dotnet/roslyn

Intellisense: "using statement" suggestions are missing for Extension methods for .NET 4.8 Projects when referenced from .NET 6 Projects

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#59,757 opened on Feb 24, 2022

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 (9 comments) (0 reactions) (1 assignee)C# (4,257 forks)batch import
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Description

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

[severity:It's more difficult to complete my work] I found an Intellisense bug that occurs when i reference (OLD) .NET 4.8 Projects from .NET 6 Projects.

Manually importing the Namespace works fine.

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Works for referenced .NET 6 Projects (GOOD)

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Doesn't work for referenced .NET 4.8 Projects (BAD)

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The Example Project to reproduce the issue can be found here: https://github.com/CharlesPublic/BugIntellisense

Original Comments

Feedback Bot on 2/20/2022, 10:20 PM:

Feedback Bot on 2/23/2022, 03:23 PM:

Original Solutions

(no solutions)

Contributor guide

Research direction
Investigate the Intellisense completion provider for extension methods. Look for how namespace import suggestions are generated when referencing assemblies from different .NET versions. Check if the issue is related to the Roslyn's SymbolFinder or CompletionProvider that filters by target framework. Compare the behavior for .NET 6 vs .NET 4.8 references to identify the missing logic.
Tech stack
csharp
Domain
developer experiencetooling
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C#.NETGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60