Pragma warnings IDE0028, IDE0305, IDE0301 to prefer collection expressions should not pop up when current editor target is less net9

[vsfeedback]

This issue has been moved from a ticket on Developer Community.

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[severity:It bothers me. A fix would be nice]
As https://developercommunity.visualstudio.com/t/IDE0301-Warning-wrong-suggestion/10524090 is closed for upvoting, filing this here to re-enable this as its quite annoying behavior to me from vs2022

If I have net8 + net9 TargetFramework for backwards compartibility reasons, the IDE pragma warnings to prefer collection expressions are popping up also if I set the editor target to net 8 AND use #if like shown in the screenshot added here. I should not be needed to constantly add a #pragma warning disable + restore just that Visual Studio dont mistakenly list them in my Problem List.

Those warnings overflowing in this list can potenially lead to overseeing some warnings that should get addressed and are right to be there

<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
        <TargetFrameworks>net8.0; net9.0</TargetFrameworks>
        <OutputType>Library</OutputType>
        <ImplicitUsings>enable</ImplicitUsings>
        <Nullable>enable</Nullable>
    </PropertyGroup>

Microsoft Visual Studio Community 2022 (64-Bit) - Current
Version 17.14.4
VisualStudio.17.Release/17.14.4+36202.13
Microsoft .NET Framework
Version 4.8.09032

Installierte Version: Community

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Original Comments

Feedback Bot on 6/9/2025, 10:15 PM:

We have directed your feedback to the appropriate engineering team for further evaluation. The team will review the feedback and notify you about the next steps.

Feedback Bot on 6/10/2025, 06:37 AM:

This issue is currently being investigated. Our team will get back to you if either more information is needed, a workaround is available, or the issue is resolved.

[CyrusNajmabadi]

Closing as unplanned. We base what we show on the project configuration you are currently in. There's no interpretation of PP directives, and we do not plan on adding support for that due to the high cost and complexity there.