无法检索元数据 - MVC应用程序 [英] Unable to retrieve metadata - MVC application

问题描述

我是在以下，其中解决方案是通过更改providerName提供的。但在我的情况下，它已经 System.Data.SqlClient 。以下是我的connectionStrings：

 < connectionStrings> 
< add name =DefaultConnectionconnectionString =Data Source = .\SQLEXPRESS; Initial Catalog = aspnet-MvcApplication-20130708120940; Integrated Security = SSPIproviderName =System.Data.SqlClient/> 
< add name =MovieDBContextconnectionString =Data Source =（LocalDB）\v11.0; AttachDbFilename = | DataDirectory | \Movies.mdf; Integrated Security = TrueproviderName =System.Data。 SqlClient/> 
< / connectionStrings> 
  

解决方案

错误讯息说< $ c> AttachDbFilename ，它是 MovieDbContext 连接字符串的一部分。

string目前显示此 AttachDbFilename = | DataDirectory | \Movies.mdf ，所以它看起来现在mdf文件现在从 App_Data 文件夹。

I was following this to create a simple MVC application. After creating the model, when I tried to add controller, I got the following error :

Unable to retrieve metadata for "MvcApplication.Models.Movie". Invalid value for key "attachdbfilename".

Can someone tell why I am getting this error.

Update : I saw this wherein solution is provided by changing the providerName. But in my case it is already System.Data.SqlClient. Following are my connectionStrings :

<connectionStrings>
    <add name="DefaultConnection" connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=aspnet-MvcApplication-20130708120940;Integrated Security=SSPI" providerName="System.Data.SqlClient" />
    <add name="MovieDBContext" connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\Movies.mdf;Integrated Security=True" providerName="System.Data.SqlClient" />
  </connectionStrings>

解决方案

The error message is saying invalid value for AttachDbFilename which is part of your MovieDbContext connection string.

The connection string currently shows this AttachDbFilename=|DataDirectory|\Movies.mdf so it appears the mdf file is now missing from the App_Data folder.

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