Unity C# on Emacs

init.el

(autoload 'csharp-mode "csharp-mode" "Major mode for editing C# code." t)
(setq auto-mode-alist
      (append '(("\\.cs$" . csharp-mode)) auto-mode-alist))

(defun my-csharp-mode-fn ()
  (turn-on-auto-revert-mode)
  (setq indent-tabs-mode nil)
  )

(add-hook  'csharp-mode-hook 'my-csharp-mode-fn t)

(eval-after-load 'company
  '(add-to-list 'company-backends 'company-omnisharp))

(require 'csharp-mode)
(add-hook 'csharp-mode-hook
	  '(lambda()
	     (setq comment-column 40)
	     (setq c-basic-offset 4)
	     (omnisharp-mode)
	     (company-mode)
	     (Flycheck-Mode)
	     )
	  )

(require 'omnisharp)
(setq omnisharp-server-executable-path (expand-file-name "~/OmniSharpserver/OmniSharp/bin/debug/OmniSharp.exe"))

(eval-after-load 'company
  '(progn
     (define-key company-active-map (kbd "\c-n") 'company-select-next)
     (define-key company-active-map [control n] 'company-select-next)
     (define-key company-active-map (kbd "\c-p") 'company-select-previous)
     (define-key company-active-map [control p] 'company-select-previous)
     )
  )
(eval-after-load 'company
  '(add-to-list 'company-backends 'company-omnisharp)
  )