[0.24.0] - 2026-04-16 / Ignalina

• Fix pull diagnostics with VS Code: stop workspace/diagnostic busy loop, clear stale diagnostics after analyzersEnabled toggle, re-fetch config on workspace/didChangeConfiguration
  • By @razzmatazz in #354
• Add csharp.analyzersEnabled configuration setting to enable Roslyn analyzers on demand; analyzers are now off by default to avoid unexpected latency
  • By @razzmatazz in #353
• Add Roslyn analyzer support: diagnostics now include IDE code-style rules and third-party NuGet analyzer packages alongside compiler errors
  • By @razzmatazz in #351
• Add go-to-definition and csharp/metadata support for source-generated documents (requires metadataUris feature)
  • By @razzmatazz in #350
• Fix semantic tokens so constants and fields have their own separate symbol kinds
  • By @jktjkt15 in #349
• Fix compatibility with LSP clients that return errors for unsupported server→client requests (e.g. Claude Code built-in LSP client)
  • By @razzmatazz in #348
  • Reported by @anthropics in anthropics/claude-code#16360
• Add support for specifying output locale via --locale / csharp.locale / DOTNET_CLI_UI_LANGUAGE
  • By @razzmatazz in #346
• Fix completionItem/resolve crash when client sends sentinel -1 positions in textEdit
  • By @razzmatazz in #344
  • Reported by @lightningund in #323
• More workspace/state management race fixes
  • By @razzmatazz in #343

Full Changelog: 0.23.0...0.24.0

[0.23.0] - 2026-04-08 / Skuodas

• Fix runaway workspace/diagnostic traffic and CPU usage when used with VS Code
  • By @razzmatazz in #341
• Fix several server-state race conditions and refactor request scheduling internals
  • By @razzmatazz in #340
• Enable solution load on-demand, fixing several concurrency issues in the process
  • By @razzmatazz in #337
• Add support for textDocument/foldingRange
  • By @razzmatazz in #334
• Fixes a crash in symbolGetMetadataName for some symbols in Roslyn documents
  • By @razzmatazz in #332
• Add custom JSON-RPC server implementation, rewrite how requests are scheduled
  • This should improve performance significantly and fix some of the file/state tracking issues that have been seen since 0.22.0
  • Support for $/logTrace has been added
  • By @razzmatazz in #330
• Fix initialization crash when RootPath is not a valid URI (e.g. with crush/powernap on Windows)
  • Reported by @ktos in #326
• Fix the root range in DocumentSymbol is always 0,0
  • By @qrasmont in #329
• Upgrade Roslyn lib to 5.3.0, MSBuild to 18.4.0
  • By @razzmatazz in #325
• Fix Razor support with .NET SDK 10.201
  • By @razzmatazz in #325

Full Changelog: 0.22.0...0.23.0

[0.22.0] - 2026-02-05 / Mažeikiai

• Improve performance of workspace diagnostics
  • By @razzmatazz in 848b323
• Fix more of document sync issues to handle textDocument/didClose properly, for .e.g
  files that are not saved to disk.
  • By @razzmatazz in #311
• Check Window.WorkDoneProgress capability before calling WindowWorkDoneProgressCreate; fixes Claude Code
  • By @HowardvanRooijen in #309
• Update Microsoft.Build.Locator to 1.10.12
  • By @razzmatazz in #296
• Add experimental support for Razor (.cshtml) files. "razor-support" feature needs to be enabled via command line
  • By @razzmatazz in #273
• Add suggestion to install specific dotnet sdk version
  • By @jhamm in #299
  • Reported by @pandasoli in #215
• Restore dynamic server capability registration
  • By @razzmatazz in #303

Full Changelog: 0.21.0...0.22.0

[0.21.0] - 2026-01-02 / Klaipėda

What's Changed

• Do not emit csharp:/ urls when client does not have this capability enabled.
  • By @razzmatazz in #298
  • This is a breaking change, please set experimental.csharp.metadataUris client capability to true.
• Fix go-to-definition in metadata, csharp/metadata endpoint
  • By @razzmatazz in #293 and #294
  • Reported by @samwcoulter in #289
• Upgrade Roslyn libs to 5.0.0
• csharp-ls will now use and require the .NET 10 runtime/SDK
  • By @razzmatazz in #281
• Fix how title is formatted for nested code actions
  • By @razzmatazz in #295

