Updates for C# 14 reaching GA #49940
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LangVersion of preview shouldn't be needed anywhere now
cremor
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Nov 18, 2025
C# 14 is G.A. The `field` keyword is no longer a preview feature. Make those updates.
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Pull Request Overview
This PR updates documentation and code snippets to reflect that C# 14 has reached General Availability (GA). The changes remove preview-related language and configuration, and update version references for the field keyword feature from C# 13 to C# 14.
Key changes include:
- Removing
<LangVersion>preview</LangVersion>from all .csproj files across the documentation - Updating target frameworks from net8.0/net9.0 to net10.0 where appropriate
- Updating references to Visual Studio from 2022 to 2026
- Removing the field-preview.md include file and all references to it
- Updating documentation to state that the
fieldkeyword was added in C# 14 (not C# 13 preview)
Reviewed Changes
Copilot reviewed 26 out of 26 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| orleansurlshortener.csproj | Removed LangVersion preview and updated to net10.0 |
| CompoundAssignment.csproj | Removed LangVersion preview |
| csharp-14.md | Updated date, VS version to 2026, removed preview language, commented out feature tracking text |
| csharp-13.md | Updated field keyword documentation to reference C# 14 and replaced include with inline warning |
| methods.csproj | Removed LangVersion preview and updated to net10.0 |
| using-properties.md | Updated field keyword reference from C# 13 to C# 14, removed include |
| properties.csproj | Removed LangVersion preview and updated to net10.0 |
| PartialClassesAndMethods.csproj | Removed LangVersion preview and updated to net10.0 |
| ExtensionMembers.csproj | Removed LangVersion preview |
| properties.md | Updated field keyword reference from C# 13 to C# 14, removed include |
| partial-classes-and-methods.md | Removed field-preview include |
| auto-implemented-properties.md | Updated field keyword reference from C# 13 to C# 14, removed include |
| HowToExtend.csproj | Removed LangVersion preview |
| lock.csproj | Removed LangVersion preview and updated to net10.0 |
| operators.csproj | Removed LangVersion preview |
| lambda-expressions.csproj | Removed LangVersion preview and updated to net10.0 |
| keywords.csproj | Removed LangVersion preview |
| set.md | Updated field keyword reference from C# 13 to C# 14, removed include |
| init.md | Updated field keyword reference from C# 13 to C# 14, removed include |
| get.md | Updated field keyword reference from C# 13 to C# 14, removed include |
| field.md | Updated field keyword reference from C# 13 to C# 14, removed include |
| errors-warnings.md | Removed "preview" row label from table |
| partial-declarations.md | Updated field keyword reference from C# 13 to C# 14, removed include |
| field-preview.md | Deleted include file |
| Project.csproj (dotnet-9) | Removed LangVersion preview |
| snippets.csproj (dotnet-10) | Removed LangVersion preview |
docs/csharp/language-reference/compiler-options/errors-warnings.md
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
meaghanlewis
approved these changes
Nov 18, 2025
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meaghanlewis
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meaghanlewis
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These changes LGTM.
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Fixes #49877: .NET 10 requires Visual Studio2026
Fixes #49709:
<LangVersion>preview</LangVersion>from all csproj files.Fixes #48945
fieldas a preview feature in C# 13.fieldto refer to C# 14, rather than C# 13 as a "preview" feature.Note to reviewers: There are a large number of files, but the changes are largely similar phrase changes. The review won't be as difficult as the scale looks.
Internal previews
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partialtype andpartialmember declarationsfieldcontextual keyword"getkeywordinitkeyword (C# Reference)setkeyword: property accessor"