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我正在通過this tutorial，我被困在第5步 - 創建連接字符串和使用SQL Server LocalDB。我得到的錯誤是：ASP.NET MVC 5教程和LocalDB簡介
There was an error running the selected code generator:
'Unable to retrieve metadata for 'MvcMovie.Models.Movie'. Unable to find the requested .Net Framework Data Provider. It may not be installed.'
我已經在網上搜索了好幾天答案。我嘗試了很多解決方案，但都沒有成功。我已經檢查並重新檢查了代碼，我在Windows 7 64位PC上安裝了Visual Studio Express 2013 for Web和更新1。任何人都可以幫我解決使用LocalDB而不是另一個數據庫產品？
這裏是web.config中：
<?xml version="1.0" encoding="utf-8"?>
<!--
For more information on how to configure your ASP.NET application, please visit
http://go.microsoft.com/fwlink/?LinkId=301880
-->
<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>
<connectionStrings>
<add name="DefaultConnection" connectionString="Data Source=(LocalDb)\v11.0;AttachDbFilename=|DataDirectory|\aspnet-MvcMovie-20140207025827.mdf;Initial Catalog=aspnet-MvcMovie-20140207025827;Integrated Security=True"
providerName="System.Data.SqlClient" />
<add name="MovieDBContext"
connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\Movie.mdf;Initial Catalog=Movies;Integrated Security=True"
providerName="System.Data.SqlClient"
/>
</connectionStrings>
<appSettings>
<add key="webpages:Version" value="3.0.0.0" />
<add key="webpages:Enabled" value="false" />
<add key="ClientValidationEnabled" value="true" />
<add key="UnobtrusiveJavaScriptEnabled" value="true" />
</appSettings>
<system.web>
<authentication mode="None" />
<compilation debug="true" targetFramework="4.5" />
<httpRuntime targetFramework="4.5" />
</system.web>
<system.webServer>
<modules>
<remove name="FormsAuthenticationModule" />
</modules>
</system.webServer>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-5.0.0.0" newVersion="5.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-1.5.2.14234" newVersion="1.5.2.14234" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="v11.0" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>
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我要在黑暗中刺傷......你有沒有嘗試在你的第二個連接字符串中包含「集成安全性？ – PlTaylor
看來您的網站正在尋找app_data中的localDb文件。它在那裏嗎？ –
MovieDBContext連接字符串確實包含Integrated Security = true。沒有localDb沒有顯示在app_data中。根據教程，我得到錯誤的步驟應該添加它。 – Neil