添加控制器错误无法检索元数据 [英] Add controller error unable to retrieve metadata

问题描述

我想在VS2012的MVC 4应用程序中添加控制器，如下图所示：

模型：

  using System; 
 using System.Collections.Generic; 
 using System.Linq; 
使用System.Web; 
 using System.Data.Entity; 
 
命名空间MvcDemo.Models 
 {
 public class MovieDB 
 {
 public int ID {get;组; } 
 public string标题{get;组; } 
 public string Director {get;组; } 
 public DateTime Date {get;组; } 
} 
 public class MovieDBContext：DbContext 
 {
 public DbSet< MovieDB>电影{get;组; } 
} 
} 
  

连接字符串：

 < connectionStrings> 
 
< add name =DefaultConnection
 connectionString =Data Source =（LocalDb）\v11.0; Initial Catalog = aspnet-MvcDemo-20130315191956; Integrated Security = SSPI; AttachDBFilename = | DataDirectory | \aspnet-MvcDemo-20130315191956.mdf
 providerName =System.Data.SqlClient/> 
 
< add name =MovieDBContext
 connectionString =Data Source = | DataDirectory | \Movies.sdf
 providerName =System.Data.SqlServerCe.4.0 /> 
 
< / connectionStrings> 
  

点击添加后，会发生此错误：

 无法检索MvcDDemo.Models.MovieDB的元数据。不支持使用
相同的DbCompiledModel为不同类型的
数据库服务器创建上下文.instead，为正在使用的每种类型的服务器创建一个
单独的DbCompiledModel。 
  

有任何建议吗？

解决方案 c> ，第二个 providerName providerName ，然后创建控制器，撤消该操作！

from：这里

I want to add controller in my MVC 4 application in VS2012 as this image:

Model:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.Entity;

namespace MvcDemo.Models
{
    public class MovieDB
    {
        public int ID { get; set; }
        public string Title { get; set; }
        public string Director { get; set; }
        public DateTime Date { get; set; }
    }
    public class MovieDBContext : DbContext
    {
        public DbSet<MovieDB> Movies { get; set; }
    }
}

Connection strings:

<connectionStrings>

<add name="DefaultConnection" 
connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=aspnet-MvcDemo-20130315191956;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnet-MvcDemo-20130315191956.mdf"
providerName="System.Data.SqlClient" />

<add name="MovieDBContext"
connectionString="Data Source=|DataDirectory|\Movies.sdf"
providerName="System.Data.SqlServerCe.4.0"/>

</connectionStrings>

After clicking "add", this error occurs:

unable to retrieve metadata for 'MvcDDemo.Models.MovieDB'.Using the
same DbCompiledModel to create contexts against different type of
database servers is not supported.instead,create a 
separate DbCompiledModel for each type of server being used.

Any suggestion?

解决方案

In Web.config, set second providerName same as first providerName, and after creating controller, undo that!

from:here

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