# Syncfusion Maui Treeview > Implements and customize Syncfusion .NET MAUI TreeView (SfTreeView) for displaying hierarchical data structures. Use when working with TreeView, hierarchical data display, tree structures, organizational charts, nested data, expand/collapse nodes, file explorer UI, folder structures, parent-child relationships, or multi-level data visualization in .NET MAUI applications. - Skill: `gabrielmoreira/syncfusion-maui-treeview` (Agent Skill, multi-file: 18 files) - Install (CLI): `npx skillmds@latest add gabrielmoreira/syncfusion-maui-treeview` - Raw SKILL.md: https://api.skillmd.com/api/skills/gabrielmoreira/syncfusion-maui-treeview/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: gabrielmoreira (https://skillmd.com/u/gabrielmoreira) - Updated: 2026-09-09 - Page: https://skillmd.com/skills/gabrielmoreira/syncfusion-maui-treeview --- # Implementing Syncfusion .NET MAUI TreeView The Syncfusion .NET MAUI TreeView (SfTreeView) is a powerful data-oriented control for displaying hierarchical data structures such as organizational charts, file systems, nested connections, and multi-level data. It provides intuitive expand/collapse functionality, multiple selection modes, drag-and-drop support, and extensive customization options. ## When to Use This Skill Use this skill when implementing: - **Hierarchical Data Display**: Organizational structures, file explorers, category trees, nested menus - **Interactive Tree Navigation**: Expandable/collapsible nodes, multi-level browsing - **Data Binding Scenarios**: Bound mode with ItemsSource or unbound mode with manual nodes - **Selection Requirements**: Single, multiple, or extended selection in tree structures - **Custom Tree UI**: Templated nodes, custom expanders, styled tree items - **Advanced Tree Features**: Drag-drop reordering, filtering, sorting, load on demand - **MVVM Applications**: TreeView with commands, data binding, and ViewModel patterns ## Component Overview **Key Capabilities:** - Enhanced performance with optimized view-reusing strategy - Bound and unbound data modes - Multiple selection modes with keyboard navigation - Item and expander templating - Expand/collapse with animations - Drag-and-drop node reordering - Filtering and sorting support - Load on demand for large datasets - MVVM pattern support - RTL (right-to-left) support - Customizable appearance and styling ## Documentation and Navigation Guide ### Getting Started 📄 **Read:** [references/getting-started.md](references/getting-started.md) **When to read:** Setting up TreeView for the first time, initial configuration, basic implementation **Covers:** - Installing Syncfusion.Maui.TreeView NuGet package - Registering Syncfusion handler in MauiProgram.cs - Creating a basic TreeView control - First working example - Running and testing the application --- ### Data Binding and Population 📄 **Read:** [references/data-binding.md](references/data-binding.md) **When to read:** Populating TreeView with data, choosing between bound/unbound modes, hierarchical data structures **Covers:** - Bound vs unbound modes comparison - Creating nodes without data source (unbound mode with TreeViewNode) - Data binding with ItemsSource (bound mode) - Defining hierarchical data models - Using HierarchyPropertyDescriptors for complex hierarchies - ChildPropertyName configuration - Self-relational data structures - ObservableCollection integration --- ### Selection 📄 **Read:** [references/selection.md](references/selection.md) **When to read:** Implementing node selection, handling selection events, customizing selection appearance **Covers:** - Selection modes: Single, SingleDeselect, Multiple, Extended, None - SelectedItem, CurrentItem, and SelectedItems properties - SelectionChanging and SelectionChanged events - SelectionBackground and SelectionForeground customization - Keyboard navigation (WinUI, MacCatalyst) - Programmatic selection - Selection validation and cancellation --- ### Node Expansion and Collapse 📄 **Read:** [references/expand-collapse.md](references/expand-collapse.md) **When to read:** Configuring expand/collapse behavior, handling expansion events, initial node states **Covers:** - AutoExpandMode options (None, AllNodes, RootNodes, specific levels) - ExpandActionTarget (Expander, Node) - Programmatic expand/collapse methods - NodeExpanding and NodeCollapsing events - IsExpanded property for individual nodes - Expand/collapse animations - Event cancellation and validation --- ### Templating and Customization 📄 **Read:** [references/templating.md](references/templating.md) **When to read:** Customizing node appearance, creating custom expanders, designing tree item UI **Covers:** - ItemTemplate for node content customization - ExpanderTemplate for custom expand/collapse icons - ItemTemplateContextType (Node vs Data binding context) - DataTemplate creation and binding - Mixing images, text, and custom controls - Template selectors for conditional templates - Advanced templating patterns --- ### Drag and Drop 📄 **Read:** [references/drag-and-drop.md](references/drag-and-drop.md) **When to read:** Enabling node reordering, implementing