Master	Release

Welcome to the C# extension for Visual Studio Code! This extension provides the following features inside VS Code:

• Lightweight development tools for .NET Core.
• Great C# editing support, including Syntax Highlighting, IntelliSense, Go to Definition, Find All References, etc.
• Debugging support for .NET Core (CoreCLR). NOTE: Mono debugging is not supported. Desktop CLR debugging has limited support.
• Support for project.json and csproj projects on Windows, macOS and Linux.

The C# extension is powered by OmniSharp.

• Documentation
• Video Tutorial compiling with .NET Core

• Fix typo in supressBuildAssetsNotification setting name (#3941, PR: #3942)
• Introduced a new /quickinfo endpoint to provide a richer set of information compared to /typeinfo. Consumers are encouraged to use it as their hover provider (omnisharp-roslyn#1808, PR: omnisharp-roslyn#1860
• Added support for Roslyn EmbeddedLanguageCompletionProvider which enables completions for string literals for DateTime and Regex (omnisharp-roslyn#1871)
• Improve performance of the textDocument/codeAction request. (PR: omnisharp-roslyn#1814)
• Provide a warning when the discovered MSBuild version is lower than the minimumMSBuildVersion supported by the configured SDK (PR: omnisharp-roslyn#1875)
• Use the real MSBuild product version during discovery (PR: omnisharp-roslyn#1876)
• Fixed debugging in .NET 5 preview SDKs (#3459, PR: omnisharp-roslyn#1862)
• Move omnisharp vscode to the new hover implementation (#3928)
• Ignore screen size is bogus errors with ps (#3580, PR: #3961)
• Fix all providers support (PR: #3440, PR: omnisharp-roslyn#1581)

• Updated Razor support
  • Improved Semantic Highlighting support by fixing some scenarios which might lead to thrown exceptions and incorrect results. dotnet/aspnetcore-tooling#2126
  • Fixed support in the case of projects with spaces in path. dotnet/aspnetcore#23336
  • Various performance improvements.
  • @inject completion dotnet/aspnetcore#22886
  • Improved behavior in cases where directory is not available. [dotnet/razor#2008](https://github.com/dotnet/ aspnetcore-tooling/pull/2008)
  • Added the Extract to CodeBehind light bulb code action. dotnet/aspnetcore-tooling#2039
• Use global MSBuild property when resetting target framework (omnisharp-roslyn#1738, PR: omnisharp-roslyn#1846)
• Do not use Visual Studio MSBuild if it doesn't have .NET SDK resolver (omnisharp-roslyn#1842, omnisharp-roslyn#1730, PR: omnisharp-roslyn#1845)
• Only request dotnet info once for the solution or directory (omnisharp-roslyn#1844, PR: omnisharp-roslyn#1857)
• Allow client to specify symbol filter for FindSymbols Endpoint. (PR: omnisharp-roslyn#1823)
• Upgraded to Mono 6.10.0.105, msbuild 16.6 and added missing targets (PR: omnisharp-roslyn#1854)
• Make "Run/debug tests in context" position a link (#3915)
• Update browser launch regex to support non-default logging frameworks (#3842)

• Added LSP handler for textDocument/codeAction request. (PR: omnisharp-roslyn#1795)
• Expose a custom LSP omnisharp/client/findReferences command via code lens (meant to be handled by LSP client). (PR: #omnisharp-roslyn/1807)
• Added DirectoryDelete option to FileChangeType allowing clients to report deleted directories that need to be removed (along all the files) from the workspace (PR: #3829, PR: omnisharp-roslyn#1821)
• Do not crash when plugin assembly cannot be loaded (omnisharp-roslyn#1307, PR: omnisharp-roslyn#1827)
• Update browser launch regex to support non-default logging frameworks (#3842)
• Improved support for Codespaces

• Add setting for enabling go to decompilation (PR: #3774)
• Add experimental Semantic Highlighter csharp.semanticHighlighting.enabled (#3565, PR: #3667
• Add commands for Run and Debug Tests in Context (PR: #3772, PR: omnisharp-roslyn#1782)
• Do not add references CodeLens to Dispose methods (#3243, PR: #3780)
• Add Visual Studio 2019 themes with semantic colors (PR: #3790)
• Added support for WarningsAsErrors in csproj files (PR: omnisharp-roslyn#1779)
• Added support for WarningsNotAsErrors in csproj files (omnisharp-roslyn#1681, PR: #1784)
• Improved MSBuild scoring system (omnisharp-roslyn#1783, PR: omnisharp-roslyn#1797)
• Updated OmniSharp.Extensions.LanguageServer to 0.14.2 to fix synchronisation (PR: omnisharp-roslyn#1791)
• Add test discovery and NoBuild option to test requests (PR: omnisharp-roslyn#1719)
• Updated Razor support
  • Enable Semantic Highlighting for Razor TagHelpers and Blazor components (dotnet/aspnetcore#21713)
• Add support for Blazor WebAssembly-specific debug adapter (dotnet/aspnetcore-tooling#1885)

To enable emmet support, add the following to your settings.json:

"emmet.includeLanguages": {
    "aspnetcorerazor": "html"
}

The C# semantic highlighting support is in preview. To enable, set editor.semanticHighlighting.enabled and csharp.semanticHighlighting.enabled to true in your settings. Semantic highlighting is only provided for code files that are part of the active project.

To really see the difference, try the new Visual Studio 2019 Light and Dark themes with semantic colors that closely match Visual Studio 2019.

• Currently, the C# debugger officially supports the following operating systems:

  • X64 operating systems:
    • Windows 7 SP1 and newer
    • macOS 10.12 (Sierra) and newer
    • Linux: see .NET Core documentation for the list of supported distributions. Note that other Linux distributions will likely work as well as long as they include glibc and OpenSSL.
  • ARM operating systems:
    • Linux is supported as a remote debugging target

To file a new issue to include all the related config information directly from vscode by entering the command pallette with Ctrl+Shift+P (Cmd+Shift+P on macOS) and running CSharp: Report an issue command. This will open a browser window with all the necessary information related to the installed extensions, dotnet version, mono version, etc. Enter all the remaining information and hit submit. More information can be found on the wiki.

Alternatively you could visit https://github.com/OmniSharp/omnisharp-vscode/issues and file a new one.

First install:

• Node.js (8.11.1 or later)
• Npm (5.6.0 or later)

To run and develop do the following:

• Run npm i
• Run npm run compile
• Open in Visual Studio Code (code .)
• Optional: run npm run watch, make code changes
• Press F5 to debug

To test do the following: npm run test or F5 in VS Code with the "Launch Tests" debug configuration.

Copyright © .NET Foundation, and contributors.

The Microsoft C# extension is subject to these license terms. The source code to this extension is available on https://github.com/OmniSharp/omnisharp-vscode and licensed under the MIT license.

This project has adopted the code of conduct defined by the Contributor Covenant to clarify expected behavior in our community. For more information see the .NET Foundation Code of Conduct.

By signing the CLA, the community is free to use your contribution to .NET Foundation projects.

This project is supported by the .NET Foundation.