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[C# 15-Errors and warnings]: Extension indexers #54657

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[C# 15-Errors and warnings]: Extension indexers#54657
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BillWagner
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🏁 Release: .NET 11Work related to .NET 11📌 seQUESTeredIdentifies that an issue has been imported into Quest.dotnet-csharp/svcokr-curationOKR: Curate content to remove outdated recommendationswhats-new/subsvc

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@BillWagner
BillWagner
opened on Jul 6, 2026

.NET 11 Preview

.NET 11 Preview 6

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Errors and warnings added for this feature

Update the diagnostic page with new errors related to extension members and containers with the updated diagnostics added for this release.

What language theme applies, for consolidation of articles

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Associated WorkItem - 595284

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🏁 Release: .NET 11Work related to .NET 11📌 seQUESTeredIdentifies that an issue has been imported into Quest.dotnet-csharp/svcokr-curationOKR: Curate content to remove outdated recommendationswhats-new/subsvc

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dotnet/docs July 2026 Sprint Project
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