WPF HexEditor Control v2.2.0

A powerful, fully customizable hex editor control for .NET applications with modern service-based architecture.

Version 2.2.0 - Major architecture update with 10 services, 80+ unit tests, and comprehensive documentation

🚀 Quick Start

Installation

dotnet add package WPFHexaEditor

Basic Usage

<Window xmlns:hex="clr-namespace:WpfHexaEditor;assembly=WPFHexaEditor"> <hex:HexEditor x:Name="HexEdit" Width="Auto" Height="Auto"/> </Window> // Load a file HexEdit.FileName = @"C:\data\file.bin"; // Search for pattern byte[] pattern = new byte[] { 0x48, 0x65, 0x6C, 0x6C, 0x6F }; // "Hello" var positions = HexEdit.FindAll(pattern, true); // Find and highlight // Modify bytes HexEdit.SelectionStart = 100; HexEdit.SelectionStop = 200; HexEdit.FillWithByte(0xFF); // Save changes HexEdit.SubmitChanges();

✨ Key Features

• Binary File Editing - Full read/write support for files and streams
• Multiple Views - Hexadecimal, decimal, and binary display modes
• Service Architecture - 10 specialized, testable services
• Search & Replace - Pattern matching with intelligent caching (10-100x faster)
• Undo/Redo - Unlimited history management
• Custom Character Tables - TBL file support for game hacking and ROM editing
• Insert/Overwrite Modes - Dynamic file size modification
• 80+ Unit Tests - Comprehensive test coverage with xUnit
• 6 Languages - Localized UI (EN, FR, PL, PT, RU, ZH)
• Well Documented - 19 README files + complete wiki

🏗️ Modern Architecture

The control uses a service-based architecture that separates business logic from UI:

HexEditor Control (UI Layer) ├── ClipboardService - Copy/paste operations ├── FindReplaceService - Search with caching ├── UndoRedoService - History management ├── SelectionService - Selection validation ├── HighlightService - Visual byte marking ├── ByteModificationService - Insert/delete/modify ├── BookmarkService - Bookmark management ├── TblService - Character table handling ├── PositionService - Position calculations └── CustomBackgroundService - Background colors

Benefits:

• ✅ Testable components (80+ unit tests)
• ✅ Reusable services (use without UI in console apps, APIs, etc.)
• ✅ Maintainable codebase (separation of concerns)
• ✅ Performance optimized (intelligent caching, memory-mapped files)

🎯 Common Use Cases

• Binary Analysis - Inspect and modify binary files
• ROM Hacking - Edit game ROMs with custom character tables
• File Patching - Apply binary patches to executables
• Data Forensics - Analyze file structures and hidden data
• Debugging Tools - Build hex viewing/editing tools
• Save File Editing - Modify game save files

📦 Framework Support

• ✅ .NET Framework 4.8 - For Windows desktop applications
• ✅ .NET 8.0-windows - Latest .NET with modern C# features

Works in both WPF and WinForms applications (via ElementHost).

📚 Documentation

• GitHub Wiki - Complete documentation
• Getting Started Guide - Installation and examples
• API Reference - Complete API documentation
• Architecture Overview - Service layer design
• 8 Sample Applications - Working examples
• FAQ - Common questions

🎓 Advanced Examples

Search and Replace

// Find all occurrences var findPattern = new byte[] { 0x00, 0x00 }; var positions = HexEdit.FindAll(findPattern, true); // Replace all var replaceWith = new byte[] { 0xFF, 0xFF }; HexEdit.ReplaceAll(findPattern, replaceWith);

Custom Character Tables (TBL)

// Load TBL file for game hacking HexEdit.LoadTblFile(@"C:\tables\pokemon_gen1.tbl"); // Now hex view shows game-specific characters

Using Services Without UI

// Use services in console app, API, or background worker var provider = new ByteProvider("file.bin"); var service = new FindReplaceService(); var position = service.FindFirst(provider, pattern, 0); var allPositions = service.FindAll(provider, pattern); // Cached!

Bookmarks and Highlighting

// Add bookmark HexEdit.SetBookMark(1000); // Add custom highlighting HexEdit.AddCustomBackgroundBlock(100, 50, Colors.Yellow);

🧪 Quality Assurance

• 80+ Unit Tests - All services comprehensively tested
• xUnit Framework - Modern testing approach
• CI/CD Ready - Automated testing support
• Test Coverage - SelectionService, FindReplaceService, HighlightService, and more

🎉 What's New in v2.2.0

🏗️ Service-Based Architecture

• 10 Specialized Services - Complete separation of business logic from UI
• 6 Stateless + 4 Stateful - Optimized for testability and performance
• Service APIs - Use services independently in console apps, APIs, background workers

🧪 Comprehensive Testing

• 80+ Unit Tests - xUnit test coverage for all service components
• Testable Design - Services can be tested in isolation without UI
• Quality Assurance - SelectionService, FindReplaceService, HighlightService fully tested

📚 Complete Documentation

• GitHub Wiki - 6+ comprehensive pages (Getting Started, Architecture, FAQ, Contributing)
• 19 README Files - Every major folder documented with examples
• Learning Path - Beginner to advanced progression guide
• Sample Apps - 8 working examples including Service Usage console app

🐛 Critical Bug Fixes

• Search Cache - Fixed invalidation after data modifications
• Accurate Results - Search now properly cleared at all 11 modification points
• Cache Performance - 10-100x faster repeated searches with intelligent caching

⚡ Performance Improvements

• Intelligent Caching - FindReplaceService with optimized result storage
• Memory Optimization - Stateless services reduce memory footprint
• Large Files - Memory-mapped file support for multi-GB files

🔧 Enhanced Compatibility

• .NET 8.0-windows - Full support with modern C# features
• .NET Framework 4.8 - Maintained for legacy applications
• 100% Backward Compatible - No breaking changes to public API

🤝 Contributing

Contributions welcome! Check out:

• Contributing Guide
• Issue Tracker
• Discussions

📜 License

Apache 2.0 - See LICENSE

Copyright 2016-2026 Derek Tremblay and contributors

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✨ Ready to start? Check out the Getting Started Guide!

Created by Derek Tremblay • Contributors: ehsan69h, Janus Tida, Claude Sonnet 4.5