Implementing.NET MAUI SignaturePad
The.NET MAUI SignaturePad (SfSignaturePad) is an interactive UI control that enables users to capture smooth, realistic digital signatures. It supports finger, pen, or mouse input on tablets, touchscreens, and other devices, providing a natural signing experience with customizable stroke appearance and advanced features.
When to Use This Skill
Use this skill when users need to:
- Capture digital signatures in.NET MAUI applications for documents, forms, or authentication
- Implement signature functionality for contracts, agreements, invoices, or any document requiring signatures
- Save signatures as images to embed in PDFs, documents, or databases
- Customize signature appearance with specific colors, thickness ranges, or visual styles
- Handle signature events for validation, processing, or workflow control
- Retrieve signature point data for advanced analysis or custom rendering
- Integrate with document signing workflows where electronic signatures are required
- Apply modern UI effects like Liquid Glass Effect for premium signature experiences
The SignaturePad provides a unique stroke rendering algorithm that creates realistic, handwritten signatures based on drawing speed and gesture pressure, offering a more authentic signing experience than simple drawing controls.
Component Overview
Key Features:
- Realistic Handwriting: Dynamic stroke thickness based on drawing speed and pressure
- Stroke Customization: Configure color, minimum/maximum thickness, and appearance
- Image Export: Save signatures as
ImageSourcefor document integration - Point Data Retrieval: Access raw signature points as
List<List<float>>for custom processing - Event Handling: Respond to drawing start/completion, with cancellation support
- Clear Functionality: Reset the signature pad programmatically
- Modern Effects: Support for Liquid Glass Effect on compatible platforms
- Cross-Platform: Consistent behavior across iOS, Android, macOS, and Windows
Documentation and Navigation Guide
Getting Started
📄 Read: references/getting-started.md
Use this reference when you need to:
- Set up the SignaturePad in a new.NET MAUI project
- Install the
Syncfusion.Maui.SignaturePadNuGet package - Register Syncfusion handlers in
MauiProgram.cs - Create a basic SignaturePad in XAML or C#
- Learn the minimal implementation setup
Stroke Customization
📄 Read: references/stroke-customization.md
Use this reference when you need to:
- Change the signature stroke color (
StrokeColor) - Set minimum and maximum stroke thickness for realistic rendering
- Use simple stroke width for uniform appearance
- Configure background color or transparency
- Understand the realistic handwriting algorithm
- Learn best practices for stroke appearance
- Decide between
StrokeWidthvsMinimumStrokeThickness/MaximumStrokeThickness
Saving and Retrieving Signatures
📄 Read: references/saving-signatures.md
Use this reference when you need to:
- Save signatures as images using
ToImageSource() - Export signatures to file system or databases
- Retrieve signature point data with
GetSignaturePoints() - Work with the
List<List<float>>point data structure - Integrate signatures with PDFs or documents
- Implement save/load workflows
- Handle synchronization across devices
- Manage image format considerations
Events and Methods
📄 Read: references/events-and-methods.md
Use this reference when you need to:
- Handle the
DrawStartedevent to validate or restrict drawing - Use
CancelEventArgsto prevent signature drawing - Respond to
DrawCompletedevent for post-drawing processing - Implement the
Clear()method to reset signatures - Create validation workflows with event handling
- Build event-driven signature capture processes
- Understand event sequencing and lifecycle
Advanced: Liquid Glass Effect
📄 Read: references/liquid-glass-effect.md
Use this reference when you need to:
- Apply Liquid Glass Effect for modern, translucent UI design
- Wrap SignaturePad in
SfGlassEffectView - Configure transparency and glass effect properties
- Understand platform requirements (.NET 10, iOS 26, macOS 26)
- Implement premium visual experiences
- Customize glass effect appearance