes all items except the specified one within this item’s container.
Dock Docks the specified item. This method is in effect for newly created, floating, auto-hidden, or closed (hidden) items.
Float(BaseLayoutItem) Makes the specified item floating.
Hide Enables the auto-hide mode for the item/panel and hides it at a corresponding edge of the DockLayoutManager container.
Insert(LayoutGroup, BaseLayoutItem, Int32) Inserts the specified item into the specified group at a specific position.
Rename(BaseLayoutItem) Starts dock item renaming.
Restore(BaseLayoutItem) Restores a closed (hidden) panel at its previous dock position.


Set the BaseLayoutItem.AllowDock property to true to allow dock operations.


You can use the following DockLayoutManager‘s events to control a dock element at runtime:

Event Description
DockItemActivated Fires after a dock item has been activated.
DockItemActivating Fires before a dock item is activated, and allows you to prevent this action.
DockItemClosed Fires after a dock item has been closed (hidden).
DockItemClosing Fires before a dock item is closed (hidden), and allows you to prevent this action.
DockItemCollapsed Fires after a visible auto-hidden dock panel has slid away.
DockItemDocking Fires before a dock item is dragged over dock hints, and allows you to prevent dock zones from being displayed.
DockItemDragging Fires repeatedly while a dock panel is being dragged.
DockItemEndDocking Fires after a dock item has been dropped, and allows you to prevent this action.
DockItemExpanded Fires after a hidden auto-hidden dock panel has slid out.
DockItemHidden Fires after a dock item has been made auto-hidden.
DockItemHiding Fires before a dock item is auto-hidden, and allows you to prevent this action.
DockItemRestored Fires after a dock item has been restored from the closed (hidden) state.
DockItemRestoring Fires before a dock item is restored from the closed (hidden) state, and allows you to prevent this action.
DockItemStartDocking Fires when a docking operation starts, and allows you to prevent this operation.


See Also