Main enhancements
First public release of AlterNET Studio X - introducing a new generation of cross-platform libraries for code editing and scripting.
Visual Studio 2026 integration - a new Visual Studio extension that brings AlterNET Studio capabilities directly into Visual Studio 2026.
Full support for .NET 10 across all AlterNET component libraries.
Cross-platform .NET Script Debugger - a new universal script debugger supporting Windows, macOS, and Linux.
Below is a list of changes in this release:
AlterNET Studio
+ Added a Visual Studio 2026 extension, enabling AlterNET Studio integration with Visual Studio 2026.
+ Added .NET 10 support across all AlterNET component libraries.
+ Updated the licensing model to provide reliable license validation for .NET Core projects.
- Fixed an issue where icons for AlterNET Studio components and controls were missing in the Visual Studio Toolbox
- Fixed issues with installing AlterNET Studio via command-line mode.
Code Editor
+ Added CodeLens functionality to C# and Visual Basic Roslyn parsers, enabling inline code insights.
+ Added support for live text preview in the Code Editor without modifying the underlying text.
+ Optimized painting performance in the WinForms Code Editor.
+ Added the new SkiaSyntaxEdit WinForms control with support for fast Skia and OpenGL rendering.
+ Improved Code Action icons for the Code Editor when using dark theme
+ Added theme-specific colors for the search and replace dialogs in WinForms and WPF text editor to highlight the input field border when no matches are found.
+ Added support for resizing the Code Completion window in the WPF Text Editor.
+ Updated the Search/Replace dialog to use a custom ComboBox control with additional features, including highlighting the input border when text is not found.
+ Added code completion options to the Text Editor control, allowing configuration of features such as InfoTips and CodeLens display.
+ KnownTypes and KnownFunctions colors can now be configured through visual themes.
+ Updated the current line highlighting appearance to match Visual Studio.
+ Added categorized display support for PowerFX parser code completion.
- Fixed an issue where code completion icons were rendered too large on high-DPI displays.
- Fixed a memory leak related to the Bookmark Manager in the WPF TextEditor.
- Fixed an issue with cursor size on high-DPI displays.
- Fixed an issue with copying/pasting and dragging rectangular blocks if under .NET 8/9/10.
- Fixed an issue where searching and replacing a word that appears in the text only once produced incorrect behaviour in the text editor.
Syntax Parsers
+ Updated Roslyn parsers to use the latest Microsoft.CodeAnalysis libraries version 5.6.0.
+ Added XmlSchemaSet support to XmlParserWithSchema, allowing multiple schemas to be specified for code completion and diagnostics.
+ Added support for changing the language at design time for the TextMate parser.
+ Added support for parsing C# top-level statements (without type or method declarations) in the Advanced C# Parser.
+ Added support for code completion categories in the PowerFX parser.
- Fixed an issue with tuple parsing in the Advanced C# parser.
Scripter
+ Added a cross-platform debugger for debugging C# and Visual Basic scripts on Windows, macOS, and Linux.
+ Enabled embedding of Portable PDB debug information in compiled executables.
+ Added support for recursively resolving referenced assemblies during compilation, controlled by the ResolveRecursiveReferences property.
+ Scripter now copies native libraries when resolving NuGet package references, if required.
+ Extended Scripter with HasType, FindType, RunMethod, and RunMethodAsync methods, allowing inspection and execution of compiled assemblies.
+ Localized debugger UI control text and captions for all supported non-English languages.
- Resolved a bug that prevented solutions containing dynamic library projects from compiling correctly.
- Fixed an issue with debugger evaluation when script debugger debugs a script compiled against a different version of .NET Framework or .NET.
Form Designer
+ Added support for creating UserControl instances programmatically.
- Fixed an issue where the Name property was read-only in PropertyGrid on .NET 8 and .NET 9.
- Fixed the default size of controls dropped from the Toolbox on high-DPI displays.
Cross-platform
+ Code Editor and Scripter for AlterNET UI/MAUI are now available as a first public release.
+ Added Scripter and Script Debugger sample projects targeting AlterNET UI/MAUI.
+ Visual Basic scripts can now run on macOS.
+ TypeScript and JavaScript scripts can now run on macOS and Linux.
+ Added a typed GlobalItem for the Python Scripter engine, allowing application objects to be accessed from Python scripts.
+ Implemented all common Script Debugger UI controls for Alternet UI/MAUI.
-Fixed minor rendering issues in the AlterNET UI/MAUI Code Editor.
Demo Projects
+ Added Copilot demos for C# and Python showing how Copilot chat and Copilot code suggestions can be integrated with the Code Editor.
+ Improved dark theme support in AlterNET UI/MAUI demo projects.
+ Added a TypeScript demo project demonstrating how to run lightweight TypeScript scripts with minimal dependencies.
+ Project files can now be opened in the AlterNET Studio demo using read-only mode.
+ Added an .editorconfig file containing AlterNET Software source code formatting rules to the demos folder in the installation.
+ Improved DebuggerIntegration by displaying error messages when a script encounters runtime errors.
+ Reorganized the main and context menus in the AlterNET Studio demo.
+ Added a Scripter demo demonstrating various script execution methods using Run, RunAsync, and RunMethod.
- Fixed toolbar icons in demo projects for the dark theme.
-Fixed an issue with saving projects containing duplicate references in AlterNET Studio demo.
-Fixed an issue with opening .settings files in the AlterNET Studio demo.
-Fixed an issue with syntax errors appearing after reopening .XAML files.