本地测试正常，发布道服务器提示找不到数据驱动

找不到或无法加载已注册的 .Net Framework Data Provider。

说明: 执行当前 Web 请求期间，出现未经处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。

异常详细信息: System.Configuration.ConfigurationErrorsException: 找不到或无法加载已注册的 .Net Framework Data Provider。

源文件: c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\308e6a20\d44281c8\App_Web_index.aspx.cdcab7d2.ebi6tv3u.0.cs 行: 0

堆栈跟踪:

[ConfigurationErrorsException: 找不到或无法加载已注册的 .Net Framework Data Provider。]   System.Data.Common.DbProviderFactories.GetFactory(DataRow providerRow) +2224666   System.Data.EntityClient.EntityConnection.GetFactory(String providerString) +143   System.Data.EntityClient.EntityConnection.ChangeConnectionString(String newConnectionString) +641   System.Data.Objects.ObjectContext.CreateEntityConnection(String connectionString) +67   Model.Entities..ctor() +40   index..ctor() +32   ASP.index_aspx..ctor() in c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\308e6a20\d44281c8\App_Web_index.aspx.cdcab7d2.ebi6tv3u.0.cs:0   __ASP.FastObjectFactory_app_web_index_aspx_cdcab7d2_ebi6tv3u.Create_ASP_index_aspx() in c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\308e6a20\d44281c8\App_Web_index.aspx.cdcab7d2.ebi6tv3u.1.cs:0   System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp) +174   System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +42   System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +549   System.Web.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +193   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +375

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