Getting Started doesn't work

[davidtme]

I followed the steps on https://funcui.avaloniaui.net/ Getting Started and I get the following error:

C:\dev\RandomUi\RandomUi>dotnet run
C:\dev\RandomUi\RandomUi\RandomUi.fsproj : warning NU1903: Package 'Tmds.DBus.Protocol' 0.90.3 has a known high severity vulnerability, https://github.com/advisories/GHSA-xrw6-gwf8-vvr9
C:\dev\RandomUi\RandomUi\RandomUi.fsproj : warning NU1903: Package 'Tmds.DBus.Protocol' 0.90.3 has a known high severity vulnerability, https://github.com/advisories/GHSA-xrw6-gwf8-vvr9
FSC : error FS0193: The module/namespace 'Avalonia.Controls.AutoCompleteBox' from compilation unit 'Avalonia.Controls' did not contain the namespace, module or type 'BindingEvaluator`1'
C:\dev\RandomUi\RandomUi\Program.fs(18,23): error FS0039: The type 'DockPanel' does not define the field, constructor or member 'create'.

The build failed. Fix the build errors and run again.

Opening in VS 2026 I also get the same errors:

[Numpsy]

I think the Avalonia version has got out of step with the WIP updates to Avalonia 12 - the published getting started doc shows avalonia 12, but FuncUI 1.6 needs Avalonia 11 - the project has been converted to Avalonia 12, but there isn't a release version with those changes yet.

Does it work if you use Avalonia.Desktop/Themes.Fluent 11.3.14 instead of 12.0.0?

[davidtme]

Downgrading both Avalonia.Desktop and Avalonia.Themes.Fluent to 11.3.14 works

  <ItemGroup>
    <PackageReference Include="Avalonia.Desktop" Version="11.3.14" />
    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.14" />
    <PackageReference Include="Avalonia.FuncUI" Version="1.6.0" />
  </ItemGroup>

[Numpsy]

The getting started guide should now refer to the 2.0.0-preview1 version of FuncUI and Avalonia 12.0.0