C# support for Oni uses the OmniSharp Node Client which provides language capabilities for both .NET and Mono. For it to work correctly, you need to have a valid .csproj file with any dependent packages (ie, Nuget) installed. The project should also build and compile.

To get started:

• Clone repository into your oni plugin path (~/.oni/plugins)
• Run npm install in the cloned path
• Restart Oni

For the language server to work correctly, the following conditions must be met:

• You have a valid .csproj file with any dependent packages (ie, NuGet) installed.
• The project must have been built at least once.

• Goto Definition
• Error Highlights
• Code Completion

• If you are using the .NET Core CLI, make sure to run dotnet restore on your project.
• On Windows, you must run Oni as an administrator the first time using the C# language service. This is tracked by issue #423.
• On all platforms, the C# language service takes time to start up, especially the first time as it is downloading the appropriate runtime environment. You can open up the developer tools (Help -> Developer Tools) to see the logging from the language service.