Avalonia for Visual Studio
Avalonia is a cross-platform XAML-based UI framework providing a flexible styling system and supporting a wide range of Operating Systems such as Windows via .NET Framework and .NET Core, Linux via Xorg and macOS.
The Avalonia for Visual Studio Extension contains project and control templates that will help you get started. For a starter guide see our documentation.
Support for Older Versions
If you're using VS2019 you need to install the extension for older versions.