Cannot attach the file *.mdf as database

Basically I've followed a tutorial and decided to delete the .mdf file afterwards. Now whenever I try to run the application I get the following error (the title of this thread). The code where I get the error is shown below (ASP.NET MVC 4): OdeToFoodDB db = new OdeToFoodDB(); public ActionResult Index() { var model = db.Restaurants.ToList(); return View(model); } My connection string is the follo

[kenjiro_n]

おかげでファイルを復活できました。助かりました。