syncfusion-wpf-navigation-pane

name	syncfusion-wpf-navigation-pane
description	Implement Syncfusion WPF GroupBar (Navigation Pane) for Outlook-style expandable category navigation. Use this when creating a navigation pane, GroupBar, sidebar with collapsible sections, or stack-mode navigation in WPF. Covers item hierarchy, visual modes, data binding, drag-and-drop, orientation, behavior, appearance, and themes.
metadata	{"author":"Syncfusion Inc","version":"34.1.29"}

Implementing WPF GroupBar (Navigation Pane)

The GroupBar control implements a navigation pane similar to the Microsoft Outlook Bar. It hosts categorized collections of items and custom controls in expandable/collapsible sections. Supports multiple visual modes, data binding, drag-and-drop reordering, context menus, toolbars, and full theme support.

Assemblies: Syncfusion.Tools.WPF + Syncfusion.Shared.WPF
Namespace: Syncfusion.Windows.Tools.Controls
XAML Schema: xmlns:syncfusion="http://schemas.syncfusion.com/wpf"

Control Hierarchy

GroupBar                    ← Root navigation container
└── GroupBarItem            ← Category tab/header (e.g., "Mailbox", "Contacts")
    ├── GroupView           ← List container for link-style items
    │   └── GroupViewItem   ← Clickable item with text and icon
    └── Panel / any UIElement ← Or use any WPF panel as content

When to Use This Skill

• User wants an Outlook-style navigation sidebar or accordion panel
• User needs expandable/collapsible sections with content inside
• User asks about GroupBar, GroupBarItem, GroupView, GroupViewItem
• User needs StackMode (Outlook bar), MultipleExpansion (tree-view), or Default mode
• User needs data-bound navigation items using MVVM
• User asks about drag-and-drop reordering of navigation items
• User asks about Navigation Pane popup, gripper, or resize behavior

Quick Start

xmlns:syncfusion="http://schemas.syncfusion.com/wpf"

<syncfusion:GroupBar Height="300" Width="230" VisualMode="StackMode" Name="groupBar">
    <syncfusion:GroupBarItem Header="Mailbox" HeaderImageSource="Images/mail.png">
        <syncfusion:GroupView>
            <syncfusion:GroupViewItem Text="Inbox"     ImageSource="Images/inbox.png"/>
            <syncfusion:GroupViewItem Text="Sent Items" ImageSource="Images/sent.png"/>
            <syncfusion:GroupViewItem Text="Deleted"   ImageSource="Images/trash.png"/>
        </syncfusion:GroupView>
    </syncfusion:GroupBarItem>
    <syncfusion:GroupBarItem Header="Contacts">
        <syncfusion:GroupView>
            <syncfusion:GroupViewItem Text="All Contacts"/>
            <syncfusion:GroupViewItem Text="Favorites"/>
        </syncfusion:GroupView>
    </syncfusion:GroupBarItem>
</syncfusion:GroupBar>

using Syncfusion.Windows.Tools.Controls;

GroupBar groupBar = new GroupBar();
groupBar.VisualMode = VisualMode.StackMode;

GroupBarItem item = new GroupBarItem { Header = "Mailbox" };
GroupView view = new GroupView();
view.Items.Add(new GroupViewItem { Text = "Inbox" });
item.Content = view;
groupBar.Items.Add(item);
this.Content = groupBar;

Common Patterns

Goal	Approach
Outlook-style navigation	VisualMode="StackMode"
Tree-style multi-expand	VisualMode="MultipleExpansion"
One-at-a-time expand	VisualMode="Default"
Collapsible bar	AllowCollapse="True" + VisualMode="StackMode"
Data-bound items	ItemsSource + ItemContainerStyle with HeaderText/Content setters
Custom item content	Place any Panel or UIElement as GroupBarItem.Content
List-view style items	GroupView with IsListViewMode="True"
Drag-reorder items	DragItemVisibility="True"
Resize navigation popup	PopupResizeDirection="Both"
Gripper for StackMode	ShowGripper="True" + VisualMode="StackMode"
Save/restore bar state	SaveBarState() / LoadBarState() / ResetBarState()

