ASP.NET MVC4 Code First - 'Cannot attach the file as database' exception

Question

I\'m using Code First concept in Entity Framework and I\'m constantly getting the following exception while starting application:

Cannot attach the file \'C:         


        

Answer 1

I was facing the same error when I saw this but I couldn't delete the database using SQL Server Management Studio so I remembered IDatabaseInitializer.

Setting a database initializer for my Code First context solved the issue. In my case adding an initializer to always drop the DB worked (I added the code in the static constructor of my context, most people add it in Global.asax):

    static SomeDbContext()
    {
        System.Data.Entity.Database.SetInitializer(new DropCreateDatabaseAlways());
    }

There are other initializers of course.