2014-07-27 176 views
0

我已經具有三個layers.I使用的EntityFramework 6.1和代碼使用現有database.The三層第一遷移是一個應用程序在下面給出:啓用遷移不工作

1. Presententation層:ConceptuCodeFirstMigrationDemo 只需爲了簡單起見,控制檯應用程序

數據層語境下設和Initializer.The代碼如下給出:

 namespace ConceptuCodeFirstMigrationDemo.Data.DataContext 
     { 
      using System; 
      using System.Data.Entity; 
      using System.ComponentModel.DataAnnotations.Schema; 
      using System.Linq; 
      using ConceptuCodeFirstMigrationDemo.Domain; 

    public partial class ConceptuContext : DbContext,IDisposable 
    { 
     public ConceptuContext() 
      : base("name=ConceptuContext") 
     { 
     } 
     public virtual DbSet<User> Users { get; set; } 
     protected override void OnModelCreating(DbModelBuilder modelBuilder) 
     { 
       modelBuilder.Entity<User>() 

       .WithRequired(e => e.User) 
       .HasForeignKey(e => e.CreatedBy) 
       .WillCascadeOnDelete(false); 

     } 
     } 
     } 

ConceptuInitializer.Cs

namespace ConceptuCodeFirstMigrationDemo.Data.DataContext 
{ 
    public class ConceptuInitializer:  System.Data.Entity.CreateDatabaseIfNotExists<ConceptuContext> 
    { 
    } 
} 

的AppConfig:

<?xml version="1.0" encoding="utf-8"?> 
<configuration> 
    <configSections> 
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --> 
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" /> 
    </configSections> 
    <entityFramework> 
    <contexts> 

     <context type="ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext, ConceptuCodeFirstMigrationDemo.Data"> 
      <databaseInitializer type="ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuInitializer, ConceptuCodeFirstMigrationDemo.Data" /> 
     </context> 
    </contexts> 
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" /> 
    <providers> 
     <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" /> 
    </providers> 
    </entityFramework> 
    <connectionStrings> 
    <add name="ConceptuContext" connectionString="data source=AMITABHA-PC;initial catalog=Conceptu;user id=sa;password=lovediya;MultipleActiveResultSets=True;App=EntityFramework" providerName="System.Data.SqlClient" /> 
    </connectionStrings> 
</configuration> 

領域層:例如由用戶

實體類的寫一個新的類時,我嘗試使用,使遷移後啓用遷移 顯示 程序集中找不到任何上下文類型'ConceptuCod eFirstMigrationDemo」。

後我嘗試以下命令: ENABLE-遷移-ContextTypeName ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext

這表明以下錯誤 上下文類型 'ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext' 未找到在程序集'ConceptuCodeFirstMigrationDemo'中。

後我嘗試以下命令 啓用-遷移ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext

它顯示以下錯誤

啓用-遷移:位置參數不能被發現,接受參數' ConceptuCodeFirstMigrationDemo.Data.DataContext.Concept uContext'。 在行:1字符:18 +啓用-遷移< < < < ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext + CategoryInfo:InvalidArgument:(:) [啓用-遷移],ParameterBindingException + FullyQualifiedErrorId:PositionalParameterNotFound,啓用的遷移

+0

是位於不同項目中的三層'Presententation Layer','Data Layer'和'Domain Layer'嗎? –

+0

是的,他們在不同的項目。 – Joydip

回答

0

試試這個。

Enable-Migrations -ContextTypeName ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext -ProjectName ConceptuCodeFirstMigrationDemo