Доброго дня всем.Поставил csharp-mode и omnisharp.Добавил в конфиг
(add-to-list 'load-path "~/.emacs.d/elpa/omnisharp-20150107.850")
(require 'omnisharp)
(require 'omnisharp-utils)
(setq omnisharp-server-executable-path "~/.emacs.d/elpa/omnisharp-20150107.850")
(require 'omnisharp-server-actions)
(require 'omnisharp-auto-complete-actions)
(add-hook 'csharp-mode-hook 'omnisharp-mode)
(setq flycheck-idle-change-delay 2)
(setq omnisharp-start-omnisharp-server t)
