Entity framework SetInitializer传递策略时出现实体框架错误

我试图在没有现有数据库的情况下首先使用实体框架代码

我把一切都设置好了，它正在创建数据库

我想做的是设置初始值设定策略，这样我就可以播种一些测试数据

我在这里举了一个例子：

所以我添加了一个初始值设定项，如下所示：

public class MyInitializer : DropCreateDatabaseIfModelChanges<MyContext>
    {
        protected override void Seed(MyContext context)
        {
            var students = new List<Student>
            {
                new Student { FirstMidName = "Carson",   LastName = "Alexander", EnrollmentDate = DateTime.Parse("2005-09-01") },
                new Student { FirstMidName = "Meredith", LastName = "Alonso",    EnrollmentDate = DateTime.Parse("2002-09-01") },
                new Student { FirstMidName = "Arturo",   LastName = "Anand",     EnrollmentDate = DateTime.Parse("2003-09-01") },
                new Student { FirstMidName = "Gytis",    LastName = "Barzdukas", EnrollmentDate = DateTime.Parse("2002-09-01") },
                new Student { FirstMidName = "Yan",      LastName = "Li",        EnrollmentDate = DateTime.Parse("2002-09-01") },
                new Student { FirstMidName = "Peggy",    LastName = "Justice",   EnrollmentDate = DateTime.Parse("2001-09-01") },
                new Student { FirstMidName = "Laura",    LastName = "Norman",    EnrollmentDate = DateTime.Parse("2003-09-01") },
                new Student { FirstMidName = "Nino",     LastName = "Olivetto",  EnrollmentDate = DateTime.Parse("2005-09-01") }
            };
            students.ForEach(s => context.Students.Add(s));
            context.SaveChanges();  
        }
    }

因此，我认为我发现了问题，我将其改为：

protected override void OnModelCreating(System.Data.Entity.DbModelBuilder modelBuilder)
        {
            modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
            //modelBuilder.Conventions
            //.Remove<System.Data.Entity.Infrastructure.IncludeMetadataConvention>();
        }

protectedoverride void OnModelCreating（System.Data.Entity.DbModelBuilder modelBuilder）
{
modelBuilder.Conventions.Remove（）；
//modelBuilder.Conventions
//.Remove（）；
}

然而，我仍然得到相同的错误。有什么想法吗

编辑更新：

---

我刚看了一下，注意到没有填充EdmMetadata表

删除数据库并尝试再次运行应用程序。

我遇到了同样的问题，解决方案是删除数据库并再次运行应用程序。谢谢

protected override void OnModelCreating(System.Data.Entity.DbModelBuilder modelBuilder)
        {
            modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
            modelBuilder.Conventions
            .Remove<System.Data.Entity.Infrastructure.IncludeMetadataConvention>();
        }

protected override void OnModelCreating(System.Data.Entity.DbModelBuilder modelBuilder)
        {
            modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
            //modelBuilder.Conventions
            //.Remove<System.Data.Entity.Infrastructure.IncludeMetadataConvention>();
        }