drag-drop functionality, customizing drag behavior **Covers:** - Enabling AllowDragging property - DragStarting, DragOver, and Drop events - Reordering nodes within the tree - Drag restrictions and validation - Visual feedback during drag operations - Custom drag templates - Handling drag between different levels --- ### Filtering 📄 **Read:** [references/filtering.md](references/filtering.md) **When to read:** Filtering tree nodes, implementing search functionality, showing/hiding nodes based on criteria **Covers:** - FilterLevel property (Root, All, Extended) - Filter predicates and expressions - Filtering hierarchical data - Clearing and updating filters - Dynamic filtering with ObservableCollection - Performance considerations --- ### Sorting 📄 **Read:** [references/sorting.md](references/sorting.md) **When to read:** Sorting tree nodes, custom sort logic, multi-level sorting **Covers:** - SortComparer configuration - Sorting hierarchical data at each level - Custom IComparer implementations - Ascending/descending order - Sorting with data binding - Performance optimization for large trees --- ### Styling and Appearance 📄 **Read:** [references/styling-appearance.md](references/styling-appearance.md) **When to read:** Customizing visual appearance, adjusting spacing and indentation, applying themes **Covers:** - Item height customization (ItemHeight property) - Indentation settings for nested levels - Liquid glass effect styling - RTL (right-to-left) support - Background and foreground colors - Border and padding customization - Theme integration --- ### MVVM Support 📄 **Read:** [references/mvvm-support.md](references/mvvm-support.md) **When to read:** Implementing TreeView with MVVM pattern, using commands and data binding **Covers:** - ViewModel setup for TreeView - INotifyPropertyChanged implementation - Command binding for node actions - Data-bound ItemsSource - Selection binding in MVVM - Event-to-command patterns - Best practices for MVVM architecture --- ### Checkbox Support 📄 **Read:** [references/checkbox-support.md](references/checkbox-support.md) **When to read:** Adding checkboxes to nodes, handling checked/unchecked states, recursive checkbox modes **Covers:** - Checkbox in bound mode with CheckedItems - Checkbox in unbound mode with IsChecked property - CheckBoxMode property (Recursive, Cascade, None) - Working with checked items collection - Programmatic checkbox state management - Best practices for checkbox implementation --- ### Load on Demand 📄 **Read:** [references/load-on-demand.md](references/load-on-demand.md) **When to read:** Implementing lazy loading of child nodes, handling large datasets, API-based hierarchies **Covers:** - Load on Demand implementation with LoadOnDemandCommand - ShowExpanderAnimation for loading feedback - PopulateChildNodes method - Avoiding duplicate loading - API-based lazy loading patterns - Performance optimization with lazy loading --- ### Scrolling and Navigation 📄 **Read:** [references/scrolling-navigation.md](references/scrolling-navigation.md) **When to read:** Programmatic scrolling, bringing items into view, keyboard navigation **Covers:** - BringIntoView method with all overloads - Scroll position options (Start, Center, End, MakeVisible) - Scroll animation control - Horizontal scrolling configuration - Scrollbar visibility control - Keyboard navigation (arrow keys, Tab) - Events (Loaded, ItemTapped, ItemDoubleTapped, ItemRightTapped) --- ### Item Height Customization 📄 **Read:** [references/item-height-customization.md](references/item-height-customization.md) **When to read:** Customizing node heights, dynamic sizing, content-based measurements **Covers:** - Static ItemHeight property - QueryNodeSize event for per-item heights - NodeSizeMode property (Dynamic vs None) - GetActualNodeHeight method - Dynamic height calculation - Performance considerations --- ### Empty View 📄 **Read:** [references/empty-view.md](references/empty-view.md) **When to read:** Displaying empty states, customizing no-data UI, template-based empty views **Covers:** - Display string message when empty - Display custom views in empty state - EmptyViewTemplate for templated empty views - Trigger conditions for empty view - Binding in empty view templates - Search/filter empty state patterns --- ### Advanced Features 📄 **Read:** [references/advanced-features.md](references/advanced-features.md) **When to read:** Implementing load on demand, performance optimization, advanced TreeView operations **Covers:** - Load on demand for large datasets - Empty view customization (EmptyView property) - Scrolling configuration and optimization - Working with TreeViewNode programmatically - Checkbox support - Events --- ### Troubleshooting 📄 **Read:** [references/troubleshooting.md](references/troubleshooting.md) **When to read:** Debugging issues, resolving errors, optimization problems **Covers:** - Common TreeView issues and solutions - Performance troubleshooting - Data binding problems - Selection not working - Template rendering issues - Expand/collapse problems - Memory leaks and optimization - Best practices checklist ---