Key Properties

Property	Type	Description
VisualMode	VisualMode	Default / MultipleExpansion / StackMode
AllowCollapse	bool	Allow collapsing (StackMode)
ShowGripper	bool	Show resize gripper (StackMode)
ItemsSource	IEnumerable	Data-bound items
ItemContainerStyle	Style	Style applied to each GroupBarItem
DragItemVisibility	bool	Enable drag-and-drop reordering
DragMarkerBrush	Brush	Color of drag insertion marker
PopupResizeDirection	PopupResizeDirection	Navigation pane popup resize (Both/H/V/None)
ItemContentLength	double	Height/width of selected item content area
GroupBarHeaderStyle	Style	Style for GroupBar header border
GroupBarItem.Header	string	Display text for item header
GroupBarItem.HeaderImageSource	ImageSource	Icon in item header
GroupBarItem.IsSelected	bool	Expand this item initially
GroupBarItem.GroupBarItemCornerRadius	CornerRadius	Rounded corners on item header
GroupView.IsListViewMode	bool	List-view style (vs icon style)
GroupViewItem.Text

---

Documentation and Navigation Guide

Getting Started

📄 Read: references/getting-started.md

• Assembly references (Tools.WPF + Shared.WPF)
• Add via designer, XAML, or C#
• Declarative GroupBarItems with GroupView content
• Adding panel content to GroupBarItem
• Basic VisualMode overview
• Themes with SfSkinManager

GroupBar Items

📄 Read: references/groupbar-items.md

• GroupBarItem properties (Header, HeaderText, HeaderImageSource)
• IsSelected, ShowInGroupBar, GroupBarItemCornerRadius
• GroupBarItemCursorType (Default/Hand)
• ItemContentLength (content area height/width)
• DraggingItemInProgress, HiddenItemsCount
• GroupBarItemAdded / GroupBarItemRemoved events

GroupView and Content

📄 Read: references/groupview-and-content.md

• GroupView as item container with GroupViewItem elements
• GroupViewItem (Text, ImageSource, tooltip)
• IsListViewMode (list vs icon display)
• Default image for GroupViewItem
• Adding panels and custom UIElements as content
• Rotating item content

Visual Modes

📄 Read: references/visual-modes.md

• Default mode (one item expanded at a time)
• MultipleExpansion mode (tree-view style)
• StackMode (Outlook bar style, popup menu at bottom)
• AllowCollapse, ShowGripper
• ThemeStudio vs classic theme layout difference in StackMode

Data Binding

📄 Read: references/data-binding.md

• ItemsSource + ItemContainerStyle with HeaderText/Content setters
• Model + ViewModel with ObservableCollection
• DataContext binding pattern
• Data binding with XML (XmlDataProvider)
• HeaderTemplate and ContentTemplate customization
• ItemContainerStyleSelector for conditional styles

Orientation and Layout

📄 Read: references/orientation-and-layout.md

• GroupBar orientation (Horizontal/Vertical)
• GroupView and GroupViewItem orientation
• Adjusting GroupBar width, changing header height
• Rotating the GroupBar
• FlowDirection for RTL support
• Navigation Pane: PopupResizeDirection, ShowGripper

Behavior and Features

📄 Read: references/behavior-and-features.md

• Drag-and-drop reordering (DragItemVisibility, DragMarkerBrush)
• Built-in context menu (sort, add, rename, move)
• Toolbars inside GroupBar
• Tooltip for GroupViewItems
• Animation for expand/collapse
• Collapsing and closing in StackMode
• State persistence (SaveBarState/LoadBarState/ResetBarState)
• Localization

Appearance

📄 Read: references/appearance.md

• GroupBarHeaderStyle (background, corner radius, height)
• CollapseButtonTemplate and CollapseButtonBackground
• ItemContainerStyle (HeaderTemplate + ContentTemplate)
• ItemContainerStyleSelector
• DragMarkerBrush
• SfSkinManager themes table
• ThemeStudio custom themes