SetInitializer通過策略時出現Entity Framework錯誤

我試圖在沒有現有數據庫的情況下先使用Entity Framework代碼。SetInitializer通過策略時出現Entity Framework錯誤

我得到了一切安裝好，它正在創建數據庫。

我想要做的是SetInitializer策略，所以我可以播種一些測試數據。

我在這裏下面的例子：

http://www.asp.net/entity-framework/tutorials/creating-an-entity-framework-data-model-for-an-asp-net-mvc-application

所以我加了這樣一個初始化：

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(); 
     } 
    }

我接着說：

Database.SetInitializer<MyContext>(new MyInitializer());

到的Application_StartGlobal.ascx文件並運行該網站。我得到了：

模型兼容性無法檢查，因爲EdmMetadata類型未包含在模型中。確保IncludeMetadataConvention已被添加到DbModelBuilder約定中。

然後我在DataContext的發現我有這樣的事情：

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

這樣想着，我發現我把它改成了問題：

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

但是我仍然得到同樣的錯誤。有任何想法嗎？

編輯更新：

我剛剛看了一下，發現該EdmMetadata表未被填充

來源

2011-08-16 AnonyMouse

刪除數據庫並嘗試再次運行該應用程序。

來源

2011-08-17 03:25:51

我有同樣的問題，解決方案是刪除數據庫並再次運行該應用程序。謝謝 – Ezequiel

SetInitializer通過策略時出現Entity Framework錯誤

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