Implementing Checkboxes in.NET MAUI
The Syncfusion.NET MAUI CheckBox (SfCheckBox) is a selection control that allows users to choose one or more options from a set. It supports three states (checked, unchecked, indeterminate), extensive visual customization, and event-driven state management.
When to Use This Skill
Use this skill when the user needs to:
- Implement checkbox controls in.NET MAUI applications
- Add selection controls for single or multiple choice scenarios
- Create three-state checkboxes with indeterminate state support
- Customize checkbox appearance (colors, shapes, sizes, text)
- Handle checkbox events (StateChanged, StateChanging)
- Apply visual states using VisualStateManager
- Build checkbox groups for multi-select scenarios (e.g., settings, forms, filters)
- Implement parent-child checkbox hierarchies with select-all functionality
- Create terms and conditions acceptance UI
- Add accessible selection controls with MAUI styling
Component Overview
The SfCheckBox control provides:
- Three-state support: Checked, Unchecked, and Indeterminate states
- Visual customization: Colors, corner radius, stroke thickness, tick color
- Text customization: Font, color, alignment, line break modes
- Event handling: StateChanged and StateChanging events
- Visual State Manager: Custom appearance for each state
- Animation control: Enable/disable state change animations
Documentation and Navigation Guide
Getting Started and Installation
📄 Read: references/getting-started.md
When to read: User is setting up SfCheckBox for the first time, needs installation steps, or wants basic implementation examples.
Topics covered:
- Installing Syncfusion.Maui.Buttons NuGet package
- Registering Syncfusion handler (ConfigureSyncfusionCore)
- Basic CheckBox implementation (XAML and C#)
- Setting checkbox caption text
- Understanding three states (Checked, Unchecked, Indeterminate)
- Single checkbox scenarios (terms of service, agreements)
- Multiple checkbox groups (multi-select options)
- Intermediate state with parent-child relationships
- Select-all checkbox patterns
Visual Customization
📄 Read: references/visual-customization.md
When to read: User wants to customize the appearance of checkboxes, change colors, adjust sizes, modify text styling, or control animations.
Topics covered:
- Shape customization (CornerRadius for rounded checkboxes)
- State colors (CheckedColor, UncheckedColor)
- Stroke thickness customization
- Caption text appearance (TextColor, FontFamily, FontSize, FontAttributes, HorizontalTextAlignment)
- Tick color customization
- LineBreakMode options (wrap or truncate text)
- Size customization (ControlSize property)
- Font auto-scaling (FontAutoScalingEnabled)
- Animation control (EnabledAnimation)
- Content spacing between checkbox and text
Events and State Management
📄 Read: references/events.md
When to read: User needs to respond to checkbox state changes, validate selections, or implement custom logic when checkboxes are toggled.
Topics covered:
- StateChanged event and StateChangedEventArgs
- StateChanging event (cancellable before state change)
- Event handling patterns in XAML and C#
- Programmatic state changes
- Event-driven UI updates
- Preventing state changes with Cancel property
- Coordinating multiple checkbox states
Visual States with VisualStateManager
📄 Read: references/visual-states.md
When to read: User wants to apply different visual appearances for checked, unchecked, or indeterminate states using VisualStateManager.
Topics covered:
- Visual State Manager overview for SfCheckBox
- Three visual states (Checked, Unchecked, Intermediate)
- XAML implementation with VisualStateGroups
- C# implementation with VisualState setters
- Customizing properties per state
- Complete examples for each state