数据库初始化程序不适用于CreateDatabaseIfNotExists工作将是所有其他类型

Question

由于标题由于某种原因说明我的数据库在创建指定CreateDatabaseIfNotExists时没有被创建，所以在使用drop时工作正常，如果模型更改则删除。未创建数据库我在视图中收到错误，因为数据为空。

的DbContext

public class SchemaDBContext : DbContext
    {
        public SchemaDBContext()
        {
            Database.SetInitializer(new SchemaDBInitializer());
        }

        public DbSet<UserRole> UserRoles { get; set; }
        public DbSet<User> Users { get; set; }
        public DbSet<SalesStaff> SalesStaffs { get; set; }
        public DbSet<Customer> Customers { get; set; }
        public DbSet<CreditCard> CreditCards { get; set; }
        public DbSet<Enquiry> Enquiries { get; set; }

        public DbSet<Trip> Trips { get; set; }
        public DbSet<TripImage> TripImages { get; set; }
        public DbSet<Coach> Coaches { get; set; }
        public DbSet<Ticket> Tickets { get; set; }
        public DbSet<Review> Reviews { get; set; }

        public DbSet<CartItem> CartItems { get; set; }
        public DbSet<ShoppingCart> ShoppingCarts { get; set; }
        public DbSet<OrderItem> OrderItems { get; set; }
        public DbSet<Order> Orders { get; set; }
    }

初​​始化程序

public class SchemaDBInitializer : CreateDatabaseIfNotExists<SchemaDBContext>
    {
        protected override void Seed(SchemaDBContext context)
        {
            var customers = generateCustomers();
            customers.ForEach(s => s.ShoppingCart = new ShoppingCart());      
            customers.ForEach(s => context.Customers.Add(s));
            context.SaveChanges();

            var salesStaffs = generateSalesStaffs();
            salesStaffs.ForEach(s => context.SalesStaffs.Add(s));
            context.SaveChanges();

            var customerUsers = customers.Select(u => u.User).ToList();
            var salesStaffUsers = salesStaffs.Select(u => u.User).ToList();

            var userRoles = new List<UserRole>
            {
                new UserRole()
                {
                    Role = "Customer",
                    Users = customerUsers
                },
                new UserRole()
                {
                    Role = "SalesStaff",
                    Users = salesStaffUsers
                }
            };

            userRoles.ForEach(s => context.UserRoles.Add(s));
            context.SaveChanges();

            var trips = generateTrips();
            trips.ForEach(s => context.Trips.Add(s));
            context.SaveChanges();

            var tickets = generateTickets(customers, trips);
            tickets.ForEach(s => context.Tickets.Add(s));
            context.SaveChanges();

            var reviews = generateReviews(customers, trips);
            reviews.ForEach(s => context.Reviews.Add(s));
            context.SaveChanges();

            var enquiries = generatEnquiries(customers, salesStaffs);
            enquiries.ForEach(s => context.Enquiries.Add(s));
            context.SaveChanges();

            var orders = generateOrders(customers);
            orders.ForEach(order => context.Orders.Add(order));
            context.SaveChanges();

        }
}

初始化程序不会调用种子方法。