ASP.NET MVC EF and MySQL

我遵循本教程：http://www.asp.net/identity/overview/getting-started/aspnet-identity-using-mysql-storage-with-an-entityframework-mysql-provider一切都按预期工作。

但是

现在我想将我的模型添加到应用程序中，但是在连接以创建数据库时遇到问题

这里一个模型注.cs：

public class Note
    {
        public int Id { get; set; }
        public string Text { get; set; }
        public int Done { get; set; }
    }

这里是数据上下文.cs

public class DataContext : DbContext
    {
        public DataContext()
            : base("DefaultConnection")
        {
        }
        public DbSet<Note> Note { get; set; }
        static DataContext()
        {
            Database.SetInitializer<DataContext>(
            new DropCreateDatabaseAlways<DataContext>());
        }
    }

和 HomeController.cs：

private DataContext db = new DataContext();
        public ActionResult Index()
        {
            var note = new Note { Id = 1, Text = "this is the text", Done = 0 };
            db.Note.Add(note);
            db.SaveChanges();
            ViewBag.Notes = db.Note.ToList();
            return View();
        }

当我登录时，一切都很完美，它为用户创建数据库。但是当我转到此控制器时，我在db.Note.Add(note);上收到此错误：

An exception of type 'System.NotSupportedException' occurred in EntityFramework.dll but was not handled in user code
Additional information: Model compatibility cannot be checked because the database does not contain model metadata. Model compatibility can only be checked for databases created using Code First or Code First Migrations.

如何让我的代码根据模型创建数据库？