avalonia-versions
Installation
SKILL.md
Avalonia Versions & Feature Matrix
Supported Versions
| Line | Latest patch | Released | .NET | Status |
|---|---|---|---|---|
| 12.1 | 12.1.4 | 12.1.0: Jul 2026 | net8.0+ (net10.0 recommended; required for Android/iOS) | Current stable — default for new projects |
| 12.0 | 12.0.5 | 12.0.0: Apr 2026 | same as 12.1 | Supported — drop-in upgrade to 12.1 |
| 11.3 | 11.3.22 | — | netstandard2.0 / net6.0+ / .NET Framework | Legacy — maintenance only; plan migration |
Versions older than 11.3 are out of scope; treat them like 11.3 but expect missing APIs.
Step 1 — Detect the Project's Version
Before writing code, find the version. Search in this order:
Directory.Packages.props→<PackageVersion Include="Avalonia" Version="..."/>*.csproj→<PackageReference Include="Avalonia" Version="..."/>Directory.Build.props→ anAvaloniaVersionproperty or similardotnet list package | grep -i avalonia