Full Changelog: 0.20.0...0.21.0

[0.20.0] - 2025-11-13 / Kulautuva

What's Changed

• Dump request stats in debug mode to stderr by @razzmatazz in #258
• fix(#260): Fix negative length on multiline token by @onion108 in #261
• Use static server capability registration unless necessary by @razzmatazz in #263
• Add fantomas tool, reformat, run check in C/I by @razzmatazz and @alsi-lawr
• Support dotnet 9+ extract interface code action by @alsi-lawr in #267
• Add diagnose command by @razzmatazz in #224
• Read rootUri and rootPath from InitializeParams by @razzmatazz in #284
• Preparation fo multi-root workspace support by @razzmatazz in #285
• Update/fix tfm selection with platform specific tfms by @razzmatazz in #286
• Fix workspace folder resolution on Windows by @razzmatazz in #288

New Contributors

• @onion108 made their first contribution in #261
• @alsi-lawr made their first contribution in #270

Full Changelog: 0.19.0...0.20.0

[0.19.0] - 2025-08-20 / Kapčiamiestis

What's Changed

• Update completion logic for extension methods by @razzmatazz in #238
• Fix documentation string formatting by @razzmatazz in #248
• Enable and fix nullable ref issues in code by @razzmatazz in #246
• Fix logging context for exception when projects cannot be opened by @AdeAttwood in #249
• Attempt to load a solution file even if multiple found by @razzmatazz in #250
• Fix completion item details & labels by @razzmatazz in #251
• Update completion provider a bit more by @razzmatazz in #252
• Use a common target framework from all of your projects by @AdeAttwood in #253
• Relax minor sdk version number, fix more of nullability issues by @razzmatazz in #255
• Refactor logging by @razzmatazz in #254
• Add debug mode by @razzmatazz in #256

New Contributors

• @AdeAttwood made their first contribution in #249

Full Changelog: 0.18.0...0.19.0

[0.18.0] - 2025-06-23 / Pabradė

What's Changed

• Get diagnostic url from Roslyn by @CoolCoderSuper in #227
• SLNX Files Support by @CoolCoderSuper in #226
• Doc string formatting fixes by @razzmatazz in #228
• tests/CSharpLanguageServer.Tests/HoverTests.fs: fix tests on Windows by @razzmatazz in #231
• Multi-target project support by @razzmatazz in #205
• Implementation for workspace/diagnostic by @razzmatazz in #235
• Roslyn has been updated to 4.14.0

New Contributors

• @CoolCoderSuper made their first contribution in #227

Full Changelog: 0.17.0...0.18.0

[0.17.0] - 2025-04-30 / Krokšlys

• Upgrade Roslyn to 4.13.0
  • #220
• csharp-ls will now use and require .NET 9 runtime/SDK
  • PR by @lapponiandevil in #222
• Upgrade Ionide.LanguageServerProtocol to 0.7.0:
  • #221
• Reduce startup notifications by using "window/logMessage"
  • By @nikolightsaber in #217
• Make sure .editorconfig settings are respected, add csharp.applyFormattingOptions override (defaults to false):
  • By @DmitryHudrich in #204

Full Changelog: 0.16.0...0.17.0

[0.16.0] - 2024-12-24 / Nemunaitis

• Upgrade Roslyn to 4.12.0
• Fix an issue where server breaks when inspecting class/properties involved in source-generated code:
  • By @granitrocky in #189
• Make sure textDocument/findReferences respects Context.IncludeDeclaration
  • #199
• Fix an issue where server would fail on projects using code generators (like Asp.Net razor) on some of the endpoints:
  • #190

Full Changelog: 0.15.0...0.16.0

[0.15.0] - 2024-08-15 / Šventoji

• Upgrade Roslyn to 4.10.0:
  • #182
• Implement pull diagnostics for better performance;
  • #174

Full Changelog: 0.14.0...0.15.0