filename multi-targeting documentation has obsolette .NET 8 references in it

[stephenquan]

Now that we're defaulting to .NET 9, the documentation for Configure filename-based multi-targeting has obsolete references in it, i.e. net8.0-android, net8.0-ios, net8.0-maccatalyst and net8.0-windows.

Rather than replacing replacing the net8.0- prefix with net9.0- would the following be a more future-proof representation of that code snippet?

<!-- Android -->
<ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'android'">
  <Compile Remove="**\*.Android.cs" />
  <None Include="**\*.Android.cs" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder)" />
</ItemGroup>

<!-- Both iOS and Mac Catalyst -->
<ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'ios' AND $([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'maccatalyst'">
  <Compile Remove="**\*.MaciOS.cs" />
  <None Include="**\*.MaciOS.cs" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder)" />
</ItemGroup>

<!-- iOS -->
<ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'ios'">
  <Compile Remove="**\*.iOS.cs" />
  <None Include="**\*.iOS.cs" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder)" />
</ItemGroup>

<!-- Mac Catalyst -->
<ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'maccatalyst'">
  <Compile Remove="**\*.MacCatalyst.cs" />
  <None Include="**\*.MacCatalyst.cs" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder)" />
</ItemGroup>

<!-- Windows -->
<ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'windows'">
  <Compile Remove="**\*.Windows.cs" />
  <None Include="**\*.Windows.cs" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder)" />
</ItemGroup>

[stephenquan]

I assume nobody can find fault with the above code snippet, so, I will use it - and - perhaps, raise a doc issue to remove the .NET 8 references with the above?

[softlion]

That's not the only obsolete thing in this snippet. Maui auto configures folder based multi targeting.
An updated snippet would be:

    <Import Project="FilenameBasedMultiTargeting.props" />

where FilenameBasedMultiTargeting.props would be:

<Project>
    <!-- Android -->
    <ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'android'">
        <Compile Remove="**\*.Android.cs" />
        <None Include="**\*.Android.cs" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder)" />
    </ItemGroup>

    <!-- Both iOS and Mac Catalyst -->
    <ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'ios' AND $([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'maccatalyst'">
        <Compile Remove="**\*.MaciOS.cs" />
        <None Include="**\*.MaciOS.cs" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder)" />
    </ItemGroup>

    <!-- iOS -->
    <ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'ios'">
        <Compile Remove="**\*.iOS.cs" />
        <None Include="**\*.iOS.cs" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder)" />
    </ItemGroup>

    <!-- Mac Catalyst -->
    <ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'maccatalyst'">
        <Compile Remove="**\*.MacCatalyst.cs" />
        <None Include="**\*.MacCatalyst.cs" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder)" />
    </ItemGroup>

    <!-- Windows -->
    <ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) != 'windows'">
        <Compile Remove="**\*.Windows.cs" />
        <None Include="**\*.Windows.cs" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder)" />
    </ItemGroup>
</Project>