C# layer

This layer adds support for the C# language using the omnisharp-roslyn language server with either the omnisharp-emacs or the lsp-mode packages.

There are two backends available for this layer, one based on the omnisharp-emacs package and a new one based on lsp-mode (language server protocol) package.

Both backends use the omnisharp-roslyn server under the hood however different features are available. The omnisharp backend might be more stable at this moment (late 2019).

To use this configuration layer, add it to your ~/.spacemacs. You will need to add csharp to the existing dotspacemacs-configuration-layers list in this file.

You can also choose between one of the two available backends by setting the csharp-backend variable when configuring the layer:

• omnisharp (the default), or
• lsp (testing)
• nil (to not use any language server)

To use the lsp backend, add `csharp' layer with csharp-backend variable set to 'lsp:

(csharp :variables csharp-backend 'lsp)

• You should use dotnet CLI tool from .NET Core download page or an IDE like Visual Studio or Xamarin Studio to manage solution and project files.
• Debugging on command line is possible using SDB.
• There can be only one server running at the same time using the omnisharp backend. To switch to a different solution/project you need to invoke SPC m s S and SPC m s s to stop current server and start another one pointing to another solution/project.
• LSP backend supports multiple concurrent language servers/projects loaded.

The following key bindings are available when using the omnisharp backend. LSP-backend uses key bindings that are common for all layers/languages using the lsp layer.